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===============================
Answer CAPTCHA from server's IP
===============================
With a SSH tunnel we can send requests from server's IP and solve a CAPTCHA that
blocks requests from this IP. If your SearXNG instance is hosted at
``example.org`` and your login is ``user`` you can setup a proxy simply by
:man:`ssh`:
.. code:: bash
# SOCKS server: socks://127.0.0.1:8080
$ ssh -q -N -D 8080 user@example.org
The ``socks://localhost:8080`` from above can be tested by:
.. tabs::
.. group-tab:: server's IP
.. code:: bash
$ curl -x socks://127.0.0.1:8080 http://ipecho.net/plain
n.n.n.n
.. group-tab:: desktop's IP
.. code:: bash
$ curl http://ipecho.net/plain
x.x.x.x
In the settings of the WEB browser open the *"Network Settings"* and setup a
proxy on ``SOCKS5 127.0.0.1:8080`` (see screenshot below). In the WEB browser
check the IP from the server is used:
- http://ipecho.net/plain
Now open the search engine that blocks requests from your server's IP. If you
have `issues with the qwant engine
<https://github.com/searxng/searxng/issues/2011#issuecomment-1553317619>`__,
solve the CAPTCHA from `qwant.com <https://www.qwant.com/>`__.
-----
.. tabs::
.. group-tab:: Firefox
.. kernel-figure:: answer-captcha/ffox-setting-proxy-socks.png
:alt: FFox proxy on SOCKS5, 127.0.0.1:8080
Firefox's network settings
.. admonition:: :man:`ssh` manual:
-D [bind_address:]port
Specifies a local “dynamic” application-level port forwarding. This works
by allocating a socket to listen to port on the local side .. Whenever a
connection is made to this port, the connection is forwarded over the
secure channel, and the application protocol is then used to determine
where to connect to from the remote machine .. ssh will act as a SOCKS
server ..
-N
Do not execute a remote command. This is useful for just forwarding ports.

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.. _adminapi:
==================
Administration API
==================
Get configuration data
======================
.. code:: http
GET /config HTTP/1.1
Sample response
---------------
.. code:: json
{
"autocomplete": "",
"categories": [
"map",
"it",
"images",
],
"default_locale": "",
"default_theme": "simple",
"engines": [
{
"categories": [
"map"
],
"enabled": true,
"name": "openstreetmap",
"shortcut": "osm"
},
{
"categories": [
"it"
],
"enabled": true,
"name": "arch linux wiki",
"shortcut": "al"
},
{
"categories": [
"images"
],
"enabled": true,
"name": "google images",
"shortcut": "goi"
},
{
"categories": [
"it"
],
"enabled": false,
"name": "bitbucket",
"shortcut": "bb"
},
],
"instance_name": "searx",
"locales": {
"de": "Deutsch (German)",
"en": "English",
"eo": "Esperanto (Esperanto)",
},
"plugins": [
{
"enabled": true,
"name": "HTTPS rewrite"
}
],
"safe_search": 0
}
Embed search bar
================
The search bar can be embedded into websites. Just paste the example into the
HTML of the site. URL of the SearXNG instance and values are customizable.
.. code:: html
<form method="post" action="https://example.org/">
<!-- search --> <input type="text" name="q" />
<!-- categories --> <input type="hidden" name="categories" value="general,social media" />
<!-- language --> <input type="hidden" name="lang" value="all" />
<!-- locale --> <input type="hidden" name="locale" value="en" />
<!-- date filter --> <input type="hidden" name="time_range" value="month" />
</form>

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.. _architecture:
============
Architecture
============
.. sidebar:: Further reading
- Reverse Proxy: :ref:`Apache <apache searxng site>` & :ref:`nginx <nginx
searxng site>`
- uWSGI: :ref:`searxng uwsgi`
- SearXNG: :ref:`installation basic`
Herein you will find some hints and suggestions about typical architectures of
SearXNG infrastructures.
.. _architecture uWSGI:
uWSGI Setup
===========
We start with a *reference* setup for public SearXNG instances which can be build
up and maintained by the scripts from our :ref:`toolboxing`.
.. _arch public:
.. kernel-figure:: arch_public.dot
:alt: arch_public.dot
Reference architecture of a public SearXNG setup.
The reference installation activates ``server.limiter``, ``server.image_proxy``
and ``ui.static_use_hash`` (:origin:`/etc/searxng/settings.yml
<utils/templates/etc/searxng/settings.yml>`)
.. literalinclude:: ../../utils/templates/etc/searxng/settings.yml
:language: yaml
:end-before: # preferences:

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.. _buildhosts:
==========
Buildhosts
==========
.. contents::
:depth: 2
:local:
:backlinks: entry
To get best results from build, it's recommend to install additional packages on
build hosts (see :ref:`searxng.sh`).
.. _searxng.sh install buildhost:
Build and Development tools
===========================
To Install tools used by build and development tasks in once:
.. tabs::
.. group-tab:: SearXNG's development tools
.. code:: sh
$ sudo -H ./utils/searxng.sh install buildhost
This will install packages needed by SearXNG:
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START distro-packages
:end-before: END distro-packages
and packages needed to build documentation and run tests:
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START build-packages
:end-before: END build-packages
.. _docs build:
Build docs
==========
.. _Graphviz: https://graphviz.gitlab.io
.. _ImageMagick: https://www.imagemagick.org
.. _XeTeX: https://tug.org/xetex/
.. _dvisvgm: https://dvisvgm.de/
.. sidebar:: Sphinx build needs
- ImageMagick_
- Graphviz_
- XeTeX_
- dvisvgm_
Most of the sphinx requirements are installed from :origin:`setup.py` and the
docs can be build from scratch with ``make docs.html``. For better math and
image processing additional packages are needed. The XeTeX_ needed not only for
PDF creation, it's also needed for :ref:`math` when HTML output is build.
To be able to do :ref:`sphinx:math-support` without CDNs, the math are rendered
as images (``sphinx.ext.imgmath`` extension).
Here is the extract from the :origin:`docs/conf.py` file, setting math renderer
to ``imgmath``:
.. literalinclude:: ../conf.py
:language: python
:start-after: # sphinx.ext.imgmath setup
:end-before: # sphinx.ext.imgmath setup END
If your docs build (``make docs.html``) shows warnings like this::
WARNING: dot(1) not found, for better output quality install \
graphviz from https://www.graphviz.org
..
WARNING: LaTeX command 'latex' cannot be run (needed for math \
display), check the imgmath_latex setting
you need to install additional packages on your build host, to get better HTML
output (:ref:`install buildhost <searxng.sh install buildhost>`).
.. tabs::
.. group-tab:: Ubuntu / debian
.. code-block:: sh
$ sudo apt install graphviz imagemagick texlive-xetex librsvg2-bin
.. group-tab:: Arch Linux
.. code-block:: sh
$ sudo pacman -S graphviz imagemagick texlive-bin extra/librsvg
.. group-tab:: Fedora / RHEL
.. code-block:: sh
$ sudo dnf install graphviz graphviz-gd ImageMagick texlive-xetex-bin librsvg2-tools
For PDF output you also need:
.. tabs::
.. group-tab:: Ubuntu / debian
.. code:: sh
$ sudo apt texlive-latex-recommended texlive-extra-utils ttf-dejavu
.. group-tab:: Arch Linux
.. code:: sh
$ sudo pacman -S texlive-core texlive-latexextra ttf-dejavu
.. group-tab:: Fedora / RHEL
.. code:: sh
$ sudo dnf install \
texlive-collection-fontsrecommended texlive-collection-latex \
dejavu-sans-fonts dejavu-serif-fonts dejavu-sans-mono-fonts
.. _sh lint:
Lint shell scripts
==================
.. _ShellCheck: https://github.com/koalaman/shellcheck
To lint shell scripts we use ShellCheck_ - a shell script static analysis tool
(:ref:`install buildhost <searxng.sh install buildhost>`).
.. SNIP sh lint requirements
.. tabs::
.. group-tab:: Ubuntu / debian
.. code-block:: sh
$ sudo apt install shellcheck
.. group-tab:: Arch Linux
.. code-block:: sh
$ sudo pacman -S shellcheck
.. group-tab:: Fedora / RHEL
.. code-block:: sh
$ sudo dnf install ShellCheck
.. SNAP sh lint requirements

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===========================
Administrator documentation
===========================
.. toctree::
:maxdepth: 2
settings/index
installation
installation-docker
installation-scripts
installation-searxng
installation-uwsgi
installation-nginx
installation-apache
update-searxng
answer-captcha
searx.limiter
api
architecture
plugins
buildhosts

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.. _installation apache:
======
Apache
======
.. _Apache: https://httpd.apache.org/
.. _Apache Debian:
https://cwiki.apache.org/confluence/display/HTTPD/DistrosDefaultLayout#DistrosDefaultLayout-Debian,Ubuntu(Apachehttpd2.x):
.. _apache2.README.Debian:
https://salsa.debian.org/apache-team/apache2/raw/master/debian/apache2.README.Debian
.. _Apache Arch Linux:
https://wiki.archlinux.org/index.php/Apache_HTTP_Server
.. _Apache Fedora:
https://docs.fedoraproject.org/en-US/quick-docs/getting-started-with-apache-http-server/index.html
.. _Apache directives:
https://httpd.apache.org/docs/trunk/mod/directives.html
.. _Getting Started:
https://httpd.apache.org/docs/current/en/getting-started.html
.. _Terms Used to Describe Directives:
https://httpd.apache.org/docs/current/en/mod/directive-dict.html
.. _Configuration Files:
https://httpd.apache.org/docs/current/en/configuring.html
.. _ProxyPreserveHost: https://httpd.apache.org/docs/trunk/mod/mod_proxy.html#proxypreservehost
.. _LoadModule:
https://httpd.apache.org/docs/mod/mod_so.html#loadmodule
.. _IncludeOptional:
https://httpd.apache.org/docs/mod/core.html#includeoptional
.. _DocumentRoot:
https://httpd.apache.org/docs/trunk/mod/core.html#documentroot
.. _Location:
https://httpd.apache.org/docs/trunk/mod/core.html#location
.. _uWSGI Apache support:
https://uwsgi-docs.readthedocs.io/en/latest/Apache.html
.. _mod_proxy_uwsgi:
https://uwsgi-docs.readthedocs.io/en/latest/Apache.html#mod-proxy-uwsgi
.. _mod_proxy_http:
https://httpd.apache.org/docs/current/mod/mod_proxy_http.html
.. _mod_proxy:
https://httpd.apache.org/docs/current/mod/mod_proxy.html
This section explains how to set up a SearXNG instance using the HTTP server Apache_.
If you did use the :ref:`installation scripts` and do not have any special preferences
you can install the :ref:`SearXNG site <apache searxng site>` using
:ref:`searxng.sh <searxng.sh overview>`:
.. code:: bash
$ sudo -H ./utils/searxng.sh install apache
If you have special interests or problems with setting up Apache, the following
section might give you some guidance.
.. sidebar:: further read
- `Apache Arch Linux`_
- `Apache Debian`_
- `apache2.README.Debian`_
- `Apache Fedora`_
- `Apache directives`_
.. contents::
:depth: 2
:local:
:backlinks: entry
The Apache HTTP server
======================
If Apache_ is not installed, install it now. If apache_ is new to you, the
`Getting Started`_, `Configuration Files`_ and `Terms Used to Describe
Directives`_ documentation gives first orientation. There is also a list of
`Apache directives`_ *to keep in the pocket*.
.. tabs::
.. group-tab:: Ubuntu / debian
.. code:: bash
sudo -H apt-get install apache2
.. group-tab:: Arch Linux
.. code:: bash
sudo -H pacman -S apache
sudo -H systemctl enable httpd
sudo -H systemctl start http
.. group-tab:: Fedora / RHEL
.. code:: bash
sudo -H dnf install httpd
sudo -H systemctl enable httpd
sudo -H systemctl start httpd
Now at http://localhost you should see some kind of *Welcome* or *Test* page.
How this default site is configured, depends on the linux distribution
(compare `Apache directives`_).
.. tabs::
.. group-tab:: Ubuntu / debian
.. code:: bash
less /etc/apache2/sites-enabled/000-default.conf
In this file, there is a line setting the `DocumentRoot`_ directive:
.. code:: apache
DocumentRoot /var/www/html
And the *welcome* page is the HTML file at ``/var/www/html/index.html``.
.. group-tab:: Arch Linux
.. code:: bash
less /etc/httpd/conf/httpd.conf
In this file, there is a line setting the `DocumentRoot`_ directive:
.. code:: apache
DocumentRoot "/srv/http"
<Directory "/srv/http">
Options Indexes FollowSymLinks
AllowOverride None
Require all granted
</Directory>
The *welcome* page of Arch Linux is a page showing the directory located
at ``DocumentRoot``. This *directory* page is generated by the Module
`mod_autoindex <https://httpd.apache.org/docs/2.4/mod/mod_autoindex.html>`_:
.. code:: apache
LoadModule autoindex_module modules/mod_autoindex.so
...
Include conf/extra/httpd-autoindex.conf
.. group-tab:: Fedora / RHEL
.. code:: bash
less /etc/httpd/conf/httpd.conf
In this file, there is a line setting the ``DocumentRoot`` directive:
.. code:: apache
DocumentRoot "/var/www/html"
...
<Directory "/var/www">
AllowOverride None
# Allow open access:
Require all granted
</Directory>
On fresh installations, the ``/var/www`` is empty and the *default
welcome page* is shown, the configuration is located at::
less /etc/httpd/conf.d/welcome.conf
.. _Debian's Apache layout:
Debian's Apache layout
----------------------
Be aware, Debian's Apache layout is quite different from the standard Apache
configuration. For details look at the apache2.README.Debian_
(``/usr/share/doc/apache2/README.Debian.gz``). Some commands you should know on
Debian:
* :man:`apache2ctl`: Apache HTTP server control interface
* :man:`a2enmod`, :man:`a2dismod`: switch on/off modules
* :man:`a2enconf`, :man:`a2disconf`: switch on/off configurations
* :man:`a2ensite`, :man:`a2dissite`: switch on/off sites
.. _apache modules:
Apache modules
--------------
To load additional modules, in most distributions you have to uncomment the
lines with the corresponding LoadModule_ directive, except in :ref:`Debian's
Apache layout`.
.. tabs::
.. group-tab:: Ubuntu / debian
:ref:`Debian's Apache layout` uses :man:`a2enmod` and :man:`a2dismod` to
activate or disable modules:
.. code:: bash
sudo -H a2enmod ssl
sudo -H a2enmod headers
sudo -H a2enmod proxy
sudo -H a2enmod proxy_http
sudo -H a2enmod proxy_uwsgi
.. group-tab:: Arch Linux
In the ``/etc/httpd/conf/httpd.conf`` file, activate LoadModule_
directives:
.. code:: apache
LoadModule ssl_module modules/mod_ssl.so
LoadModule headers_module modules/mod_headers.so
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_http_module modules/mod_proxy_http.so
LoadModule proxy_uwsgi_module modules/mod_proxy_uwsgi.so
.. group-tab:: Fedora / RHEL
In the ``/etc/httpd/conf/httpd.conf`` file, activate LoadModule_
directives:
.. code:: apache
LoadModule ssl_module modules/mod_ssl.so
LoadModule headers_module modules/mod_headers.so
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_http_module modules/mod_proxy_http.so
LoadModule proxy_uwsgi_module modules/mod_proxy_uwsgi.so
.. _apache sites:
Apache sites
------------
.. tabs::
.. group-tab:: Ubuntu / debian
In :ref:`Debian's Apache layout` you create a ``searxng.conf`` with the
``<Location /searxng >`` directive and save this file in the *sites
available* folder at ``/etc/apache2/sites-available``. To enable the
``searxng.conf`` use :man:`a2ensite`:
.. code:: bash
sudo -H a2ensite searxng.conf
.. group-tab:: Arch Linux
In the ``/etc/httpd/conf/httpd.conf`` file add a IncludeOptional_
directive:
.. code:: apache
IncludeOptional sites-enabled/*.conf
Create two folders, one for the *available sites* and one for the *enabled sites*:
.. code:: bash
mkdir -p /etc/httpd/sites-available
mkdir -p /etc/httpd/sites-enabled
Create configuration at ``/etc/httpd/sites-available`` and place a
symlink to ``sites-enabled``:
.. code:: bash
sudo -H ln -s /etc/httpd/sites-available/searxng.conf \
/etc/httpd/sites-enabled/searxng.conf
.. group-tab:: Fedora / RHEL
In the ``/etc/httpd/conf/httpd.conf`` file add a IncludeOptional_
directive:
.. code:: apache
IncludeOptional sites-enabled/*.conf
Create two folders, one for the *available sites* and one for the *enabled sites*:
.. code:: bash
mkdir -p /etc/httpd/sites-available
mkdir -p /etc/httpd/sites-enabled
Create configuration at ``/etc/httpd/sites-available`` and place a
symlink to ``sites-enabled``:
.. code:: bash
sudo -H ln -s /etc/httpd/sites-available/searxng.conf \
/etc/httpd/sites-enabled/searxng.conf
.. _apache searxng site:
Apache's SearXNG site
=====================
.. _mod_uwsgi: https://uwsgi-docs.readthedocs.io/en/latest/Apache.html#mod-uwsgi
.. sidebar:: uWSGI
Use mod_proxy_uwsgi_ / don't use the old mod_uwsgi_ anymore.
To proxy the incoming requests to the SearXNG instance Apache needs the
mod_proxy_ module (:ref:`apache modules`).
.. sidebar:: HTTP headers
With ProxyPreserveHost_ the incoming ``Host`` header is passed to the proxied
host.
Depending on what your SearXNG installation is listening on, you need a http
mod_proxy_http_) or socket (mod_proxy_uwsgi_) communication to upstream.
The :ref:`installation scripts` installs the :ref:`reference setup
<use_default_settings.yml>` and a :ref:`uwsgi setup` that listens on a socket by default.
You can install and activate your own ``searxng.conf`` like shown in
:ref:`apache sites`.
.. tabs::
.. group-tab:: socket
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START apache socket
:end-before: END apache socket
.. group-tab:: http
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START apache http
:end-before: END apache http
.. _restart apache:
Restart service:
.. tabs::
.. group-tab:: Ubuntu / debian
.. code:: bash
sudo -H systemctl restart apache2
sudo -H service uwsgi restart searxng
.. group-tab:: Arch Linux
.. code:: bash
sudo -H systemctl restart httpd
sudo -H systemctl restart uwsgi@searxng
.. group-tab:: Fedora / RHEL
.. code:: bash
sudo -H systemctl restart httpd
sudo -H touch /etc/uwsgi.d/searxng.ini
disable logs
============
For better privacy you can disable Apache logs. In the examples above activate
one of the lines and `restart apache`_:
.. code:: apache
SetEnvIf Request_URI "/searxng" dontlog
# CustomLog /dev/null combined env=dontlog
The ``CustomLog`` directive disables logs for the entire (virtual) server, use it
when the URL of the service does not have a path component (``/searxng``), so when
SearXNG is located at root (``/``).

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.. _installation docker:
================
Docker Container
================
.. _ENTRYPOINT: https://docs.docker.com/engine/reference/builder/#entrypoint
.. _searxng/searxng @dockerhub: https://hub.docker.com/r/searxng/searxng
.. _searxng-docker: https://github.com/searxng/searxng-docker
.. _[caddy]: https://hub.docker.com/_/caddy
.. _Redis: https://redis.io/
----
.. sidebar:: info
- `searxng/searxng @dockerhub`_
- :origin:`Dockerfile`
- `Docker overview <https://docs.docker.com/get-started/overview>`_
- `Docker Cheat Sheet <https://docs.docker.com/get-started/docker_cheatsheet.pdf>`_
- `Alpine Linux <https://alpinelinux.org>`_
`(wiki) <https://en.wikipedia.org/wiki/Alpine_Linux>`__
`apt packages <https://pkgs.alpinelinux.org/packages>`_
- Alpine's ``/bin/sh`` is :man:`dash`
**If you intend to create a public instance using Docker, use our well maintained
docker container**
- `searxng/searxng @dockerhub`_.
.. sidebar:: hint
The rest of this article is of interest only to those who want to create and
maintain their own Docker images.
The sources are hosted at searxng-docker_ and the container includes:
- a HTTPS reverse proxy `[caddy]`_ and
- a Redis_ DB
The `default SearXNG setup <https://github.com/searxng/searxng-docker/blob/master/searxng/settings.yml>`_
of this container:
- enables :ref:`limiter <limiter>` to protect against bots
- enables :ref:`image proxy <image_proxy>` for better privacy
- enables :ref:`cache busting <static_use_hash>` to save bandwidth
----
Get Docker
==========
If you plan to build and maintain a docker image by yourself, make sure you have
`Docker installed <https://docs.docker.com/get-docker/>`_. On Linux don't
forget to add your user to the docker group (log out and log back in so that
your group membership is re-evaluated):
.. code:: sh
$ sudo usermod -a -G docker $USER
searxng/searxng
===============
.. sidebar:: ``docker run``
- `-\-rm <https://docs.docker.com/engine/reference/run/#clean-up---rm>`__
automatically clean up when container exits
- `-d <https://docs.docker.com/engine/reference/run/#detached--d>`__ start
detached container
- `-v <https://docs.docker.com/engine/reference/run/#volume-shared-filesystems>`__
mount volume ``HOST:CONTAINER``
The docker image is based on :origin:`Dockerfile` and available from
`searxng/searxng @dockerhub`_. Using the docker image is quite easy, for
instance you can pull the `searxng/searxng @dockerhub`_ image and deploy a local
instance using `docker run <https://docs.docker.com/engine/reference/run/>`_:
.. code:: sh
$ mkdir my-instance
$ cd my-instance
$ export PORT=8080
$ docker pull searxng/searxng
$ docker run --rm \
-d -p ${PORT}:8080 \
-v "${PWD}/searxng:/etc/searxng" \
-e "BASE_URL=http://localhost:$PORT/" \
-e "INSTANCE_NAME=my-instance" \
searxng/searxng
2f998.... # container's ID
The environment variables UWSGI_WORKERS and UWSGI_THREADS overwrite the default
number of UWSGI processes and UWSGI threads specified in `/etc/searxng/uwsgi.ini`.
Open your WEB browser and visit the URL:
.. code:: sh
$ xdg-open "http://localhost:$PORT"
Inside ``${PWD}/searxng``, you will find ``settings.yml`` and ``uwsgi.ini``. You
can modify these files according to your needs and restart the Docker image.
.. code:: sh
$ docker container restart 2f998
Use command ``container ls`` to list running containers, add flag `-a
<https://docs.docker.com/engine/reference/commandline/container_ls>`__ to list
exited containers also. With ``container stop`` a running container can be
stopped. To get rid of a container use ``container rm``:
.. code:: sh
$ docker container ls
CONTAINER ID IMAGE COMMAND CREATED ...
2f998d725993 searxng/searxng "/sbin/tini -- /usr/…" 7 minutes ago ...
$ docker container stop 2f998
$ docker container rm 2f998
.. sidebar:: Warning
This might remove all docker items, not only those from SearXNG.
If you won't use docker anymore and want to get rid of all containers & images
use the following *prune* command:
.. code:: sh
$ docker stop $(docker ps -aq) # stop all containers
$ docker system prune # make some housekeeping
$ docker rmi -f $(docker images -q) # drop all images
shell inside container
----------------------
.. sidebar:: Bashism
- `A tale of two shells: bash or dash <https://lwn.net/Articles/343924/>`_
- `How to make bash scripts work in dash <http://mywiki.wooledge.org/Bashism>`_
- `Checking for Bashisms <https://dev.to/bowmanjd/writing-bash-scripts-that-are-not-only-bash-checking-for-bashisms-and-testing-with-dash-1bli>`_
Like in many other distributions, Alpine's `/bin/sh
<https://wiki.ubuntu.com/DashAsBinSh>`__ is :man:`dash`. Dash is meant to be
`POSIX-compliant <https://pubs.opengroup.org/onlinepubs/9699919799>`__.
Compared to debian, in the Alpine image :man:`bash` is not installed. The
:origin:`dockerfiles/docker-entrypoint.sh` script is checked *against dash*
(``make tests.shell``).
To open a shell inside the container:
.. code:: sh
$ docker exec -it 2f998 sh
Build the image
===============
It's also possible to build SearXNG from the embedded :origin:`Dockerfile`::
$ git clone https://github.com/searxng/searxng.git
$ cd searxng
$ make docker.build
...
Successfully built 49586c016434
Successfully tagged searxng/searxng:latest
Successfully tagged searxng/searxng:1.0.0-209-9c823800-dirty
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
searxng/searxng 1.0.0-209-9c823800-dirty 49586c016434 13 minutes ago 308MB
searxng/searxng latest 49586c016434 13 minutes ago 308MB
alpine 3.13 6dbb9cc54074 3 weeks ago 5.61MB
Command line
============
.. sidebar:: docker run
Use flags ``-it`` for `interactive processes
<https://docs.docker.com/engine/reference/run/#foreground>`__.
In the :origin:`Dockerfile` the ENTRYPOINT_ is defined as
:origin:`dockerfiles/docker-entrypoint.sh`
.. code:: sh
docker run --rm -it searxng/searxng -h
.. program-output:: ../dockerfiles/docker-entrypoint.sh -h

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.. _installation nginx:
=====
NGINX
=====
.. _nginx:
https://docs.nginx.com/nginx/admin-guide/
.. _nginx server configuration:
https://docs.nginx.com/nginx/admin-guide/web-server/web-server/#setting-up-virtual-servers
.. _nginx beginners guide:
https://nginx.org/en/docs/beginners_guide.html
.. _Getting Started wiki:
https://www.nginx.com/resources/wiki/start/
.. _uWSGI support from nginx:
https://uwsgi-docs.readthedocs.io/en/latest/Nginx.html
.. _uwsgi_params:
https://uwsgi-docs.readthedocs.io/en/latest/Nginx.html#configuring-nginx
.. _SCRIPT_NAME:
https://werkzeug.palletsprojects.com/en/1.0.x/wsgi/#werkzeug.wsgi.get_script_name
This section explains how to set up a SearXNG instance using the HTTP server nginx_.
If you have used the :ref:`installation scripts` and do not have any special preferences
you can install the :ref:`SearXNG site <nginx searxng site>` using
:ref:`searxng.sh <searxng.sh overview>`:
.. code:: bash
$ sudo -H ./utils/searxng.sh install nginx
If you have special interests or problems with setting up nginx, the following
section might give you some guidance.
.. sidebar:: further reading
- nginx_
- `nginx beginners guide`_
- `nginx server configuration`_
- `Getting Started wiki`_
- `uWSGI support from nginx`_
.. contents::
:depth: 2
:local:
:backlinks: entry
The nginx HTTP server
=====================
If nginx_ is not installed, install it now.
.. tabs::
.. group-tab:: Ubuntu / debian
.. code:: bash
sudo -H apt-get install nginx
.. group-tab:: Arch Linux
.. code-block:: sh
sudo -H pacman -S nginx-mainline
sudo -H systemctl enable nginx
sudo -H systemctl start nginx
.. group-tab:: Fedora / RHEL
.. code-block:: sh
sudo -H dnf install nginx
sudo -H systemctl enable nginx
sudo -H systemctl start nginx
Now at http://localhost you should see a *Welcome to nginx!* page, on Fedora you
see a *Fedora Webserver - Test Page*. The test page comes from the default
`nginx server configuration`_. How this default site is configured,
depends on the linux distribution:
.. tabs::
.. group-tab:: Ubuntu / debian
.. code:: bash
less /etc/nginx/nginx.conf
There is one line that includes site configurations from:
.. code:: nginx
include /etc/nginx/sites-enabled/*;
.. group-tab:: Arch Linux
.. code-block:: sh
less /etc/nginx/nginx.conf
There is a configuration section named ``server``:
.. code-block:: nginx
server {
listen 80;
server_name localhost;
# ...
}
.. group-tab:: Fedora / RHEL
.. code-block:: sh
less /etc/nginx/nginx.conf
There is one line that includes site configurations from:
.. code:: nginx
include /etc/nginx/conf.d/*.conf;
.. _nginx searxng site:
NGINX's SearXNG site
====================
Now you have to create a configuration file (``searxng.conf``) for the SearXNG
site. If nginx_ is new to you, the `nginx beginners guide`_ is a good starting
point and the `Getting Started wiki`_ is always a good resource *to keep in the
pocket*.
Depending on what your SearXNG installation is listening on, you need a http or socket
communication to upstream.
.. tabs::
.. group-tab:: socket
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START nginx socket
:end-before: END nginx socket
.. group-tab:: http
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START nginx http
:end-before: END nginx http
The :ref:`installation scripts` installs the :ref:`reference setup
<use_default_settings.yml>` and a :ref:`uwsgi setup` that listens on a socket by default.
.. tabs::
.. group-tab:: Ubuntu / debian
Create configuration at ``/etc/nginx/sites-available/`` and place a
symlink to ``sites-enabled``:
.. code:: bash
sudo -H ln -s /etc/nginx/sites-available/searxng.conf \
/etc/nginx/sites-enabled/searxng.conf
.. group-tab:: Arch Linux
In the ``/etc/nginx/nginx.conf`` file, in the ``server`` section add a
`include <https://nginx.org/en/docs/ngx_core_module.html#include>`_
directive:
.. code:: nginx
server {
# ...
include /etc/nginx/default.d/*.conf;
# ...
}
Create two folders, one for the *available sites* and one for the *enabled sites*:
.. code:: bash
mkdir -p /etc/nginx/default.d
mkdir -p /etc/nginx/default.apps-available
Create configuration at ``/etc/nginx/default.apps-available`` and place a
symlink to ``default.d``:
.. code:: bash
sudo -H ln -s /etc/nginx/default.apps-available/searxng.conf \
/etc/nginx/default.d/searxng.conf
.. group-tab:: Fedora / RHEL
Create a folder for the *available sites*:
.. code:: bash
mkdir -p /etc/nginx/default.apps-available
Create configuration at ``/etc/nginx/default.apps-available`` and place a
symlink to ``conf.d``:
.. code:: bash
sudo -H ln -s /etc/nginx/default.apps-available/searxng.conf \
/etc/nginx/conf.d/searxng.conf
Restart services:
.. tabs::
.. group-tab:: Ubuntu / debian
.. code:: bash
sudo -H systemctl restart nginx
sudo -H service uwsgi restart searxng
.. group-tab:: Arch Linux
.. code:: bash
sudo -H systemctl restart nginx
sudo -H systemctl restart uwsgi@searxng
.. group-tab:: Fedora / RHEL
.. code:: bash
sudo -H systemctl restart nginx
sudo -H touch /etc/uwsgi.d/searxng.ini
Disable logs
============
For better privacy you can disable nginx logs in ``/etc/nginx/nginx.conf``.
.. code:: nginx
http {
# ...
access_log /dev/null;
error_log /dev/null;
# ...
}

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.. _installation scripts:
===================
Installation Script
===================
.. sidebar:: Update the OS first!
To avoid unwanted side effects, update your OS before installing SearXNG.
The following will install a setup as shown in :ref:`the reference architecture
<arch public>`. First you need to get a clone of the repository. The clone is only needed for
the installation procedure and some maintenance tasks.
.. sidebar:: further read
- :ref:`toolboxing`
Jump to a folder that is readable by *others* and start to clone SearXNG,
alternatively you can create your own fork and clone from there.
.. code:: bash
$ cd ~/Downloads
$ git clone https://github.com/searxng/searxng.git searxng
$ cd searxng
.. sidebar:: further read
- :ref:`inspect searxng`
To install a SearXNG :ref:`reference setup <use_default_settings.yml>`
including a :ref:`uWSGI setup <architecture uWSGI>` as described in the
:ref:`installation basic` and in the :ref:`searxng uwsgi` section type:
.. code:: bash
$ sudo -H ./utils/searxng.sh install all
.. attention::
For the installation procedure, use a *sudoer* login to run the scripts. If
you install from ``root``, take into account that the scripts are creating a
``searxng`` user. In the installation procedure this new created user does
need to have read access to the cloned SearXNG repository, which is not the case if you clone
it into a folder below ``/root``!
.. sidebar:: further read
- :ref:`update searxng`
.. _caddy: https://hub.docker.com/_/caddy
When all services are installed and running fine, you can add SearXNG to your
HTTP server. We do not have any preferences regarding the HTTP server, you can use
whatever you prefer.
We use caddy in our :ref:`docker image <installation docker>` and we have
implemented installation procedures for:
- :ref:`installation nginx`
- :ref:`installation apache`

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.. _installation basic:
=========================
Step by step installation
=========================
.. contents::
:depth: 2
:local:
:backlinks: entry
In this section we show the setup of a SearXNG instance that will be installed
by the :ref:`installation scripts`.
.. _install packages:
Install packages
================
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START distro-packages
:end-before: END distro-packages
.. hint::
This installs also the packages needed by :ref:`searxng uwsgi`
.. _create searxng user:
Create user
===========
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START create user
:end-before: END create user
.. _searxng-src:
Install SearXNG & dependencies
==============================
Start a interactive shell from new created user and clone SearXNG:
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START clone searxng
:end-before: END clone searxng
In the same shell create *virtualenv*:
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START create virtualenv
:end-before: END create virtualenv
To install SearXNG's dependencies, exit the SearXNG *bash* session you opened above
and start a new one. Before installing, check if your *virtualenv* was sourced
from the login (*~/.profile*):
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START manage.sh update_packages
:end-before: END manage.sh update_packages
.. tip::
Open a second terminal for the configuration tasks and leave the ``(searx)$``
terminal open for the tasks below.
.. _use_default_settings.yml:
Configuration
=============
.. sidebar:: ``use_default_settings: True``
- :ref:`settings.yml`
- :ref:`settings location`
- :ref:`settings use_default_settings`
- :origin:`/etc/searxng/settings.yml <utils/templates/etc/searxng/settings.yml>`
To create a initial ``/etc/searxng/settings.yml`` we recommend to start with a
copy of the file :origin:`utils/templates/etc/searxng/settings.yml`. This setup
:ref:`use default settings <settings use_default_settings>` from
:origin:`searx/settings.yml` and is shown in the tab *"Use default settings"*
below. This setup:
- enables :ref:`limiter <limiter>` to protect against bots
- enables :ref:`image proxy <image_proxy>` for better privacy
- enables :ref:`cache busting <static_use_hash>` to save bandwidth
Modify the ``/etc/searxng/settings.yml`` to your needs:
.. tabs::
.. group-tab:: Use default settings
.. literalinclude:: ../../utils/templates/etc/searxng/settings.yml
:language: yaml
:end-before: # hostname_replace:
To see the entire file jump to :origin:`utils/templates/etc/searxng/settings.yml`
.. group-tab:: searx/settings.yml
.. literalinclude:: ../../searx/settings.yml
:language: yaml
:end-before: # hostname_replace:
To see the entire file jump to :origin:`searx/settings.yml`
For a *minimal setup* you need to set ``server:secret_key``.
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START searxng config
:end-before: END searxng config
Check
=====
To check your SearXNG setup, optional enable debugging and start the *webapp*.
SearXNG looks at the exported environment ``$SEARXNG_SETTINGS_PATH`` for a
configuration file.
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START check searxng installation
:end-before: END check searxng installation
If everything works fine, hit ``[CTRL-C]`` to stop the *webapp* and disable the
debug option in ``settings.yml``. You can now exit SearXNG user bash session (enter exit
command twice). At this point SearXNG is not demonized; uwsgi allows this.

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.. _searxng uwsgi:
=====
uWSGI
=====
.. sidebar:: further reading
- `systemd.unit`_
- `uWSGI Emperor`_
.. contents::
:depth: 2
:local:
:backlinks: entry
.. _systemd.unit: https://www.freedesktop.org/software/systemd/man/systemd.unit.html
.. _One service per app in systemd:
https://uwsgi-docs.readthedocs.io/en/latest/Systemd.html#one-service-per-app-in-systemd
.. _uWSGI Emperor:
https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html
.. _uwsgi ini file:
https://uwsgi-docs.readthedocs.io/en/latest/Configuration.html#ini-files
.. _systemd unit template:
http://0pointer.de/blog/projects/instances.html
Origin uWSGI
============
.. _Tyrant mode:
https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html#tyrant-mode-secure-multi-user-hosting
How uWSGI is implemented by distributors varies. The uWSGI project itself
recommends two methods:
1. `systemd.unit`_ template file as described here `One service per app in systemd`_:
There is one `systemd unit template`_ on the system installed and one `uwsgi
ini file`_ per uWSGI-app placed at dedicated locations. Take archlinux and a
``searxng.ini`` as example::
systemd template unit: /usr/lib/systemd/system/uwsgi@.service
contains: [Service]
ExecStart=/usr/bin/uwsgi --ini /etc/uwsgi/%I.ini
SearXNG application: /etc/uwsgi/searxng.ini
links to: /etc/uwsgi/apps-available/searxng.ini
The SearXNG app (template ``/etc/uwsgi/%I.ini``) can be maintained as known
from common systemd units:
.. code:: sh
$ systemctl enable uwsgi@searxng
$ systemctl start uwsgi@searxng
$ systemctl restart uwsgi@searxng
$ systemctl stop uwsgi@searxng
2. The `uWSGI Emperor`_ which fits for maintaining a large range of uwsgi
apps and there is a `Tyrant mode`_ to secure multi-user hosting.
The Emperor mode is a special uWSGI instance that will monitor specific
events. The Emperor mode (the service) is started by a (common, not template)
systemd unit.
The Emperor service will scan specific directories for `uwsgi ini file`_\s
(also know as *vassals*). If a *vassal* is added, removed or the timestamp is
modified, a corresponding action takes place: a new uWSGI instance is started,
reload or stopped. Take Fedora and a ``searxng.ini`` as example::
to install & start SearXNG instance create --> /etc/uwsgi.d/searxng.ini
to reload the instance edit timestamp --> touch /etc/uwsgi.d/searxng.ini
to stop instance remove ini --> rm /etc/uwsgi.d/searxng.ini
Distributors
============
The `uWSGI Emperor`_ mode and `systemd unit template`_ is what the distributors
mostly offer their users, even if they differ in the way they implement both
modes and their defaults. Another point they might differ in is the packaging of
plugins (if so, compare :ref:`install packages`) and what the default python
interpreter is (python2 vs. python3).
While archlinux does not start a uWSGI service by default, Fedora (RHEL) starts
a Emperor in `Tyrant mode`_ by default (you should have read :ref:`uWSGI Tyrant
mode pitfalls`). Worth to know; debian (ubuntu) follow a complete different
approach, read see :ref:`Debian's uWSGI layout`.
.. _Debian's uWSGI layout:
Debian's uWSGI layout
---------------------
.. _uwsgi.README.Debian:
https://salsa.debian.org/uwsgi-team/uwsgi/-/raw/debian/latest/debian/uwsgi.README.Debian
Be aware, Debian's uWSGI layout is quite different from the standard uWSGI
configuration. Your are familiar with :ref:`Debian's Apache layout`? .. they do a
similar thing for the uWSGI infrastructure. The folders are::
/etc/uwsgi/apps-available/
/etc/uwsgi/apps-enabled/
The `uwsgi ini file`_ is enabled by a symbolic link::
ln -s /etc/uwsgi/apps-available/searxng.ini /etc/uwsgi/apps-enabled/
More details can be found in the uwsgi.README.Debian_
(``/usr/share/doc/uwsgi/README.Debian.gz``). Some commands you should know on
Debian:
.. code:: none
Commands recognized by init.d script
====================================
You can issue to init.d script following commands:
* start | starts daemon
* stop | stops daemon
* reload | sends to daemon SIGHUP signal
* force-reload | sends to daemon SIGTERM signal
* restart | issues 'stop', then 'start' commands
* status | shows status of daemon instance (running/not running)
'status' command must be issued with exactly one argument: '<confname>'.
Controlling specific instances of uWSGI
=======================================
You could control specific instance(s) by issuing:
SYSTEMCTL_SKIP_REDIRECT=1 service uwsgi <command> <confname> <confname>...
where:
* <command> is one of 'start', 'stop' etc.
* <confname> is the name of configuration file (without extension)
For example, this is how instance for /etc/uwsgi/apps-enabled/hello.xml is
started:
SYSTEMCTL_SKIP_REDIRECT=1 service uwsgi start hello
.. _uWSGI maintenance:
uWSGI maintenance
=================
.. tabs::
.. group-tab:: Ubuntu / debian
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START searxng uwsgi-description ubuntu-20.04
:end-before: END searxng uwsgi-description ubuntu-20.04
.. hotfix: a bug group-tab need this comment
.. group-tab:: Arch Linux
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START searxng uwsgi-description arch
:end-before: END searxng uwsgi-description arch
.. hotfix: a bug group-tab need this comment
.. group-tab:: Fedora / RHEL
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START searxng uwsgi-description fedora
:end-before: END searxng uwsgi-description fedora
.. _uwsgi setup:
uWSGI setup
===========
Create the configuration ini-file according to your distribution and restart the
uwsgi application. As shown below, the :ref:`installation scripts` installs by
default:
- a uWSGI setup that listens on a socket and
- enables :ref:`cache busting <static_use_hash>`.
.. tabs::
.. group-tab:: Ubuntu / debian
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START searxng uwsgi-appini ubuntu-20.04
:end-before: END searxng uwsgi-appini ubuntu-20.04
.. hotfix: a bug group-tab need this comment
.. group-tab:: Arch Linux
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START searxng uwsgi-appini arch
:end-before: END searxng uwsgi-appini arch
.. hotfix: a bug group-tab need this comment
.. group-tab:: Fedora / RHEL
.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
:start-after: START searxng uwsgi-appini fedora
:end-before: END searxng uwsgi-appini fedora
.. _uWSGI Tyrant mode pitfalls:
Pitfalls of the Tyrant mode
===========================
The implementation of the process owners and groups in the `Tyrant mode`_ is
somewhat unusual and requires special consideration. In `Tyrant mode`_ mode the
Emperor will run the vassal using the UID/GID of the vassal configuration file
(user and group of the app ``.ini`` file).
.. _#2099@uWSGI: https://github.com/unbit/uwsgi/issues/2099
.. _#752@uWSGI: https://github.com/unbit/uwsgi/pull/752
.. _#2425uWSGI: https://github.com/unbit/uwsgi/issues/2425
Without option ``emperor-tyrant-initgroups=true`` in ``/etc/uwsgi.ini`` the
process won't get the additional groups, but this option is not available in
2.0.x branch (see `#2099@uWSGI`_) the feature `#752@uWSGI`_ has been merged (on
Oct. 2014) to the master branch of uWSGI but had never been released; the last
major release is from Dec. 2013, since the there had been only bugfix releases
(see `#2425uWSGI`_). To shorten up:
**In Tyrant mode, there is no way to get additional groups, and the uWSGI
process misses additional permissions that may be needed.**
For example on Fedora (RHEL): If you try to install a redis DB with socket
communication and you want to connect to it from the SearXNG uWSGI, you will see a
*Permission denied* in the log of your instance::
ERROR:searx.redisdb: [searxng (993)] can't connect redis DB ...
ERROR:searx.redisdb: Error 13 connecting to unix socket: /usr/local/searxng-redis/run/redis.sock. Permission denied.
ERROR:searx.plugins.limiter: init limiter DB failed!!!
Even if your *searxng* user of the uWSGI process is added to additional groups
to give access to the socket from the redis DB::
$ groups searxng
searxng : searxng searxng-redis
To see the effective groups of the uwsgi process, you have to look at the status
of the process, by example::
$ ps -aef | grep '/usr/sbin/uwsgi --ini searxng.ini'
searxng 93 92 0 12:43 ? 00:00:00 /usr/sbin/uwsgi --ini searxng.ini
searxng 186 93 0 12:44 ? 00:00:01 /usr/sbin/uwsgi --ini searxng.ini
Here you can see that the additional "Groups" of PID 186 are unset (missing gid
of ``searxng-redis``)::
$ cat /proc/186/task/186/status
...
Uid: 993 993 993 993
Gid: 993 993 993 993
FDSize: 128
Groups:
...

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.. _installation:
============
Installation
============
*You're spoilt for choice*, choose your preferred method of installation.
- :ref:`installation docker`
- :ref:`installation scripts`
- :ref:`installation basic`
The :ref:`installation basic` is an excellent illustration of *how a SearXNG
instance is build up* (see :ref:`architecture uWSGI`). If you do not have any
special preferences, it's recommended to use the :ref:`installation docker` or the
:ref:`installation scripts`.
.. attention::
SearXNG is growing rapidly, you should regularly read our :ref:`migrate and
stay tuned` section. If you want to upgrade an existing instance or migrate
from searx to SearXNG, you should read this section first!

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.. _plugins generic:
===============
Plugins builtin
===============
.. sidebar:: Further reading ..
- :ref:`dev plugin`
Configuration defaults (at built time):
:DO: Default on
.. _configured plugins:
.. jinja:: searx
.. flat-table:: Plugins configured at built time (defaults)
:header-rows: 1
:stub-columns: 1
:widths: 3 1 9
* - Name
- DO
- Description
JS & CSS dependencies
{% for plgin in plugins %}
* - {{plgin.name}}
- {{(plgin.default_on and "y") or ""}}
- {{plgin.description}}
{% for dep in (plgin.js_dependencies + plgin.css_dependencies) %}
| ``{{dep}}`` {% endfor %}
{% endfor %}

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.. _limiter:
=======
Limiter
=======
.. sidebar:: info
The limiter requires a :ref:`Redis <settings redis>` database.
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.limiter
:members:

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========
Settings
========
.. sidebar:: Further reading ..
- :ref:`engine settings`
- :ref:`engine file`
.. toctree::
:maxdepth: 2
settings
settings_engine
settings_brand
settings_general
settings_search
settings_server
settings_ui
settings_redis
settings_outgoing
settings_categories_as_tabs

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.. _settings.yml:
================
``settings.yml``
================
This page describe the options possibilities of the :origin:`searx/settings.yml`
file.
.. sidebar:: Further reading ..
- :ref:`use_default_settings.yml`
- :ref:`search API`
.. contents::
:depth: 2
:local:
:backlinks: entry
.. _settings location:
settings.yml location
=====================
The initial ``settings.yml`` we be load from these locations:
1. the full path specified in the ``SEARXNG_SETTINGS_PATH`` environment variable.
2. ``/etc/searxng/settings.yml``
If these files don't exist (or are empty or can't be read), SearXNG uses the
:origin:`searx/settings.yml` file. Read :ref:`settings use_default_settings` to
see how you can simplify your *user defined* ``settings.yml``.
.. _settings use_default_settings:
use_default_settings
====================
.. sidebar:: ``use_default_settings: true``
- :ref:`settings location`
- :ref:`use_default_settings.yml`
- :origin:`/etc/searxng/settings.yml <utils/templates/etc/searxng/settings.yml>`
The user defined ``settings.yml`` is loaded from the :ref:`settings location`
and can relied on the default configuration :origin:`searx/settings.yml` using:
``use_default_settings: true``
``server:``
In the following example, the actual settings are the default settings defined
in :origin:`searx/settings.yml` with the exception of the ``secret_key`` and
the ``bind_address``:
.. code:: yaml
use_default_settings: true
server:
secret_key: "ultrasecretkey" # change this!
bind_address: "0.0.0.0"
``engines:``
With ``use_default_settings: true``, each settings can be override in a
similar way, the ``engines`` section is merged according to the engine
``name``. In this example, SearXNG will load all the default engines, will
enable the ``bing`` engine and define a :ref:`token <private engines>` for
the arch linux engine:
.. code:: yaml
use_default_settings: true
server:
secret_key: "ultrasecretkey" # change this!
engines:
- name: arch linux wiki
tokens: ['$ecretValue']
- name: bing
disabled: false
``engines:`` / ``remove:``
It is possible to remove some engines from the default settings. The following
example is similar to the above one, but SearXNG doesn't load the the google
engine:
.. code:: yaml
use_default_settings:
engines:
remove:
- google
server:
secret_key: "ultrasecretkey" # change this!
engines:
- name: arch linux wiki
tokens: ['$ecretValue']
``engines:`` / ``keep_only:``
As an alternative, it is possible to specify the engines to keep. In the
following example, SearXNG has only two engines:
.. code:: yaml
use_default_settings:
engines:
keep_only:
- google
- duckduckgo
server:
secret_key: "ultrasecretkey" # change this!
engines:
- name: google
tokens: ['$ecretValue']
- name: duckduckgo
tokens: ['$ecretValue']

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.. _settings brand:
==========
``brand:``
==========
.. code:: yaml
brand:
issue_url: https://github.com/searxng/searxng/issues
docs_url: https://docs.searxng.org
public_instances: https://searx.space
wiki_url: https://github.com/searxng/searxng/wiki
``issue_url`` :
If you host your own issue tracker change this URL.
``docs_url`` :
If you host your own documentation change this URL.
``public_instances`` :
If you host your own https://searx.space change this URL.
``wiki_url`` :
Link to your wiki (or ``false``)

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.. _settings categories_as_tabs:
=======================
``categories_as_tabs:``
=======================
A list of the categories that are displayed as tabs in the user interface.
Categories not listed here can still be searched with the :ref:`search-syntax`.
.. code:: yaml
categories_as_tabs:
general:
images:
videos:
news:
map:
music:
it:
science:
files:
social media:
Engines are added to ``categories:`` (compare :ref:`engine categories`), the
categories listed in ``categories_as_tabs`` are shown as tabs in the UI. If
there are no active engines in a category, the tab is not displayed (e.g. if a
user disables all engines in a category).
On the preferences page (``/preferences``) -- under *engines* -- there is an
additional tab, called *other*. In this tab are all engines listed that are not
in one of the UI tabs (not included in ``categories_as_tabs``).

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.. _settings engine:
===========
``engine:``
===========
.. sidebar:: Further reading ..
- :ref:`configured engines`
- :ref:`engines-dev`
In the code example below a *full fledged* example of a YAML setup from a dummy
engine is shown. Most of the options have a default value or even are optional.
.. hint::
A few more options are possible, but they are pretty specific to some
engines (:ref:`engine implementations`).
.. code:: yaml
- name: example engine
engine: example
shortcut: demo
base_url: 'https://{language}.example.com/'
send_accept_language_header: false
categories: general
timeout: 3.0
api_key: 'apikey'
disabled: false
language: en_US
tokens: [ 'my-secret-token' ]
weight: 1
display_error_messages: true
about:
website: https://example.com
wikidata_id: Q306656
official_api_documentation: https://example.com/api-doc
use_official_api: true
require_api_key: true
results: HTML
# overwrite values from section 'outgoing:'
enable_http2: false
retries: 1
max_connections: 100
max_keepalive_connections: 10
keepalive_expiry: 5.0
using_tor_proxy: false
proxies:
http:
- http://proxy1:8080
- http://proxy2:8080
https:
- http://proxy1:8080
- http://proxy2:8080
- socks5://user:password@proxy3:1080
- socks5h://user:password@proxy4:1080
# other network settings
enable_http: false
retry_on_http_error: true # or 403 or [404, 429]
``name`` :
Name that will be used across SearXNG to define this engine. In settings, on
the result page...
``engine`` :
Name of the python file used to handle requests and responses to and from this
search engine.
``shortcut`` :
Code used to execute bang requests (in this case using ``!bi``)
``base_url`` : optional
Part of the URL that should be stable across every request. Can be useful to
use multiple sites using only one engine, or updating the site URL without
touching at the code.
``send_accept_language_header`` :
Several engines that support languages (or regions) deal with the HTTP header
``Accept-Language`` to build a response that fits to the locale. When this
option is activated, the language (locale) that is selected by the user is used
to build and send a ``Accept-Language`` header in the request to the origin
search engine.
.. _engine categories:
``categories`` : optional
Specifies to which categories the engine should be added. Engines can be
assigned to multiple categories.
Categories can be shown as tabs (:ref:`settings categories_as_tabs`) in the
UI. A search in a tab (in the UI) will query all engines that are active in
this tab. In the preferences page (``/preferences``) -- under *engines* --
users can select what engine should be active when querying in this tab.
Alternatively, :ref:`\!bang <search-syntax>` can be used to search all engines
in a category, regardless of whether they are active or not, or whether they
are in a tab of the UI or not. For example, ``!dictionaries`` can be used to
query all search engines in that category (group).
``timeout`` : optional
Timeout of the search with the current search engine. Overwrites
``request_timeout`` from :ref:`settings outgoing`. **Be careful, it will
modify the global timeout of SearXNG.**
``api_key`` : optional
In a few cases, using an API needs the use of a secret key. How to obtain them
is described in the file.
``disabled`` : optional
To disable by default the engine, but not deleting it. It will allow the user
to manually activate it in the settings.
``inactive``: optional
Remove the engine from the settings (*disabled & removed*).
``language`` : optional
If you want to use another language for a specific engine, you can define it
by using the ISO code of language (and region), like ``fr``, ``en-US``,
``de-DE``.
``tokens`` : optional
A list of secret tokens to make this engine *private*, more details see
:ref:`private engines`.
``weight`` : default ``1``
Weighting of the results of this engine.
``display_error_messages`` : default ``true``
When an engine returns an error, the message is displayed on the user interface.
``network`` : optional
Use the network configuration from another engine.
In addition, there are two default networks:
- ``ipv4`` set ``local_addresses`` to ``0.0.0.0`` (use only IPv4 local addresses)
- ``ipv6`` set ``local_addresses`` to ``::`` (use only IPv6 local addresses)
``enable_http`` : optional
Enable HTTP for this engine (by default only HTTPS is enabled).
``retry_on_http_error`` : optional
Retry request on some HTTP status code.
Example:
* ``true`` : on HTTP status code between 400 and 599.
* ``403`` : on HTTP status code 403.
* ``[403, 429]``: on HTTP status code 403 and 429.
``proxies`` :
Overwrites proxy settings from :ref:`settings outgoing`.
``using_tor_proxy`` :
Using tor proxy (``true``) or not (``false``) for this engine. The default is
taken from ``using_tor_proxy`` of the :ref:`settings outgoing`.
.. _Pool limit configuration: https://www.python-httpx.org/advanced/#pool-limit-configuration
``max_keepalive_connection#s`` :
`Pool limit configuration`_, overwrites value ``pool_maxsize`` from
:ref:`settings outgoing` for this engine.
``max_connections`` :
`Pool limit configuration`_, overwrites value ``pool_connections`` from
:ref:`settings outgoing` for this engine.
``keepalive_expiry`` :
`Pool limit configuration`_, overwrites value ``keepalive_expiry`` from
:ref:`settings outgoing` for this engine.
.. _private engines:
Private Engines (``tokens``)
============================
Administrators might find themselves wanting to limit access to some of the
enabled engines on their instances. It might be because they do not want to
expose some private information through :ref:`offline engines`. Or they would
rather share engines only with their trusted friends or colleagues.
.. sidebar:: info
Initial sponsored by `Search and Discovery Fund
<https://nlnet.nl/discovery>`_ of `NLnet Foundation <https://nlnet.nl/>`_.
To solve this issue the concept of *private engines* exists.
A new option was added to engines named `tokens`. It expects a list of strings.
If the user making a request presents one of the tokens of an engine, they can
access information about the engine and make search requests.
Example configuration to restrict access to the Arch Linux Wiki engine:
.. code:: yaml
- name: arch linux wiki
engine: archlinux
shortcut: al
tokens: [ 'my-secret-token' ]
Unless a user has configured the right token, the engine is going to be hidden
from him/her. It is not going to be included in the list of engines on the
Preferences page and in the output of `/config` REST API call.
Tokens can be added to one's configuration on the Preferences page under "Engine
tokens". The input expects a comma separated list of strings.
The distribution of the tokens from the administrator to the users is not carved
in stone. As providing access to such engines implies that the admin knows and
trusts the user, we do not see necessary to come up with a strict process.
Instead, we would like to add guidelines to the documentation of the feature.
Example: Multilingual Search
============================
SearXNG does not support true multilingual search. You have to use the language
prefix in your search query when searching in a different language.
But there is a workaround: By adding a new search engine with a different
language, SearXNG will search in your default and other language.
Example configuration in settings.yml for a German and English speaker:
.. code-block:: yaml
search:
default_lang : "de"
...
engines:
- name : google english
engine : google
language : en
...
When searching, the default google engine will return German results and
"google english" will return English results.

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.. _settings general:
============
``general:``
============
.. code:: yaml
general:
debug: false
instance_name: "SearXNG"
privacypolicy_url: false
donation_url: false
contact_url: false
enable_metrics: true
``debug`` : ``$SEARXNG_DEBUG``
Allow a more detailed log if you run SearXNG directly. Display *detailed* error
messages in the browser too, so this must be deactivated in production.
``donation_url`` :
Set value to ``true`` to use your own donation page written in the
:ref:`searx/info/en/donate.md <searx.infopage>` and use ``false`` to disable
the donation link altogether.
``privacypolicy_url``:
Link to privacy policy.
``contact_url``:
Contact ``mailto:`` address or WEB form.
``enable_metrics``:
Enabled by default. Record various anonymous metrics available at ``/stats``,
``/stats/errors`` and ``/preferences``.

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.. _settings outgoing:
=============
``outgoing:``
=============
Communication with search engines.
.. code:: yaml
outgoing:
request_timeout: 2.0 # default timeout in seconds, can be override by engine
max_request_timeout: 10.0 # the maximum timeout in seconds
useragent_suffix: "" # information like an email address to the administrator
pool_connections: 100 # Maximum number of allowable connections, or null
# for no limits. The default is 100.
pool_maxsize: 10 # Number of allowable keep-alive connections, or null
# to always allow. The default is 10.
enable_http2: true # See https://www.python-httpx.org/http2/
# uncomment below section if you want to use a custom server certificate
# see https://www.python-httpx.org/advanced/#changing-the-verification-defaults
# and https://www.python-httpx.org/compatibility/#ssl-configuration
# verify: ~/.mitmproxy/mitmproxy-ca-cert.cer
#
# uncomment below section if you want to use a proxyq see: SOCKS proxies
# https://2.python-requests.org/en/latest/user/advanced/#proxies
# are also supported: see
# https://2.python-requests.org/en/latest/user/advanced/#socks
#
# proxies:
# all://:
# - http://proxy1:8080
# - http://proxy2:8080
#
# using_tor_proxy: true
#
# Extra seconds to add in order to account for the time taken by the proxy
#
# extra_proxy_timeout: 10.0
#
``request_timeout`` :
Global timeout of the requests made to others engines in seconds. A bigger
timeout will allow to wait for answers from slow engines, but in consequence
will slow SearXNG reactivity (the result page may take the time specified in the
timeout to load). Can be override by ``timeout`` in the :ref:`settings engine`.
``useragent_suffix`` :
Suffix to the user-agent SearXNG uses to send requests to others engines. If an
engine wish to block you, a contact info here may be useful to avoid that.
.. _Pool limit configuration: https://www.python-httpx.org/advanced/#pool-limit-configuration
``pool_maxsize``:
Number of allowable keep-alive connections, or ``null`` to always allow. The
default is 10. See ``max_keepalive_connections`` `Pool limit configuration`_.
``pool_connections`` :
Maximum number of allowable connections, or ``null`` # for no limits. The
default is 100. See ``max_connections`` `Pool limit configuration`_.
``keepalive_expiry`` :
Number of seconds to keep a connection in the pool. By default 5.0 seconds.
See ``keepalive_expiry`` `Pool limit configuration`_.
.. _httpx proxies: https://www.python-httpx.org/advanced/#http-proxying
``proxies`` :
Define one or more proxies you wish to use, see `httpx proxies`_.
If there are more than one proxy for one protocol (http, https),
requests to the engines are distributed in a round-robin fashion.
``source_ips`` :
If you use multiple network interfaces, define from which IP the requests must
be made. Example:
* ``0.0.0.0`` any local IPv4 address.
* ``::`` any local IPv6 address.
* ``192.168.0.1``
* ``[ 192.168.0.1, 192.168.0.2 ]`` these two specific IP addresses
* ``fe80::60a2:1691:e5a2:ee1f``
* ``fe80::60a2:1691:e5a2:ee1f/126`` all IP addresses in this network.
* ``[ 192.168.0.1, fe80::/126 ]``
``retries`` :
Number of retry in case of an HTTP error. On each retry, SearXNG uses an
different proxy and source ip.
``enable_http2`` :
Enable by default. Set to ``false`` to disable HTTP/2.
.. _httpx verification defaults: https://www.python-httpx.org/advanced/#changing-the-verification-defaults
.. _httpx ssl configuration: https://www.python-httpx.org/compatibility/#ssl-configuration
``verify``: : ``$SSL_CERT_FILE``, ``$SSL_CERT_DIR``
Allow to specify a path to certificate.
see `httpx verification defaults`_.
In addition to ``verify``, SearXNG supports the ``$SSL_CERT_FILE`` (for a file) and
``$SSL_CERT_DIR`` (for a directory) OpenSSL variables.
see `httpx ssl configuration`_.
``max_redirects`` :
30 by default. Maximum redirect before it is an error.
``using_tor_proxy`` :
Using tor proxy (``true``) or not (``false``) for all engines. The default is
``false`` and can be overwritten in the :ref:`settings engine`

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.. _settings redis:
==========
``redis:``
==========
.. _Redis.from_url(url): https://redis-py.readthedocs.io/en/stable/connections.html#redis.client.Redis.from_url
A redis DB can be connected by an URL, in :py:obj:`searx.redisdb` you
will find a description to test your redis connection in SearXNG. When using
sockets, don't forget to check the access rights on the socket::
ls -la /usr/local/searxng-redis/run/redis.sock
srwxrwx--- 1 searxng-redis searxng-redis ... /usr/local/searxng-redis/run/redis.sock
In this example read/write access is given to the *searxng-redis* group. To get
access rights to redis instance (the socket), your SearXNG (or even your
developer) account needs to be added to the *searxng-redis* group.
``url`` : ``$SEARXNG_REDIS_URL``
URL to connect redis database, see `Redis.from_url(url)`_ & :ref:`redis db`::
redis://[[username]:[password]]@localhost:6379/0
rediss://[[username]:[password]]@localhost:6379/0
unix://[[username]:[password]]@/path/to/socket.sock?db=0
.. _Redis Developer Notes:
Redis Developer Notes
=====================
To set up a local redis instance, first set the socket path of the Redis DB
in your YAML setting:
.. code:: yaml
redis:
url: unix:///usr/local/searxng-redis/run/redis.sock?db=0
Then use the following commands to install the redis instance (:ref:`manage
redis.help`):
.. code:: sh
$ ./manage redis.build
$ sudo -H ./manage redis.install
$ sudo -H ./manage redis.addgrp "${USER}"
# don't forget to logout & login to get member of group

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.. _settings search:
===========
``search:``
===========
.. code:: yaml
search:
safe_search: 0
autocomplete: ""
default_lang: ""
ban_time_on_fail: 5
max_ban_time_on_fail: 120
suspended_times:
SearxEngineAccessDenied: 86400
SearxEngineCaptcha: 86400
SearxEngineTooManyRequests: 3600
cf_SearxEngineCaptcha: 1296000
cf_SearxEngineAccessDenied: 86400
recaptcha_SearxEngineCaptcha: 604800
formats:
- html
``safe_search``:
Filter results.
- ``0``: None
- ``1``: Moderate
- ``2``: Strict
``autocomplete``:
Existing autocomplete backends, leave blank to turn it off.
- ``dbpedia``
- ``duckduckgo``
- ``google``
- ``mwmbl``
- ``startpage``
- ``swisscows``
- ``qwant``
- ``wikipedia``
``default_lang``:
Default search language - leave blank to detect from browser information or
use codes from :origin:`searx/languages.py`.
``languages``:
List of available languages - leave unset to use all codes from
:origin:`searx/languages.py`. Otherwise list codes of available languages.
The ``all`` value is shown as the ``Default language`` in the user interface
(in most cases, it is meant to send the query without a language parameter ;
in some cases, it means the English language) Example:
.. code:: yaml
languages:
- all
- en
- en-US
- de
- it-IT
- fr
- fr-BE
``ban_time_on_fail``:
Ban time in seconds after engine errors.
``max_ban_time_on_fail``:
Max ban time in seconds after engine errors.
``suspended_times``:
Engine suspension time after error (in seconds; set to 0 to disable)
``SearxEngineAccessDenied``: 86400
For error "Access denied" and "HTTP error [402, 403]"
``SearxEngineCaptcha``: 86400
For error "CAPTCHA"
``SearxEngineTooManyRequests``: 3600
For error "Too many request" and "HTTP error 429"
Cloudflare CAPTCHA:
- ``cf_SearxEngineCaptcha``: 1296000
- ``cf_SearxEngineAccessDenied``: 86400
Google CAPTCHA:
- ``recaptcha_SearxEngineCaptcha``: 604800
``formats``:
Result formats available from web, remove format to deny access (use lower
case).
- ``html``
- ``csv``
- ``json``
- ``rss``

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.. _settings server:
===========
``server:``
===========
.. code:: yaml
server:
base_url: http://example.org/location # change this!
port: 8888
bind_address: "127.0.0.1"
secret_key: "ultrasecretkey" # change this!
limiter: false
public_instance: false
image_proxy: false
default_http_headers:
X-Content-Type-Options : nosniff
X-XSS-Protection : 1; mode=block
X-Download-Options : noopen
X-Robots-Tag : noindex, nofollow
Referrer-Policy : no-referrer
``base_url`` : ``$SEARXNG_URL`` :ref:`buildenv <make buildenv>`
The base URL where SearXNG is deployed. Used to create correct inbound links.
If you change the value, don't forget to rebuild instance's environment
(:ref:`utils/brand.env <make buildenv>`)
``port`` & ``bind_address``: ``$SEARXNG_PORT`` & ``$SEARXNG_BIND_ADDRESS`` :ref:`buildenv <make buildenv>`
Port number and *bind address* of the SearXNG web application if you run it
directly using ``python searx/webapp.py``. Doesn't apply to a SearXNG
services running behind a proxy and using socket communications. If you
change the value, don't forget to rebuild instance's environment
(:ref:`utils/brand.env <make buildenv>`)
``secret_key`` : ``$SEARXNG_SECRET``
Used for cryptography purpose.
``limiter`` :
Rate limit the number of request on the instance, block some bots. The
:ref:`limiter` requires a :ref:`settings redis` database.
.. _public_instance:
``public_instance`` :
Setting that allows to enable features specifically for public instances (not
needed for local usage). By set to ``true`` the following features are
activated:
- :py:obj:`searx.botdetection.link_token` in the :ref:`limiter`
.. _image_proxy:
``image_proxy`` :
Allow your instance of SearXNG of being able to proxy images. Uses memory space.
.. _HTTP headers: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers
``default_http_headers`` :
Set additional HTTP headers, see `#755 <https://github.com/searx/searx/issues/715>`__

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.. _settings ui:
=======
``ui:``
=======
.. _cache busting:
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#caching_static_assets_with_cache_busting
.. code:: yaml
ui:
static_use_hash: false
default_locale: ""
query_in_title: false
infinite_scroll: false
center_alignment: false
cache_url: https://web.archive.org/web/
default_theme: simple
theme_args:
simple_style: auto
search_on_category_select: true
hotkeys: default
.. _static_use_hash:
``static_use_hash`` :
Enables `cache busting`_ of static files.
``default_locale`` :
SearXNG interface language. If blank, the locale is detected by using the
browser language. If it doesn't work, or you are deploying a language
specific instance of searx, a locale can be defined using an ISO language
code, like ``fr``, ``en``, ``de``.
``query_in_title`` :
When true, the result page's titles contains the query it decreases the
privacy, since the browser can records the page titles.
``infinite_scroll``:
When true, automatically loads the next page when scrolling to bottom of the current page.
``center_alignment`` : default ``false``
When enabled, the results are centered instead of being in the left (or RTL)
side of the screen. This setting only affects the *desktop layout*
(:origin:`min-width: @tablet <searx/static/themes/simple/src/less/definitions.less>`)
.. cache_url:
``cache_url`` : ``https://web.archive.org/web/``
URL prefix of the internet archive or cache, don't forget trailing slash (if
needed). The default is https://web.archive.org/web/ alternatives are:
- https://webcache.googleusercontent.com/search?q=cache:
- https://archive.today/
``default_theme`` :
Name of the theme you want to use by default on your SearXNG instance.
``theme_args.simple_style``:
Style of simple theme: ``auto``, ``light``, ``dark``
``results_on_new_tab``:
Open result links in a new tab by default.
``search_on_category_select``:
Perform search immediately if a category selected. Disable to select multiple categories.
``hotkeys``:
Hotkeys to use in the search interface: ``default``, ``vim`` (Vim-like).

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.. _searxng maintenance:
===================
SearXNG maintenance
===================
.. sidebar:: further read
- :ref:`toolboxing`
- :ref:`uWSGI maintenance`
.. contents::
:depth: 2
:local:
:backlinks: entry
.. _update searxng:
How to update
=============
How to update depends on the :ref:`installation` method. If you have used the
:ref:`installation scripts`, use the ``update`` command from the :ref:`searxng.sh`
script.
.. code:: sh
sudo -H ./utils/searxng.sh instance update
.. _inspect searxng:
How to inspect & debug
======================
How to debug depends on the :ref:`installation` method. If you have used the
:ref:`installation scripts`, use the ``inspect`` command from the :ref:`searxng.sh`
script.
.. code:: sh
sudo -H ./utils/searxng.sh instance inspect
.. _migrate and stay tuned:
Migrate and stay tuned!
=======================
.. sidebar:: info
- :pull:`1332`
- :pull:`456`
- :pull:`A comment about rolling release <446#issuecomment-954730358>`
SearXNG is a *rolling release*; each commit to the master branch is a release.
SearXNG is growing rapidly, the services and opportunities are change every now
and then, to name just a few:
- Bot protection has been switched from filtron to SearXNG's :ref:`limiter
<limiter>`, this requires a :ref:`Redis <settings redis>` database.
- The image proxy morty is no longer needed, it has been replaced by the
:ref:`image proxy <image_proxy>` from SearXNG.
- To save bandwidth :ref:`cache busting <static_use_hash>` has been implemented.
To get in use, the ``static-expires`` needs to be set in the :ref:`uwsgi
setup`.
To stay tuned and get in use of the new features, instance maintainers have to
update the SearXNG code regularly (see :ref:`update searxng`). As the above
examples show, this is not always enough, sometimes services have to be set up
or reconfigured and sometimes services that are no longer needed should be
uninstalled.
.. hint::
First of all: SearXNG is installed by the script :ref:`searxng.sh`. If you
have old filtron, morty or searx setup you should consider complete
uninstall/reinstall.
Here you will find a list of changes that affect the infrastructure. Please
check to what extent it is necessary to update your installations:
:pull:`1595`: ``[fix] uWSGI: increase buffer-size``
Re-install uWSGI (:ref:`searxng.sh`) or fix your uWSGI ``searxng.ini``
file manually.
remove obsolete services
------------------------
If your searx instance was installed *"Step by step"* or by the *"Installation
scripts"*, you need to undo the installation procedure completely. If you have
morty & filtron installed, it is recommended to uninstall these services also.
In case of scripts, to uninstall use the scripts from the origin you installed
searx from or try::
$ sudo -H ./utils/filtron.sh remove all
$ sudo -H ./utils/morty.sh remove all
$ sudo -H ./utils/searx.sh remove all
.. hint::
If you are migrate from searx take into account that the ``.config.sh`` is no
longer used.
If you upgrade from searx or from before :pull:`1332` has been merged and you
have filtron and/or morty installed, don't forget to remove HTTP sites.
Apache::
$ sudo -H ./utils/filtron.sh apache remove
$ sudo -H ./utils/morty.sh apache remove
nginx::
$ sudo -H ./utils/filtron.sh nginx remove
$ sudo -H ./utils/morty.sh nginx remove
Check after Installation
------------------------
Once you have done your installation, you can run a SearXNG *check* procedure,
to see if there are some left overs. In this example there exists a *old*
``/etc/searx/settings.yml``::
$ sudo -H ./utils/searxng.sh instance check
SearXNG checks
--------------
ERROR: settings.yml in /etc/searx/ is deprecated, move file to folder /etc/searxng/
INFO: [OK] (old) account 'searx' does not exists
INFO: [OK] (old) account 'filtron' does not exists
INFO: [OK] (old) account 'morty' does not exists
...
INFO searx.redisdb : connecting to Redis db=0 path='/usr/local/searxng-redis/run/redis.sock'
INFO searx.redisdb : connected to Redis

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.. _how to contribute:
=================
How to contribute
=================
.. contents::
:depth: 2
:local:
:backlinks: entry
Prime directives: Privacy, Hackability
======================================
SearXNG has two prime directives, **privacy-by-design and hackability** . The
hackability comes in three levels:
- support of search engines
- plugins to alter search behaviour
- hacking SearXNG itself
Note the lack of "world domination" among the directives. SearXNG has no
intention of wide mass-adoption, rounded corners, etc. The prime directive
"privacy" deserves a separate chapter, as it's quite uncommon unfortunately.
Privacy-by-design
-----------------
SearXNG was born out of the need for a **privacy-respecting** search tool which
can be extended easily to maximize both, its search and its privacy protecting
capabilities.
A few widely used features work differently or turned off by default or not
implemented at all **as a consequence of privacy-by-design**.
If a feature reduces the privacy preserving aspects of searx, it should be
switched off by default or should not implemented at all. There are plenty of
search engines already providing such features. If a feature reduces the
protection of searx, users must be informed about the effect of choosing to
enable it. Features that protect privacy but differ from the expectations of
the user should also be explained.
Also, if you think that something works weird with searx, it's might be because
of the tool you use is designed in a way to interfere with the privacy respect.
Submitting a bugreport to the vendor of the tool that misbehaves might be a good
feedback to reconsider the disrespect to its customers (e.g. ``GET`` vs ``POST``
requests in various browsers).
Remember the other prime directive of SearXNG is to be hackable, so if the above
privacy concerns do not fancy you, simply fork it.
*Happy hacking.*
Code
====
.. _PEP8: https://www.python.org/dev/peps/pep-0008/
.. _Conventional Commits: https://www.conventionalcommits.org/
.. _Git Commit Good Practice: https://wiki.openstack.org/wiki/GitCommitMessages
.. _Structural split of changes:
https://wiki.openstack.org/wiki/GitCommitMessages#Structural_split_of_changes
.. _gitmoji: https://gitmoji.carloscuesta.me/
.. _Semantic PR: https://github.com/zeke/semantic-pull-requests
.. sidebar:: Create good commits!
- `Structural split of changes`_
- `Conventional Commits`_
- `Git Commit Good Practice`_
- some like to use: gitmoji_
- not yet active: `Semantic PR`_
In order to submit a patch, please follow the steps below:
- Follow coding conventions.
- PEP8_ standards apply, except the convention of line length
- Maximum line length is 120 characters
- The cardinal rule for creating good commits is to ensure there is only one
*logical change* per commit / read `Structural split of changes`_
- Check if your code breaks existing tests. If so, update the tests or fix your
code.
- If your code can be unit-tested, add unit tests.
- Add yourself to the :origin:`AUTHORS.rst` file.
- Choose meaningful commit messages, read `Conventional Commits`_
.. code::
<type>[optional scope]: <description>
[optional body]
[optional footer(s)]
- Create a pull request.
For more help on getting started with SearXNG development, see :ref:`devquickstart`.
Translation
===========
Translation currently takes place on :ref:`weblate <translation>`.
.. _contrib docs:
Documentation
=============
.. _Sphinx: https://www.sphinx-doc.org
.. _reST: https://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html
.. sidebar:: The reST sources
has been moved from ``gh-branch`` into ``master`` (:origin:`docs`).
The documentation is built using Sphinx_. So in order to be able to generate
the required files, you have to install it on your system. Much easier, use
our :ref:`makefile`.
Here is an example which makes a complete rebuild:
.. code:: sh
$ make docs.clean docs.html
...
The HTML pages are in dist/docs.
.. _make docs.live:
live build
----------
.. _sphinx-autobuild:
https://github.com/executablebooks/sphinx-autobuild/blob/master/README.md
.. sidebar:: docs.clean
It is recommended to assert a complete rebuild before deploying (use
``docs.clean``).
Live build is like WYSIWYG. If you want to edit the documentation, its
recommended to use. The Makefile target ``docs.live`` builds the docs, opens
URL in your favorite browser and rebuilds every time a reST file has been
changed (:ref:`make docs.clean`).
.. code:: sh
$ make docs.live
...
The HTML pages are in dist/docs.
... Serving on http://0.0.0.0:8000
... Start watching changes
Live builds are implemented by sphinx-autobuild_. Use environment
``$(SPHINXOPTS)`` to pass arguments to the sphinx-autobuild_ command. Except
option ``--host`` (which is always set to ``0.0.0.0``) you can pass any
argument. E.g to find and use a free port, use:
.. code:: sh
$ SPHINXOPTS="--port 0" make docs.live
...
... Serving on http://0.0.0.0:50593
...
.. _deploy on github.io:
deploy on github.io
-------------------
To deploy documentation at :docs:`github.io <.>` use Makefile target :ref:`make
docs.gh-pages`, which builds the documentation and runs all the needed git add,
commit and push:
.. code:: sh
$ make docs.clean docs.gh-pages
.. attention::
If you are working in your own brand, don't forget to adjust your
:ref:`settings brand`.

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.. _demo offline engine:
===================
Demo Offline Engine
===================
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.demo_offline
:members:

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.. _demo online engine:
==================
Demo Online Engine
==================
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.demo_online
:members:

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.. _engines-dev:
===============
Engine Overview
===============
.. contents::
:depth: 3
:local:
:backlinks: entry
.. _metasearch-engine: https://en.wikipedia.org/wiki/Metasearch_engine
.. sidebar:: Further reading ..
- :ref:`configured engines`
- :ref:`settings engine`
SearXNG is a metasearch-engine_, so it uses different search engines to provide
better results.
Because there is no general search API which could be used for every search
engine, an adapter has to be built between SearXNG and the external search
engines. Adapters are stored under the folder :origin:`searx/engines`.
.. _general engine configuration:
General Engine Configuration
============================
It is required to tell SearXNG the type of results the engine provides. The
arguments can be set in the engine file or in the settings file (normally
``settings.yml``). The arguments in the settings file override the ones in the
engine file.
It does not matter if an option is stored in the engine file or in the settings.
However, the standard way is the following:
.. _engine file:
Engine File
-----------
.. table:: Common options in the engine module
:width: 100%
======================= =========== ========================================================
argument type information
======================= =========== ========================================================
categories list categories, in which the engine is working
paging boolean support multiple pages
time_range_support boolean support search time range
engine_type str - ``online`` :ref:`[ref] <online engines>` by
default, other possibles values are:
- ``offline`` :ref:`[ref] <offline engines>`
- ``online_dictionary`` :ref:`[ref] <online dictionary>`
- ``online_currency`` :ref:`[ref] <online currency>`
- ``online_url_search`` :ref:`[ref] <online url search>`
======================= =========== ========================================================
.. _engine settings:
Engine ``settings.yml``
-----------------------
For a more detailed description, see :ref:`settings engine` in the :ref:`settings.yml`.
.. table:: Common options in the engine setup (``settings.yml``)
:width: 100%
======================= =========== ==================================================
argument type information
======================= =========== ==================================================
name string name of search-engine
engine string name of searxng-engine (file name without ``.py``)
enable_http bool enable HTTP (by default only HTTPS is enabled).
shortcut string shortcut of search-engine
timeout string specific timeout for search-engine
display_error_messages boolean display error messages on the web UI
proxies dict set proxies for a specific engine
(e.g. ``proxies : {http: socks5://proxy:port,
https: socks5://proxy:port}``)
======================= =========== ==================================================
.. _engine overrides:
Overrides
---------
A few of the options have default values in the namespace of the engine's python
module, but are often overwritten by the settings. If ``None`` is assigned to an
option in the engine file, it has to be redefined in the settings, otherwise
SearXNG will not start with that engine (global names with a leading underline can
be ``None``).
Here is an very simple example of the global names in the namespace of engine's
module:
.. code:: python
# engine dependent config
categories = ['general']
paging = True
_non_overwritten_global = 'foo'
.. table:: The naming of overrides is arbitrary / recommended overrides are:
:width: 100%
======================= =========== ===========================================
argument type information
======================= =========== ===========================================
base_url string base-url, can be overwritten to use same
engine on other URL
number_of_results int maximum number of results per request
language string ISO code of language and country like en_US
api_key string api-key if required by engine
======================= =========== ===========================================
.. _engine request:
Making a Request
================
To perform a search an URL have to be specified. In addition to specifying an
URL, arguments can be passed to the query.
.. _engine request arguments:
Passed Arguments (request)
--------------------------
These arguments can be used to construct the search query. Furthermore,
parameters with default value can be redefined for special purposes.
.. _engine request online:
.. table:: If the ``engine_type`` is :py:obj:`online
<searx.search.processors.online.OnlineProcessor.get_params>`
:width: 100%
====================== ============== ========================================================================
argument type default-value, information
====================== ============== ========================================================================
url str ``''``
method str ``'GET'``
headers set ``{}``
data set ``{}``
cookies set ``{}``
verify bool ``True``
headers.User-Agent str a random User-Agent
category str current category, like ``'general'``
safesearch int ``0``, between ``0`` and ``2`` (normal, moderate, strict)
time_range Optional[str] ``None``, can be ``day``, ``week``, ``month``, ``year``
pageno int current pagenumber
searxng_locale str SearXNG's locale selected by user. Specific language code like
``'en'``, ``'en-US'``, or ``'all'`` if unspecified.
====================== ============== ========================================================================
.. _engine request online_dictionary:
.. table:: If the ``engine_type`` is :py:obj:`online_dictionary
<searx.search.processors.online_dictionary.OnlineDictionaryProcessor.get_params>`,
in addition to the :ref:`online <engine request online>` arguments:
:width: 100%
====================== ============== ========================================================================
argument type default-value, information
====================== ============== ========================================================================
from_lang str specific language code like ``'en_US'``
to_lang str specific language code like ``'en_US'``
query str the text query without the languages
====================== ============== ========================================================================
.. _engine request online_currency:
.. table:: If the ``engine_type`` is :py:obj:`online_currency
<searx.search.processors.online_currency.OnlineCurrencyProcessor.get_params>`,
in addition to the :ref:`online <engine request online>` arguments:
:width: 100%
====================== ============== ========================================================================
argument type default-value, information
====================== ============== ========================================================================
amount float the amount to convert
from str ISO 4217 code
to str ISO 4217 code
from_name str currency name
to_name str currency name
====================== ============== ========================================================================
.. _engine request online_url_search:
.. table:: If the ``engine_type`` is :py:obj:`online_url_search
<searx.search.processors.online_url_search.OnlineUrlSearchProcessor.get_params>`,
in addition to the :ref:`online <engine request online>` arguments:
:width: 100%
====================== ============== ========================================================================
argument type default-value, information
====================== ============== ========================================================================
search_url dict URLs from the search query:
.. code:: python
{
'http': str,
'ftp': str,
'data:image': str
}
====================== ============== ========================================================================
Specify Request
---------------
The function :py:func:`def request(query, params):
<searx.engines.demo_online.request>` always returns the ``params`` variable, the
following parameters can be used to specify a search request:
.. table::
:width: 100%
=================== =========== ==========================================================================
argument type information
=================== =========== ==========================================================================
url str requested url
method str HTTP request method
headers set HTTP header information
data set HTTP data information
cookies set HTTP cookies
verify bool Performing SSL-Validity check
allow_redirects bool Follow redirects
max_redirects int maximum redirects, hard limit
soft_max_redirects int maximum redirects, soft limit. Record an error but don't stop the engine
raise_for_httperror bool True by default: raise an exception if the HTTP code of response is >= 300
=================== =========== ==========================================================================
.. _engine results:
.. _engine media types:
Result Types (``template``)
===========================
Each result item of an engine can be of different media-types. Currently the
following media-types are supported. To set another media-type as
:ref:`template default`, the parameter ``template`` must be set to the desired
type.
.. _template default:
``default``
-----------
.. table:: Parameter of the **default** media type:
:width: 100%
========================= =====================================================
result-parameter information
========================= =====================================================
url string, url of the result
title string, title of the result
content string, general result-text
publishedDate :py:class:`datetime.datetime`, time of publish
========================= =====================================================
.. _template images:
``images``
----------
.. table:: Parameter of the **images** media type:
:width: 100%
========================= =====================================================
result-parameter information
------------------------- -----------------------------------------------------
template is set to ``images.html``
========================= =====================================================
url string, url to the result site
title string, title of the result *(partly implemented)*
content *(partly implemented)*
publishedDate :py:class:`datetime.datetime`,
time of publish *(partly implemented)*
img\_src string, url to the result image
thumbnail\_src string, url to a small-preview image
========================= =====================================================
.. _template videos:
``videos``
----------
.. table:: Parameter of the **videos** media type:
:width: 100%
========================= =====================================================
result-parameter information
------------------------- -----------------------------------------------------
template is set to ``videos.html``
========================= =====================================================
url string, url of the result
title string, title of the result
content *(not implemented yet)*
publishedDate :py:class:`datetime.datetime`, time of publish
thumbnail string, url to a small-preview image
========================= =====================================================
.. _template torrent:
``torrent``
-----------
.. _magnetlink: https://en.wikipedia.org/wiki/Magnet_URI_scheme
.. table:: Parameter of the **torrent** media type:
:width: 100%
========================= =====================================================
result-parameter information
------------------------- -----------------------------------------------------
template is set to ``torrent.html``
========================= =====================================================
url string, url of the result
title string, title of the result
content string, general result-text
publishedDate :py:class:`datetime.datetime`,
time of publish *(not implemented yet)*
seed int, number of seeder
leech int, number of leecher
filesize int, size of file in bytes
files int, number of files
magnetlink string, magnetlink_ of the result
torrentfile string, torrentfile of the result
========================= =====================================================
.. _template map:
``map``
-------
.. table:: Parameter of the **map** media type:
:width: 100%
========================= =====================================================
result-parameter information
------------------------- -----------------------------------------------------
template is set to ``map.html``
========================= =====================================================
url string, url of the result
title string, title of the result
content string, general result-text
publishedDate :py:class:`datetime.datetime`, time of publish
latitude latitude of result (in decimal format)
longitude longitude of result (in decimal format)
boundingbox boundingbox of result (array of 4. values
``[lat-min, lat-max, lon-min, lon-max]``)
geojson geojson of result (https://geojson.org/)
osm.type type of osm-object (if OSM-Result)
osm.id id of osm-object (if OSM-Result)
address.name name of object
address.road street name of object
address.house_number house number of object
address.locality city, place of object
address.postcode postcode of object
address.country country of object
========================= =====================================================
.. _template paper:
``paper``
---------
.. _BibTeX format: https://www.bibtex.com/g/bibtex-format/
.. _BibTeX field types: https://en.wikipedia.org/wiki/BibTeX#Field_types
.. list-table:: Parameter of the **paper** media type /
see `BibTeX field types`_ and `BibTeX format`_
:header-rows: 2
:width: 100%
* - result-parameter
- Python type
- information
* - template
- :py:class:`str`
- is set to ``paper.html``
* - title
- :py:class:`str`
- title of the result
* - content
- :py:class:`str`
- abstract
* - comments
- :py:class:`str`
- free text display in italic below the content
* - tags
- :py:class:`List <list>`\ [\ :py:class:`str`\ ]
- free tag list
* - publishedDate
- :py:class:`datetime <datetime.datetime>`
- last publication date
* - type
- :py:class:`str`
- short description of medium type, e.g. *book*, *pdf* or *html* ...
* - authors
- :py:class:`List <list>`\ [\ :py:class:`str`\ ]
- list of authors of the work (authors with a "s")
* - editor
- :py:class:`str`
- list of editors of a book
* - publisher
- :py:class:`str`
- name of the publisher
* - journal
- :py:class:`str`
- name of the journal or magazine the article was
published in
* - volume
- :py:class:`str`
- volume number
* - pages
- :py:class:`str`
- page range where the article is
* - number
- :py:class:`str`
- number of the report or the issue number for a journal article
* - doi
- :py:class:`str`
- DOI number (like ``10.1038/d41586-018-07848-2``)
* - issn
- :py:class:`List <list>`\ [\ :py:class:`str`\ ]
- ISSN number like ``1476-4687``
* - isbn
- :py:class:`List <list>`\ [\ :py:class:`str`\ ]
- ISBN number like ``9780201896831``
* - pdf_url
- :py:class:`str`
- URL to the full article, the PDF version
* - html_url
- :py:class:`str`
- URL to full article, HTML version

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.. _searx.enginelib:
==============
Engine Library
==============
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.enginelib
:members:
.. _searx.enginelib.traits:
Engine traits
=============
.. automodule:: searx.enginelib.traits
:members:

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.. _searx.engines loader:
========================
SearXNG's engines loader
========================
.. automodule:: searx.engines
:members:

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.. _engine implementations:
======================
Engine Implementations
======================
.. contents::
:depth: 2
:local:
:backlinks: entry
.. toctree::
:caption: Framework Components
:maxdepth: 2
enginelib
engines
engine_overview
Engine Types
============
The :py:obj:`engine_type <searx.enginelib.Engine.engine_type>` of an engine
determines which :ref:`search processor <searx.search.processors>` is used by
the engine.
In this section a list of the engines that are documented is given, a complete
list of the engines can be found in the source under: :origin:`searx/engines`.
.. _online engines:
Online Engines
--------------
.. sidebar:: info
- :py:obj:`processors.online <searx.search.processors.online>`
.. toctree::
:maxdepth: 1
:glob:
demo/demo_online
xpath
mediawiki
.. toctree::
:maxdepth: 1
:glob:
online/*
.. _offline engines:
Offline Engines
---------------
.. sidebar:: info
- :py:obj:`processors.offline <searx.search.processors.offline>`
.. toctree::
:maxdepth: 1
:glob:
offline_concept
demo/demo_offline
offline/*
.. _online url search:
Online URL Search
-----------------
.. sidebar:: info
- :py:obj:`processors.online_url_search <searx.search.processors.online_url_search>`
.. toctree::
:maxdepth: 1
:glob:
online_url_search/*
.. _online currency:
Online Currency
---------------
.. sidebar:: info
- :py:obj:`processors.online_currency <searx.search.processors.online_currency>`
*no engine of this type is documented yet / comming soon*
.. _online dictionary:
Online Dictionary
-----------------
.. sidebar:: info
- :py:obj:`processors.online_dictionary <searx.search.processors.online_dictionary>`
*no engine of this type is documented yet / comming soon*

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.. _mediawiki engine:
================
MediaWiki Engine
================
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.mediawiki
:members:

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.. _engine command:
====================
Command Line Engines
====================
.. sidebar:: info
- :origin:`command.py <searx/engines/command.py>`
- :ref:`offline engines`
.. contents::
:depth: 2
:local:
:backlinks: entry
.. sidebar:: info
Initial sponsored by `Search and Discovery Fund
<https://nlnet.nl/discovery>`_ of `NLnet Foundation <https://nlnet.nl/>`_.
.. automodule:: searx.engines.command
:members:

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.. _nosql engines:
===============
NoSQL databases
===============
.. sidebar:: further read
- `NoSQL databases <https://en.wikipedia.org/wiki/NoSQL>`_
- `redis.io <https://redis.io/>`_
- `MongoDB <https://www.mongodb.com>`_
.. contents::
:depth: 2
:local:
:backlinks: entry
.. sidebar:: info
Initial sponsored by `Search and Discovery Fund
<https://nlnet.nl/discovery>`_ of `NLnet Foundation <https://nlnet.nl/>`_.
The following `NoSQL databases`_ are supported:
- :ref:`engine redis_server`
- :ref:`engine mongodb`
All of the engines above are just commented out in the :origin:`settings.yml
<searx/settings.yml>`, as you have to set various options and install
dependencies before using them.
By default, the engines use the ``key-value`` template for displaying results /
see :origin:`simple <searx/templates/simple/result_templates/key-value.html>`
theme. If you are not satisfied with the original result layout, you can use
your own template, set ``result_template`` attribute to ``{template_name}`` and
place the templates at::
searx/templates/{theme_name}/result_templates/{template_name}
Furthermore, if you do not wish to expose these engines on a public instance, you
can still add them and limit the access by setting ``tokens`` as described in
section :ref:`private engines`.
Extra Dependencies
==================
For using :ref:`engine redis_server` or :ref:`engine mongodb` you need to
install additional packages in Python's Virtual Environment of your SearXNG
instance. To switch into the environment (:ref:`searxng-src`) you can use
:ref:`searxng.sh`::
$ sudo utils/searxng.sh instance cmd bash
(searxng-pyenv)$ pip install ...
Configure the engines
=====================
`NoSQL databases`_ are used for storing arbitrary data without first defining
their structure.
.. _engine redis_server:
Redis Server
------------
.. _redis: https://github.com/andymccurdy/redis-py#installation
.. sidebar:: info
- ``pip install`` redis_
- redis.io_
- :origin:`redis_server.py <searx/engines/redis_server.py>`
.. automodule:: searx.engines.redis_server
:members:
.. _engine mongodb:
MongoDB
-------
.. _pymongo: https://github.com/mongodb/mongo-python-driver#installation
.. sidebar:: info
- ``pip install`` pymongo_
- MongoDB_
- :origin:`mongodb.py <searx/engines/mongodb.py>`
.. automodule:: searx.engines.mongodb
:members:

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=================
Local Search APIs
=================
.. sidebar:: further read
- `Comparison to alternatives
<https://docs.meilisearch.com/learn/what_is_meilisearch/comparison_to_alternatives.html>`_
.. contents::
:depth: 1
:local:
:backlinks: entry
.. sidebar:: info
Initial sponsored by `Search and Discovery Fund
<https://nlnet.nl/discovery>`_ of `NLnet Foundation <https://nlnet.nl/>`_.
Administrators might find themselves wanting to integrate locally running search
engines. The following ones are supported for now:
* `Elasticsearch`_
* `Meilisearch`_
* `Solr`_
Each search engine is powerful, capable of full-text search. All of the engines
above are added to ``settings.yml`` just commented out, as you have to
``base_url`` for all them.
Please note that if you are not using HTTPS to access these engines, you have to
enable HTTP requests by setting ``enable_http`` to ``True``.
Furthermore, if you do not want to expose these engines on a public instance,
you can still add them and limit the access by setting ``tokens`` as described
in section :ref:`private engines`.
.. _engine meilisearch:
MeiliSearch
===========
.. automodule:: searx.engines.meilisearch
:members:
.. _engine elasticsearch:
Elasticsearch
=============
.. automodule:: searx.engines.elasticsearch
:members:
.. _engine solr:
Solr
====
.. automodule:: searx.engines.solr
:members:

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.. _sql engines:
===========
SQL Engines
===========
.. sidebar:: further read
- `SQLite <https://www.sqlite.org/index.html>`_
- `PostgreSQL <https://www.postgresql.org>`_
- `MySQL <https://www.mysql.com>`_
.. contents::
:depth: 2
:local:
:backlinks: entry
.. sidebar:: info
Initial sponsored by `Search and Discovery Fund
<https://nlnet.nl/discovery>`_ of `NLnet Foundation <https://nlnet.nl/>`_.
With the *SQL engines* you can bind SQL databases into SearXNG. The following
Relational Database Management System (RDBMS) are supported:
- :ref:`engine sqlite`
- :ref:`engine postgresql`
- :ref:`engine mysql_server`
All of the engines above are just commented out in the :origin:`settings.yml
<searx/settings.yml>`, as you have to set the required attributes for the
engines, e.g. ``database:`` ...
.. code:: yaml
- name: ...
engine: {sqlite|postgresql|mysql_server}
database: ...
result_template: {template_name}
query_str: ...
By default, the engines use the ``key-value`` template for displaying results /
see :origin:`simple <searx/templates/simple/result_templates/key-value.html>`
theme. If you are not satisfied with the original result layout, you can use
your own template, set ``result_template`` attribute to ``{template_name}`` and
place the templates at::
searx/templates/{theme_name}/result_templates/{template_name}
If you do not wish to expose these engines on a public instance, you can still
add them and limit the access by setting ``tokens`` as described in section
:ref:`private engines`.
Extra Dependencies
==================
For using :ref:`engine postgresql` or :ref:`engine mysql_server` you need to
install additional packages in Python's Virtual Environment of your SearXNG
instance. To switch into the environment (:ref:`searxng-src`) you can use
:ref:`searxng.sh`::
$ sudo utils/searxng.sh instance cmd bash
(searxng-pyenv)$ pip install ...
Configure the engines
=====================
The configuration of the new database engines are similar. You must put a valid
SQL-SELECT query in ``query_str``. At the moment you can only bind at most one
parameter in your query. By setting the attribute ``limit`` you can define how
many results you want from the SQL server. Basically, it is the same as the
``LIMIT`` keyword in SQL.
Please, do not include ``LIMIT`` or ``OFFSET`` in your SQL query as the engines
rely on these keywords during paging. If you want to configure the number of
returned results use the option ``limit``.
.. _engine sqlite:
SQLite
------
.. sidebar:: info
- :origin:`sqlite.py <searx/engines/sqlite.py>`
.. automodule:: searx.engines.sqlite
:members:
.. _engine postgresql:
PostgreSQL
----------
.. _psycopg2: https://www.psycopg.org/install
.. sidebar:: info
- :origin:`postgresql.py <searx/engines/postgresql.py>`
- ``pip install`` `psycopg2-binary <psycopg2>`_
.. automodule:: searx.engines.postgresql
:members:
.. _engine mysql_server:
MySQL
-----
.. sidebar:: info
- :origin:`mysql_server.py <searx/engines/mysql_server.py>`
- ``pip install`` :pypi:`mysql-connector-python <mysql-connector-python>`
.. automodule:: searx.engines.mysql_server
:members:

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===============
Offline Concept
===============
.. sidebar:: offline engines
- :ref:`demo offline engine`
- :ref:`engine command`
- :ref:`sql engines`
- :ref:`nosql engines`
- :py:obj:`searx.search.processors.offline`
To extend the functionality of SearXNG, offline engines are going to be
introduced. An offline engine is an engine which does not need Internet
connection to perform a search and does not use HTTP to communicate.
Offline engines can be configured, by adding those to the `engines` list of
:origin:`settings.yml <searx/settings.yml>`. An example skeleton for offline
engines can be found in :ref:`demo offline engine` (:origin:`demo_offline.py
<searx/engines/demo_offline.py>`).
Programming Interface
=====================
:py:func:`init(engine_settings=None) <searx.engines.demo_offline.init>`
All offline engines can have their own init function to setup the engine before
accepting requests. The function gets the settings from settings.yml as a
parameter. This function can be omitted, if there is no need to setup anything
in advance.
:py:func:`search(query, params) <searx.engines.demo_offline.searc>`
Each offline engine has a function named ``search``. This function is
responsible to perform a search and return the results in a presentable
format. (Where *presentable* means presentable by the selected result
template.)
The return value is a list of results retrieved by the engine.
Engine representation in ``/config``
If an engine is offline, the attribute ``offline`` is set to ``True``.
.. _offline requirements:
Extra Dependencies
==================
If an offline engine depends on an external tool, SearXNG does not install it by
default. When an administrator configures such engine and starts the instance,
the process returns an error with the list of missing dependencies. Also,
required dependencies will be added to the comment/description of the engine, so
admins can install packages in advance.
If there is a need to install additional packages in *Python's Virtual
Environment* of your SearXNG instance you need to switch into the environment
(:ref:`searxng-src`) first, for this you can use :ref:`searxng.sh`::
$ sudo utils/searxng.sh instance cmd bash
(searxng-pyenv)$ pip install ...
Private engines (Security)
==========================
To limit the access to offline engines, if an instance is available publicly,
administrators can set token(s) for each of the :ref:`private engines`. If a
query contains a valid token, then SearXNG performs the requested private
search. If not, requests from an offline engines return errors.

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.. _annas_archive engine:
==============
Anna's Archive
==============
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.annas_archive
:members:

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.. _archlinux engine:
==========
Arch Linux
==========
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.archlinux
:members:

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.. _bing engines:
============
Bing Engines
============
.. contents::
:depth: 2
:local:
:backlinks: entry
.. _bing web engine:
Bing WEB
========
.. automodule:: searx.engines.bing
:members:
.. _bing images engine:
Bing Images
===========
.. automodule:: searx.engines.bing_images
:members:
.. _bing videos engine:
Bing Videos
===========
.. automodule:: searx.engines.bing_videos
:members:
.. _bing news engine:
Bing News
=========
.. automodule:: searx.engines.bing_news
:members:

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.. _bpb engine:
===
Bpb
===
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.bpb
:members:

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.. _brave engine:
=============
Brave Engines
=============
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.brave
:members:

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.. _bt4g engine:
====
BT4G
====
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.bt4g
:members:

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.. _dailymotion engine:
===========
Dailymotion
===========
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.dailymotion
:members:

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.. _duckduckgo engines:
==================
DuckDuckGo Engines
==================
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.duckduckgo
:members:
.. automodule:: searx.engines.duckduckgo_extra
:members:
.. automodule:: searx.engines.duckduckgo_definitions
:members:
.. automodule:: searx.engines.duckduckgo_weather
:members:

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.. _google engines:
==============
Google Engines
==============
.. contents::
:depth: 2
:local:
:backlinks: entry
.. _google API:
Google API
==========
.. _Query Parameter Definitions:
https://developers.google.com/custom-search/docs/xml_results#WebSearch_Query_Parameter_Definitions
SearXNG's implementation of the Google API is mainly done in
:py:obj:`get_google_info <searx.engines.google.get_google_info>`.
For detailed description of the *REST-full* API see: `Query Parameter
Definitions`_. The linked API documentation can sometimes be helpful during
reverse engineering. However, we cannot use it in the freely accessible WEB
services; not all parameters can be applied and some engines are more *special*
than other (e.g. :ref:`google news engine`).
.. _google web engine:
Google WEB
==========
.. automodule:: searx.engines.google
:members:
.. _google autocomplete:
Google Autocomplete
====================
.. autofunction:: searx.autocomplete.google_complete
.. _google images engine:
Google Images
=============
.. automodule:: searx.engines.google_images
:members:
.. _google videos engine:
Google Videos
=============
.. automodule:: searx.engines.google_videos
:members:
.. _google news engine:
Google News
===========
.. automodule:: searx.engines.google_news
:members:
.. _google scholar engine:
Google Scholar
==============
.. automodule:: searx.engines.google_scholar
:members:

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.. _lemmy engine:
=====
Lemmy
=====
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.lemmy
:members:

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.. _loc engine:
===================
Library of Congress
===================
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.loc
:members:

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.. _mastodon engine:
========
Mastodon
========
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.mastodon
:members:

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.. _moviepilot engine:
==========
Moviepilot
==========
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.moviepilot
:members:

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.. _mrs engine:
=========================
Matrix Rooms Search (MRS)
=========================
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.mrs
:members:

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.. _Mwmbl engine:
============
Mwmbl Engine
============
.. contents::
:depth: 2
:local:
:backlinks: entry
.. _mwmbl web engine:
Mwmbl WEB
=========
.. automodule:: searx.engines.mwmbl
:members:
.. _mwmbl autocomplete:
Mwmbl Autocomplete
==================
.. autofunction:: searx.autocomplete.mwmbl

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.. _odysee engine:
======
Odysee
======
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.odysee
:members:

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.. _peertube engines:
================
Peertube Engines
================
.. contents::
:depth: 2
:local:
:backlinks: entry
.. _peertube video engine:
Peertube Video
==============
.. automodule:: searx.engines.peertube
:members:
.. _sepiasearch engine:
SepiaSearch
===========
.. automodule:: searx.engines.sepiasearch
:members:

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.. _piped engine:
=====
Piped
=====
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.piped
:members:

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.. _qwant engine:
=====
Qwant
=====
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.qwant
:members:

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.. _RadioBrowser engine:
============
RadioBrowser
============
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.radio_browser
:members:

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.. _engine recoll:
=============
Recoll Engine
=============
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.recoll
:members:

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.. _seekr engine:
=============
Seekr Engines
=============
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.seekr
:members:

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.. _startpage engines:
=================
Startpage Engines
=================
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.startpage
:members:

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.. _tagesschau engine:
==============
Tagesschau API
==============
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.tagesschau
:members:

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.. _torznab engine:
==============
Torznab WebAPI
==============
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.torznab
:members:

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.. _wallhaven engine:
=========
Wallhaven
=========
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.wallhaven
:members:

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.. _wikimedia engines:
=========
Wikimedia
=========
.. contents::
:depth: 2
:local:
:backlinks: entry
.. _wikipedia engine:
Wikipedia
=========
.. automodule:: searx.engines.wikipedia
:members:
.. _wikidata engine:
Wikidata
=========
.. automodule:: searx.engines.wikidata
:members:

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.. _yacy engine:
====
Yacy
====
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.yacy
:members:

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.. _yahoo engine:
============
Yahoo Engine
============
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.yahoo
:members:

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.. _zlibrary engine:
=========
Z-Library
=========
.. contents:: Contents
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.zlibrary
:members:

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.. _tineye engine:
======
Tineye
======
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.tineye
:members:

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.. _xpath engine:
============
XPath Engine
============
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.engines.xpath
:members:

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=======================
Developer documentation
=======================
.. toctree::
:maxdepth: 2
quickstart
rtm_asdf
contribution_guide
engines/index
search_api
plugins
translation
lxcdev
makefile
reST
searxng_extra/index

438
_sources/dev/lxcdev.rst.txt Normal file
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.. _lxcdev:
==============================
Developing in Linux Containers
==============================
.. _LXC: https://linuxcontainers.org/lxc/introduction/
In this article we will show, how you can make use of Linux Containers (LXC_) in
*distributed and heterogeneous development cycles* (TL;DR; jump to the
:ref:`lxcdev summary`).
.. sidebar:: Audience
This blog post is written for experienced admins and developers. Readers
should have a serious meaning about the terms: *distributed*, *merge* and
*linux container*.
**hint**
If you have issues with the internet connectivity of your containers read
section :ref:`internet connectivity docker`.
.. contents::
:depth: 2
:local:
:backlinks: entry
Motivation
==========
Most often in our development cycle, we edit the sources and run some test
and/or builds by using ``make`` :ref:`[ref] <makefile>` before we commit. This
cycle is simple and perfect but might fail in some aspects we should not
overlook.
**The environment in which we run all our development processes matters!**
The :ref:`makefile` and the :ref:`make install` encapsulate a lot for us, but
these tools do not have access to all prerequisites. For example, there may
have dependencies on packages that are installed on developer's desktop, but
usually are not preinstalled on a server or client system. Another example is;
settings have been made to the software on developer's desktop that would never
be set on a *production* system.
**Linux Containers are isolate environments**, we use them to not mix up all
the prerequisites from various projects on developer's desktop.
The scripts from :ref:`searx_utils` can divide in those to install and maintain
software
- :ref:`searxng.sh`
and the script
- :ref:`lxc.sh`
with we can scale our installation, maintenance or even development tasks over a
stack of isolated containers / what we call the:
- :ref:`searxng lxc suite`
.. _lxcdev install searxng:
Gentlemen, start your engines!
==============================
.. _LXD: https://linuxcontainers.org/lxd/introduction/
.. _archlinux: https://www.archlinux.org/
Before you can start with containers, you need to install and initiate LXD_
once:
.. tabs::
.. group-tab:: desktop (HOST)
.. code:: bash
$ snap install lxd
$ lxd init --auto
And you need to clone from origin or if you have your own fork, clone from your
fork:
.. tabs::
.. group-tab:: desktop (HOST)
.. code:: bash
$ cd ~/Downloads
$ git clone https://github.com/searxng/searxng.git searxng
$ cd searxng
.. sidebar:: The ``searxng-archlinux`` container
is the base of all our exercises here.
The :ref:`lxc-searxng.env` consists of several images, see ``export
LXC_SUITE=(...`` near by :origin:`utils/lxc-searxng.env#L19`.
For this blog post we exercise on a archlinux_ image. The container of this
image is named ``searxng-archlinux``.
Lets build the container, but be sure that this container does not already
exists, so first lets remove possible old one:
.. tabs::
.. group-tab:: desktop (HOST)
.. code:: bash
$ sudo -H ./utils/lxc.sh remove searxng-archlinux
$ sudo -H ./utils/lxc.sh build searxng-archlinux
.. sidebar:: further read
- :ref:`lxc.sh install suite`
- :ref:`installation nginx`
To install the complete :ref:`SearXNG suite <searxng lxc suite>` and the HTTP
proxy :ref:`installation nginx` into the archlinux container run:
.. tabs::
.. group-tab:: desktop (HOST)
.. code:: bash
$ sudo -H ./utils/lxc.sh install suite searxng-archlinux
$ sudo -H ./utils/lxc.sh cmd -- FORCE_TIMEOUT=0 ./utils/searxng.sh install nginx
$ sudo ./utils/lxc.sh show suite | grep SEARXNG_URL
...
[searxng-archlinux] SEARXNG_URL : http://n.n.n.140/searxng
.. sidebar:: Fully functional SearXNG suite
From here on you have a fully functional SearXNG suite (including a
:ref:`redis db`).
In such a SearXNG suite admins can maintain and access the debug log of the
services quite easy.
In the example above the SearXNG instance in the container is wrapped to
``http://n.n.n.140/searxng`` to the HOST system. Note, on your HOST system, the
IP of your ``searxng-archlinux`` container is different to this example. To
test the instance in the container from outside of the container, in your WEB
browser on your desktop just open the URL reported in your installation
.. _working in containers:
In containers, work as usual
============================
Usually you open a root-bash using ``sudo -H bash``. In case of LXC containers
open the root-bash in the container is done by the ``./utils/lxc.sh cmd
searxng-archlinux`` command:
.. tabs::
.. group-tab:: desktop (HOST)
.. code:: bash
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux bash
INFO: [searxng-archlinux] bash
[root@searxng-archlinux SearXNG]$
The prompt ``[root@searxng-archlinux ...]`` signals, that you are the root user
in the container (GUEST). To debug the running SearXNG instance use:
.. tabs::
.. group-tab:: ``[root@searxng-archlinux SearXNG]`` (GUEST)
.. code:: bash
$ ./utils/searxng.sh instance inspect
...
use [CTRL-C] to stop monitoring the log
...
.. group-tab:: desktop (HOST)
.. code:: bash
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux ./utils/searxng.sh instance inspect
...
use [CTRL-C] to stop monitoring the log
...
Back in the browser on your desktop open the service http://n.n.n.140/searxng
and run your application tests while the debug log is shown in the terminal from
above. You can stop monitoring using ``CTRL-C``, this also disables the *"debug
option"* in SearXNG's settings file and restarts the SearXNG uwsgi application.
Another point we have to notice is that the service :ref:`SearXNG <searxng.sh>`
runs under dedicated system user account with the same name (compare
:ref:`create searxng user`). To get a login shell from these accounts, simply
call:
.. tabs::
.. group-tab:: ``[root@searxng-archlinux SearXNG]`` (GUEST)
.. code:: bash
$ ./utils/searxng.sh instance cmd bash -l
(searx-pyenv) [searxng@searxng-archlinux ~]$ pwd
/usr/local/searxng
.. group-tab:: desktop (HOST)
.. code:: bash
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux ./utils/searxng.sh instance cmd bash -l
INFO: [searxng-archlinux] ./utils/searxng.sh instance cmd bash -l
(searx-pyenv) [searxng@searxng-archlinux ~]$ pwd
/usr/local/searxng
The prompt ``[searxng@searxng-archlinux]`` signals that you are logged in as system
user ``searxng`` in the ``searxng-archlinux`` container and the python *virtualenv*
``(searxng-pyenv)`` environment is activated.
Wrap production into developer suite
====================================
In this section we will see how to change the *"Fully functional SearXNG suite"*
from a LXC container (which is quite ready for production) into a developer
suite. For this, we have to keep an eye on the :ref:`installation basic`:
- SearXNG setup in: ``/etc/searxng/settings.yml``
- SearXNG user's home: ``/usr/local/searxng``
- virtualenv in: ``/usr/local/searxng/searxng-pyenv``
- SearXNG software in: ``/usr/local/searxng/searxng-src``
With the use of the :ref:`searxng.sh` the SearXNG service was installed as
:ref:`uWSGI application <searxng uwsgi>`. To maintain this service, we can use
``systemctl`` (compare :ref:`uWSGI maintenance`).
.. tabs::
.. group-tab:: uwsgi@searxng
.. code:: bash
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux systemctl stop uwsgi@searxng
With the command above, we stopped the SearXNG uWSGI-App in the archlinux
container.
The uWSGI-App for the archlinux distros is configured in
:origin:`utils/templates/etc/uwsgi/apps-archlinux/searxng.ini`, from where at
least you should attend the settings of ``uid``, ``chdir``, ``env`` and
``http``::
env = SEARXNG_SETTINGS_PATH=/etc/searxng/settings.yml
http = 127.0.0.1:8888
chdir = /usr/local/searxng/searxng-src/searx
virtualenv = /usr/local/searxng/searxng-pyenv
pythonpath = /usr/local/searxng/searxng-src
If you have read the :ref:`Good to know` you remember, that each container
shares the root folder of the repository and the command ``utils/lxc.sh cmd``
handles relative path names **transparent**.
To wrap the SearXNG installation in the container into a developer one, we
simple have to create a symlink to the **transparent** repository from the
desktop. Now lets replace the repository at ``searxng-src`` in the container
with the working tree from outside of the container:
.. tabs::
.. group-tab:: ``[root@searxng-archlinux SearXNG]`` (GUEST)
.. code:: bash
$ mv /usr/local/searxng/searxng-src /usr/local/searxng/searxng-src.old
$ ln -s /share/SearXNG/ /usr/local/searxng/searxng-src
.. group-tab:: desktop (HOST)
.. code:: bash
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux \
mv /usr/local/searxng/searxng-src /usr/local/searxng/searxng-src.old
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux \
ln -s /share/SearXNG/ /usr/local/searxng/searxng-src
Now we can develop as usual in the working tree of our desktop system. Every
time the software was changed, you have to restart the SearXNG service (in the
container):
.. tabs::
.. group-tab:: uwsgi@searxng
.. code:: bash
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux systemctl restart uwsgi@searxng
Remember: :ref:`working in containers` .. here are just some examples from my
daily usage:
To *inspect* the SearXNG instance (already described above):
.. tabs::
.. group-tab:: ``[root@searxng-archlinux SearXNG]`` (GUEST)
.. code:: bash
$ ./utils/searx.sh inspect service
.. group-tab:: desktop (HOST)
.. code:: bash
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux ./utils/searx.sh inspect service
Run :ref:`makefile`, e.g. to test inside the container:
.. tabs::
.. group-tab:: ``[root@searxng-archlinux SearXNG]`` (GUEST)
.. code:: bash
$ make test
.. group-tab:: desktop (HOST)
.. code:: bash
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux make test
To install all prerequisites needed for a :ref:`buildhosts`:
.. tabs::
.. group-tab:: ``[root@searxng-archlinux SearXNG]`` (GUEST)
.. code:: bash
$ ./utils/searxng.sh install buildhost
.. group-tab:: desktop (HOST)
.. code:: bash
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux ./utils/searxng.sh install buildhost
To build the docs on a buildhost :ref:`buildhosts`:
.. tabs::
.. group-tab:: ``[root@searxng-archlinux SearXNG]`` (GUEST)
.. code:: bash
$ make docs.html
.. group-tab:: desktop (HOST)
.. code:: bash
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux make docs.html
.. _lxcdev summary:
Summary
=======
We build up a fully functional SearXNG suite in a archlinux container:
.. code:: bash
$ sudo -H ./utils/lxc.sh build searxng-archlinux
$ sudo -H ./utils/lxc.sh install suite searxng-archlinux
...
Developer install? (wraps source from HOST into the running instance) [YES/no]
To wrap the suite into a developer one answer ``YES`` (or press Enter).
.. code:: text
link SearXNG's sources to: /share/SearXNG
=========================================
mv -f "/usr/local/searxng/searxng-src" "/usr/local/searxng/searxng-src.backup"
ln -s "/share/SearXNG" "/usr/local/searxng/searxng-src"
ls -ld /usr/local/searxng/searxng-src
|searxng| lrwxrwxrwx 1 searxng searxng ... /usr/local/searxng/searxng-src -> /share/SearXNG
On code modification the instance has to be restarted (see :ref:`uWSGI
maintenance`):
.. code:: bash
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux systemctl restart uwsgi@searxng
To access HTTP from the desktop we installed nginx for the services inside the
container:
.. code:: bash
$ sudo -H ./utils/lxc.sh cmd -- FORCE_TIMEOUT=0 ./utils/searxng.sh install nginx
To get information about the SearxNG suite in the archlinux container we can
use:
.. code:: text
$ sudo -H ./utils/lxc.sh show suite searxng-archlinux
[searxng-archlinux] INFO: (eth0) docs-live: http:///n.n.n.140:8080/
[searxng-archlinux] INFO: (eth0) IPv6: http://[fd42:555b:2af9:e121:216:3eff:fe5b:1744]
[searxng-archlinux] uWSGI:
[searxng-archlinux] SEARXNG_UWSGI_SOCKET : /usr/local/searxng/run/socket
[searxng-archlinux] environment /usr/local/searxng/searxng-src/utils/brand.env:
[searxng-archlinux] GIT_URL : https://github.com/searxng/searxng
[searxng-archlinux] GIT_BRANCH : master
[searxng-archlinux] SEARXNG_URL : http:///n.n.n.140/searxng
[searxng-archlinux] SEARXNG_PORT : 8888
[searxng-archlinux] SEARXNG_BIND_ADDRESS : 127.0.0.1

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.. _makefile:
=======================
Makefile & ``./manage``
=======================
.. _gnu-make: https://www.gnu.org/software/make/manual/make.html#Introduction
All relevant build and development tasks are implemented in the
:origin:`./manage <manage>` script and for CI or IDE integration a small
:origin:`Makefile` wrapper is available. If you are not familiar with
Makefiles, we recommend to read gnu-make_ introduction.
.. sidebar:: build environment
Before looking deeper at the targets, first read about :ref:`make
install`.
To install developer requirements follow :ref:`buildhosts`.
.. contents::
:depth: 2
:local:
:backlinks: entry
The usage is simple, just type ``make {target-name}`` to *build* a target.
Calling the ``help`` target gives a first overview (``make help``):
.. tabs::
.. group-tab:: ``make``
.. program-output:: bash -c "cd ..; make --no-print-directory help"
.. group-tab:: ``./manage``
The Makefile targets are implemented for comfort, if you can do without
tab-completion and need to have a more granular control, use
:origin:`manage` without the Makefile wrappers.
.. code:: sh
$ ./manage help
.. _make install:
Python environment (``make install``)
=====================================
.. sidebar:: activate environment
``source ./local/py3/bin/activate``
We do no longer need to build up the virtualenv manually. Jump into your git
working tree and release a ``make install`` to get a virtualenv with a
*developer install* of SearXNG (:origin:`setup.py`). ::
$ cd ~/searxng-clone
$ make install
PYENV [virtualenv] installing ./requirements*.txt into local/py3
...
PYENV OK
PYENV [install] pip install -e 'searx[test]'
...
Successfully installed argparse-1.4.0 searx
BUILDENV INFO:searx:load the default settings from ./searx/settings.yml
BUILDENV INFO:searx:Initialisation done
BUILDENV build utils/brand.env
If you release ``make install`` multiple times the installation will only
rebuild if the sha256 sum of the *requirement files* fails. With other words:
the check fails if you edit the requirements listed in
:origin:`requirements-dev.txt` and :origin:`requirements.txt`). ::
$ make install
PYENV OK
PYENV [virtualenv] requirements.sha256 failed
[virtualenv] - 6cea6eb6def9e14a18bf32f8a3e... ./requirements-dev.txt
[virtualenv] - 471efef6c73558e391c3adb35f4... ./requirements.txt
...
PYENV [virtualenv] installing ./requirements*.txt into local/py3
...
PYENV OK
PYENV [install] pip install -e 'searx[test]'
...
Successfully installed argparse-1.4.0 searx
BUILDENV INFO:searx:load the default settings from ./searx/settings.yml
BUILDENV INFO:searx:Initialisation done
BUILDENV build utils/brand.env
.. sidebar:: drop environment
To get rid of the existing environment before re-build use :ref:`clean target
<make clean>` first.
If you think, something goes wrong with your ./local environment or you change
the :origin:`setup.py` file, you have to call :ref:`make clean`.
.. _make buildenv:
``make buildenv``
=================
Rebuild instance's environment with the modified settings from the
:ref:`settings brand` and :ref:`settings server` section of your
:ref:`settings.yml <settings location>`.
What is the :origin:`utils/brand.env` needed for and why do you need to rebuild
it if necessary?
Short answer: :ref:`installation and maintenance <searxng maintenance>`
scripts are running outside of instance's runtime environment and need some
values defined in the runtime environment.
All the SearXNG setups are centralized in the :ref:`settings.yml` file. This
setup is available as long we are in a *installed instance*. E.g. the
*installed instance* on the server or the *installed developer instance* at
``./local`` (the later one is created by a :ref:`make install <make install>` or
:ref:`make run <make run>`).
Tasks running outside of an *installed instance*, especially :ref:`installation
and maintenance <searxng maintenance>` tasks running at (pre-) installation time
do not have access to the SearXNG setup (from a *installed instance*). Those
tasks need a *build environment*.
The ``make buildenv`` target will update the *build environment* in:
- :origin:`utils/brand.env`
Tasks running outside of an *installed instance*, need the following settings
from the YAML configuration:
- ``SEARXNG_URL`` from :ref:`server.base_url <settings server>` (aka
``PUBLIC_URL``)
- ``SEARXNG_BIND_ADDRESS`` from :ref:`server.bind_address <settings server>`
- ``SEARXNG_PORT`` from :ref:`server.port <settings server>`
The ``GIT_URL`` and ``GIT_BRANCH`` in the origin:`utils/brand.env` file, are
read from the git VCS and the branch that is checked out when ``make
buildenv`` command runs.
.. _brand:
**I would like to create my own brand, how should I proceed?**
Create a remote branch (``example.org``), checkout the remote branch (on your
local developer desktop) and in the :origin:`searx/settings.yml` file in the
:ref:`settings server` section set ``base_url``. Run ``make buildenv`` and
create a commit for your brand.
On your server you clone the branch (``example.org``) into your HOME folder
``~`` from where you run the :ref:`installation <installation>` and
:ref:`maintenance <searxng maintenance>` task.
To upgrade you brand, rebase on SearXNG's master branch (on your local
developer desktop), force push it to your remote branch. Go to your server, do
a force pull and run :ref:`sudo -H ./utils/searxng.sh instance update <update
searxng>`.
.. _make node.env:
Node.js environment (``make node.env``)
=======================================
.. _Node.js: https://nodejs.org/
.. _nvm: https://github.com/nvm-sh
.. _npm: https://www.npmjs.com/
.. jinja:: searx
Node.js_ version {{version.node}} or higher is required to build the themes.
If the requirement is not met, the build chain uses nvm_ (Node Version
Manager) to install latest LTS of Node.js_ locally: there is no need to
install nvm_ or npm_ on your system.
To install NVM_ and Node.js_ in once you can use :ref:`make nvm.nodejs`.
.. _make nvm:
NVM ``make nvm.install nvm.status``
-----------------------------------
Use ``make nvm.status`` to get the current status of your Node.js_ and nvm_
setup.
.. tabs::
.. group-tab:: nvm.install
.. code:: sh
$ LANG=C make nvm.install
INFO: install (update) NVM at ./searxng/.nvm
INFO: clone: https://github.com/nvm-sh/nvm.git
|| Cloning into './searxng/.nvm'...
INFO: checkout v0.39.4
|| HEAD is now at 8fbf8ab v0.39.4
.. group-tab:: nvm.status (ubu2004)
Here is the output you will typically get on a Ubuntu 20.04 system which
serves only a `no longer active <https://nodejs.org/en/about/releases/>`_
Release `Node.js v10.19.0 <https://packages.ubuntu.com/focal/nodejs>`_.
.. code:: sh
$ make nvm.status
INFO: Node.js is installed at /usr/bin/node
INFO: Node.js is version v10.19.0
WARN: minimal Node.js version is 16.13.0
INFO: npm is installed at /usr/bin/npm
INFO: npm is version 6.14.4
WARN: NVM is not installed
.. _make nvm.nodejs:
``make nvm.nodejs``
-------------------
Install latest Node.js_ LTS locally (uses nvm_)::
$ make nvm.nodejs
INFO: install (update) NVM at /share/searxng/.nvm
INFO: clone: https://github.com/nvm-sh/nvm.git
...
Downloading and installing node v16.13.0...
...
INFO: Node.js is installed at searxng/.nvm/versions/node/v16.13.0/bin/node
INFO: Node.js is version v16.13.0
INFO: npm is installed at searxng/.nvm/versions/node/v16.13.0/bin/npm
INFO: npm is version 8.1.0
INFO: NVM is installed at searxng/.nvm
.. _make run:
``make run``
============
To get up a running a developer instance simply call ``make run``. This enables
*debug* option in :origin:`searx/settings.yml`, starts a ``./searx/webapp.py``
instance and opens the URL in your favorite WEB browser (:man:`xdg-open`)::
$ make run
Changes to theme's HTML templates (jinja2) are instant. Changes to the CSS & JS
sources of the theme need to be rebuild. You can do that by running::
$ make themes.all
Alternatively to ``themes.all`` you can run *live builds* of the theme you are
modify (:ref:`make themes`)::
$ LIVE_THEME=simple make run
.. _make format.python:
``make format.python``
======================
Format Python source code using `Black code style`_. See ``$BLACK_OPTIONS``
and ``$BLACK_TARGETS`` in :origin:`Makefile`.
.. attention::
We stuck at Black 22.12.0, please read comment in PR `Bump black from 22.12.0
to 23.1.0`_
.. _Bump black from 22.12.0 to 23.1.0:
https://github.com/searxng/searxng/pull/2159#pullrequestreview-1284094735
.. _Black code style:
https://black.readthedocs.io/en/stable/the_black_code_style/current_style.html
.. _make clean:
``make clean``
==============
Drops all intermediate files, all builds, but keep sources untouched. Before
calling ``make clean`` stop all processes using the :ref:`make install` or
:ref:`make node.env`. ::
$ make clean
CLEAN pyenv
PYENV [virtualenv] drop local/py3
CLEAN docs -- build/docs dist/docs
CLEAN themes -- locally installed npm dependencies
...
CLEAN test stuff
CLEAN common files
.. _make docs:
``make docs``
=============
Target ``docs`` builds the documentation:
.. code:: bash
$ make docs
HTML ./docs --> file://
DOCS build build/docs/includes
...
The HTML pages are in dist/docs.
.. _make docs.clean:
``make docs.clean docs.live``
----------------------------------
We describe the usage of the ``doc.*`` targets in the :ref:`How to contribute /
Documentation <contrib docs>` section. If you want to edit the documentation
read our :ref:`make docs.live` section. If you are working in your own brand,
adjust your :ref:`settings brand`.
.. _make docs.gh-pages:
``make docs.gh-pages``
----------------------
To deploy on github.io first adjust your :ref:`settings brand`. For any
further read :ref:`deploy on github.io`.
.. _make test:
``make test``
=============
Runs a series of tests: :ref:`make test.pylint`, ``test.pep8``, ``test.unit``
and ``test.robot``. You can run tests selective, e.g.::
$ make test.pep8 test.unit test.shell
TEST test.pep8 OK
...
TEST test.unit OK
...
TEST test.shell OK
.. _make test.shell:
``make test.shell``
-------------------
:ref:`sh lint` / if you have changed some bash scripting run this test before
commit.
.. _make test.pylint:
``make test.pylint``
--------------------
.. _Pylint: https://www.pylint.org/
Pylint_ is known as one of the best source-code, bug and quality checker for the
Python programming language. The pylint profile used in the SearXNG project is
found in project's root folder :origin:`.pylintrc`.
.. _make search.checker:
``make search.checker.{engine name}``
=====================================
To check all engines::
make search.checker
To check a engine with whitespace in the name like *google news* replace space
by underline::
make search.checker.google_news
To see HTTP requests and more use SEARXNG_DEBUG::
make SEARXNG_DEBUG=1 search.checker.google_news
.. _3xx: https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#3xx_redirection
To filter out HTTP redirects (3xx_)::
make SEARXNG_DEBUG=1 search.checker.google_news | grep -A1 "HTTP/1.1\" 3[0-9][0-9]"
...
Engine google news Checking
https://news.google.com:443 "GET /search?q=life&hl=en&lr=lang_en&ie=utf8&oe=utf8&ceid=US%3Aen&gl=US HTTP/1.1" 302 0
https://news.google.com:443 "GET /search?q=life&hl=en-US&lr=lang_en&ie=utf8&oe=utf8&ceid=US:en&gl=US HTTP/1.1" 200 None
--
https://news.google.com:443 "GET /search?q=computer&hl=en&lr=lang_en&ie=utf8&oe=utf8&ceid=US%3Aen&gl=US HTTP/1.1" 302 0
https://news.google.com:443 "GET /search?q=computer&hl=en-US&lr=lang_en&ie=utf8&oe=utf8&ceid=US:en&gl=US HTTP/1.1" 200 None
--
.. _make themes:
``make themes.*``
=================
.. sidebar:: further read
- :ref:`devquickstart`
The :origin:`Makefile` targets ``make theme.*`` cover common tasks to build the
theme(s). The ``./manage themes.*`` command line can be used to convenient run
common theme build tasks.
.. program-output:: bash -c "cd ..; ./manage themes.help"
To get live builds while modifying CSS & JS use (:ref:`make run`):
.. code:: sh
$ LIVE_THEME=simple make run
.. _make static.build:
``make static.build.*``
=======================
.. sidebar:: further read
- :ref:`devquickstart`
The :origin:`Makefile` targets ``static.build.*`` cover common tasks to build (a
commit of) the static files. The ``./manage static.build..*`` command line
can be used to convenient run common build tasks of the static files.
.. program-output:: bash -c "cd ..; ./manage static.help"
.. _manage redis.help:
``./manage redis.help``
=======================
The ``./manage redis.*`` command line can be used to convenient run common Redis
tasks (:ref:`Redis developer notes`).
.. program-output:: bash -c "cd ..; ./manage redis.help"
.. _manage go.help:
``./manage go.help``
====================
The ``./manage go.*`` command line can be used to convenient run common `go
(wiki)`_ tasks.
.. _go (wiki): https://en.wikipedia.org/wiki/Go_(programming_language)
.. program-output:: bash -c "cd ..; ./manage go.help"

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.. _dev plugin:
=======
Plugins
=======
.. sidebar:: Further reading ..
- :ref:`plugins generic`
Plugins can extend or replace functionality of various components of searx.
Example plugin
==============
.. code:: python
name = 'Example plugin'
description = 'This plugin extends the suggestions with the word "example"'
default_on = False # disabled by default
# attach callback to the post search hook
# request: flask request object
# ctx: the whole local context of the post search hook
def post_search(request, search):
search.result_container.suggestions.add('example')
return True
External plugins
================
SearXNG supports *external plugins* / there is no need to install one, SearXNG
runs out of the box. But to demonstrate; in the example below we install the
SearXNG plugins from *The Green Web Foundation* `[ref]
<https://www.thegreenwebfoundation.org/news/searching-the-green-web-with-searx/>`__:
.. code:: bash
$ sudo utils/searxng.sh instance cmd bash -c
(searxng-pyenv)$ pip install git+https://github.com/return42/tgwf-searx-plugins
In the :ref:`settings.yml` activate the ``plugins:`` section and add module
``only_show_green_results`` from ``tgwf-searx-plugins``.
.. code:: yaml
plugins:
...
- only_show_green_results
...
Plugin entry points
===================
Entry points (hooks) define when a plugin runs. Right now only three hooks are
implemented. So feel free to implement a hook if it fits the behaviour of your
plugin. A plugin doesn't need to implement all the hooks.
.. py:function:: pre_search(request, search) -> bool
Runs BEFORE the search request.
`search.result_container` can be changed.
Return a boolean:
* True to continue the search
* False to stop the search
:param flask.request request:
:param searx.search.SearchWithPlugins search:
:return: False to stop the search
:rtype: bool
.. py:function:: post_search(request, search) -> None
Runs AFTER the search request.
:param flask.request request: Flask request.
:param searx.search.SearchWithPlugins search: Context.
.. py:function:: on_result(request, search, result) -> bool
Runs for each result of each engine.
`result` can be changed.
If `result["url"]` is defined, then `result["parsed_url"] = urlparse(result['url'])`
.. warning::
`result["url"]` can be changed, but `result["parsed_url"]` must be updated too.
Return a boolean:
* True to keep the result
* False to remove the result
:param flask.request request:
:param searx.search.SearchWithPlugins search:
:param typing.Dict result: Result, see - :ref:`engine results`
:return: True to keep the result
:rtype: bool

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.. _devquickstart:
======================
Development Quickstart
======================
.. _npm: https://www.npmjs.com/
.. _Node.js: https://nodejs.org/
.. sidebar:: further read
- :ref:`makefile`
- :ref:`buildhosts`
SearXNG loves developers; Developers do not need to worry about tool chains, the
usual developer tasks can be comfortably executed via :ref:`make <makefile>`.
Don't hesitate, just clone SearXNG's sources and start hacking right now ..
.. code:: bash
git clone https://github.com/searxng/searxng.git searxng
Here is how a minimal workflow looks like:
1. *start* hacking
2. *run* your code: :ref:`make run`
3. *format & test* your code: :ref:`make format.python` and :ref:`make test`
If you think at some point something fails, go back to *start*. Otherwise,
choose a meaningful commit message and we are happy to receive your pull
request. To not end in *wild west* we have some directives, please pay attention
to our ":ref:`how to contribute`" guideline.
.. sidebar:: further read
- :ref:`make nvm`
- :ref:`make themes`
If you implement themes, you will need to setup a :ref:`Node.js environment
<make node.env>`: ``make node.env``
Before you call *make run* (2.), you need to compile the modified styles and
JavaScript: ``make themes.all``
Alternatively you can also compile selective the theme you have modified,
e.g. the *simple* theme.
.. code:: bash
make themes.simple
.. tip::
To get live builds while modifying CSS & JS use: ``LIVE_THEME=simple make run``
.. sidebar:: further read
- :ref:`make static.build`
If you finished your *tests* you can start to commit your changes. To separate
the modified source code from the build products first run:
.. code:: bash
make static.build.restore
This will restore the old build products and only your changes of the code
remain in the working tree which can now be added & committed. When all sources
are committed, you can commit the build products simply by:
.. code:: bash
make static.build.commit
Committing the build products should be the last step, just before you send us
your PR. There is also a make target to rewind this last build commit:
.. code:: bash
make static.build.drop

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==================
Runtime Management
==================
The runtimes are managed with asdf and are activated in this project via the
`.tool-versions <.tool-versions>`_. If you have not yet installed asdf_, then
chapter :ref:`introduce asdf` may be of help to you.
.. contents::
:depth: 2
:local:
:backlinks: entry
Get started
===========
If you have asdf installed you can install the runtimes of this project by:
.. code:: bash
$ cd /path/to/searxng
$ asdf install # will install runtimes listed in .tool-versions
...
Manage Versions
===============
If you want to perform a ``test`` with special runtime versions of nodejs,
python or shellcheck, you can patch the ``.tool-versions``:
.. code:: diff
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
-python 3.12.0
-shellcheck 0.9.0
+python 3.11.6
+shellcheck 0.8.0
To install use ``asdf install`` again. If the runtime tools have changed, any
existing (nodejs and python) environments should be cleaned up with a ``make
clean``.
.. code:: bash
$ asdf install
...
$ make clean test
.. _introduce asdf:
Introduce asdf
==============
To `download asdf`_ and `install asdf`_:
.. code:: bash
$ git clone https://github.com/asdf-vm/asdf.git ~/.asdf --branch <version>
$ echo '. "$HOME/.asdf/asdf.sh"' >> ~/.bashrc
$ echo '. "$HOME/.asdf/completions/asdf.bash"' >> ~/.bashrc
Start a new shell and try to `install plugins`_:
.. code:: bash
$ asdf plugin-list-all | grep -E '(golang|python|nodejs|shellcheck).git'
golang https://github.com/asdf-community/asdf-golang.git
nodejs https://github.com/asdf-vm/asdf-nodejs.git
python https://github.com/danhper/asdf-python.git
shellcheck https://github.com/luizm/asdf-shellcheck.git
$ asdf plugin add golang https://github.com/asdf-community/asdf-golang.git
$ asdf plugin add nodejs https://github.com/asdf-vm/asdf-nodejs.git
$ asdf plugin add python https://github.com/danhper/asdf-python.git
$ asdf plugin add shellcheck https://github.com/luizm/asdf-shellcheck.git
Each plugin has dependencies, to compile runtimes visit the URLs from above and
look out for the dependencies you need to install on your OS, on Debian for the
runtimes listed above you will need:
.. code:: bash
$ sudo apt update
$ sudo apt install \
dirmngr gpg curl gawk coreutils build-essential libssl-dev zlib1g-dev \
libbz2-dev libreadline-dev libsqlite3-dev \
libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev
With dependencies installed you can install/compile runtimes:
.. code:: bash
$ asdf install golang latest
$ asdf install nodejs latest
$ asdf install python latest
$ asdf install shellcheck latest
Python will be compiled and will take a while.
In the repository the version is defined in `.tool-versions`_. Outside the
repository, its recommended that the runtime should use the versions of the OS
(`Fallback to System Version`_) / if not already done register the system
versions global:
.. code:: bash
$ cd /
$ asdf global golang system
$ asdf global nodejs system
$ asdf global python system
$ asdf global shellcheck system
.. _asdf: https://asdf-vm.com/
.. _download asdf: https://asdf-vm.com/guide/getting-started.html#_2-download-asdf
.. _install asdf: https://asdf-vm.com/guide/getting-started.html#_3-install-asdf
.. _install plugins: https://asdf-vm.com/guide/getting-started.html#install-the-plugin
.. _Fallback to System Version: https://asdf-vm.com/manage/versions.html#fallback-to-system-version

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.. _search API:
==========
Search API
==========
The search supports both ``GET`` and ``POST``.
Furthermore, two endpoints ``/`` and ``/search`` are available for querying.
``GET /``
``GET /search``
Parameters
==========
.. sidebar:: Further reading ..
- :ref:`engines-dev`
- :ref:`settings.yml`
- :ref:`configured engines`
``q`` : required
The search query. This string is passed to external search services. Thus,
SearXNG supports syntax of each search service. For example, ``site:github.com
SearXNG`` is a valid query for Google. However, if simply the query above is
passed to any search engine which does not filter its results based on this
syntax, you might not get the results you wanted.
See more at :ref:`search-syntax`
``categories`` : optional
Comma separated list, specifies the active search categories (see
:ref:`configured engines`)
``engines`` : optional
Comma separated list, specifies the active search engines (see
:ref:`configured engines`).
``language`` : default from :ref:`settings search`
Code of the language.
``pageno`` : default ``1``
Search page number.
``time_range`` : optional
[ ``day``, ``month``, ``year`` ]
Time range of search for engines which support it. See if an engine supports
time range search in the preferences page of an instance.
``format`` : optional
[ ``json``, ``csv``, ``rss`` ]
Output format of results. Format needs to be activated in :ref:`settings
search`.
``results_on_new_tab`` : default ``0``
[ ``0``, ``1`` ]
Open search results on new tab.
``image_proxy`` : default from :ref:`settings server`
[ ``True``, ``False`` ]
Proxy image results through SearXNG.
``autocomplete`` : default from :ref:`settings search`
[ ``google``, ``dbpedia``, ``duckduckgo``, ``mwmbl``, ``startpage``,
``wikipedia``, ``swisscows``, ``qwant`` ]
Service which completes words as you type.
``safesearch`` : default from :ref:`settings search`
[ ``0``, ``1``, ``2`` ]
Filter search results of engines which support safe search. See if an engine
supports safe search in the preferences page of an instance.
``theme`` : default ``simple``
[ ``simple`` ]
Theme of instance.
Please note, available themes depend on an instance. It is possible that an
instance administrator deleted, created or renamed themes on their instance.
See the available options in the preferences page of the instance.
``enabled_plugins`` : optional
List of enabled plugins.
:default:
``Hash_plugin``, ``Self_Information``,
``Tracker_URL_remover``, ``Ahmia_blacklist``
:values:
.. enabled by default
``Hash_plugin``, ``Self_Information``,
``Tracker_URL_remover``, ``Ahmia_blacklist``,
.. disabled by default
``Hostname_replace``, ``Open_Access_DOI_rewrite``,
``Vim-like_hotkeys``, ``Tor_check_plugin``
``disabled_plugins``: optional
List of disabled plugins.
:default:
``Hostname_replace``, ``Open_Access_DOI_rewrite``,
``Vim-like_hotkeys``, ``Tor_check_plugin``
:values:
see values from ``enabled_plugins``
``enabled_engines`` : optional : *all* :origin:`engines <searx/engines>`
List of enabled engines.
``disabled_engines`` : optional : *all* :origin:`engines <searx/engines>`
List of disabled engines.

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.. _searxng_extra:
=============================
Tooling box ``searxng_extra``
=============================
In the folder :origin:`searxng_extra/` we maintain some tools useful for CI and
developers.
.. toctree::
:maxdepth: 2
update
standalone_searx.py

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.. _standalone_searx.py:
=====================================
``searxng_extra/standalone_searx.py``
=====================================
.. automodule:: searxng_extra.standalone_searx
:members:

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=========================
``searxng_extra/update/``
=========================
:origin:`[source] <searxng_extra/update/__init__.py>`
Scripts to update static data in :origin:`searx/data/`
.. _update_ahmia_blacklist.py:
``update_ahmia_blacklist.py``
=============================
:origin:`[source] <searxng_extra/update/update_ahmia_blacklist.py>`
.. automodule:: searxng_extra.update.update_ahmia_blacklist
:members:
``update_currencies.py``
========================
:origin:`[source] <searxng_extra/update/update_currencies.py>`
.. automodule:: searxng_extra.update.update_currencies
:members:
``update_engine_descriptions.py``
=================================
:origin:`[source] <searxng_extra/update/update_engine_descriptions.py>`
.. automodule:: searxng_extra.update.update_engine_descriptions
:members:
``update_external_bangs.py``
============================
:origin:`[source] <searxng_extra/update/update_external_bangs.py>`
.. automodule:: searxng_extra.update.update_external_bangs
:members:
``update_firefox_version.py``
=============================
:origin:`[source] <searxng_extra/update/update_firefox_version.py>`
.. automodule:: searxng_extra.update.update_firefox_version
:members:
``update_engine_traits.py``
===========================
:origin:`[source] <searxng_extra/update/update_engine_traits.py>`
.. automodule:: searxng_extra.update.update_engine_traits
:members:
``update_osm_keys_tags.py``
===========================
:origin:`[source] <searxng_extra/update/update_osm_keys_tags.py>`
.. automodule:: searxng_extra.update.update_osm_keys_tags
:members:
``update_pygments.py``
======================
:origin:`[source] <searxng_extra/update/update_pygments.py>`
.. automodule:: searxng_extra.update.update_pygments
:members:
``update_wikidata_units.py``
============================
:origin:`[source] <searxng_extra/update/update_wikidata_units.py>`
.. automodule:: searxng_extra.update.update_wikidata_units
:members:

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.. _translation:
===========
Translation
===========
.. _translate.codeberg.org: https://translate.codeberg.org/projects/searxng/
.. _Weblate: https://docs.weblate.org
.. _translations branch: https://github.com/searxng/searxng/tree/translations
.. _orphan branch: https://git-scm.com/docs/git-checkout#Documentation/git-checkout.txt---orphanltnewbranchgt
.. _Weblate repository: https://translate.codeberg.org/projects/searxng/searxng/#repository
.. _wlc: https://docs.weblate.org/en/latest/wlc.html
.. |translated| image:: https://translate.codeberg.org/widgets/searxng/-/searxng/svg-badge.svg
:target: https://translate.codeberg.org/projects/searxng/
.. sidebar:: |translated|
- :ref:`searx.babel_extract`
- Weblate_
- SearXNG `translations branch`_
- SearXNG `Weblate repository`_
- Weblate Client: wlc_
- Babel Command-Line: `pybabel <http://babel.pocoo.org/en/latest/cmdline.html>`_
- `weblate workflow <https://docs.weblate.org/en/latest/workflows.html>`_
Translation takes place on translate.codeberg.org_.
Translations which has been added by translators on the translate.codeberg.org_ UI are
committed to Weblate's counterpart of the SearXNG *origin* repository which is
located at ``https://translate.codeberg.org/git/searxng/searxng``.
There is no need to clone this repository, :ref:`SearXNG Weblate workflow` take
care of the synchronization with the *origin*. To avoid merging commits from
the counterpart directly on the ``master`` branch of *SearXNG origin*, a *pull
request* (PR) is created by this workflow.
Weblate monitors the `translations branch`_, not the ``master`` branch. This
branch is an `orphan branch`_, decoupled from the master branch (we already know
orphan branches from the ``gh-pages``). The `translations branch`_ contains
only the
- ``translation/messages.pot`` and the
- ``translation/*/messages.po`` files, nothing else.
.. _SearXNG Weblate workflow:
.. figure:: translation.svg
SearXNG's PR workflow to be in sync with Weblate
Sync from *origin* to *weblate*: using ``make weblate.push.translations``
For each commit on the ``master`` branch of SearXNG *origin* the GitHub job
:origin:`babel / Update translations branch
<.github/workflows/integration.yml>` checks for updated translations.
Sync from *weblate* to *origin*: using ``make weblate.translations.commit``
Every Friday, the GitHub workflow :origin:`babel / create PR for additions from
weblate <.github/workflows/translations-update.yml>` creates a PR with the
updated translation files:
- ``translation/messages.pot``,
- ``translation/*/messages.po`` and
- ``translation/*/messages.mo``
wlc
===
.. _wlc configuration: https://docs.weblate.org/en/latest/wlc.html#wlc-config
.. _API key: https://translate.codeberg.org/accounts/profile/#api
All weblate integration is done by GitHub workflows, but if you want to use wlc_,
copy this content into `wlc configuration`_ in your HOME ``~/.config/weblate``
.. code-block:: ini
[keys]
https://translate.codeberg.org/api/ = APIKEY
Replace ``APIKEY`` by your `API key`_.

54
_sources/index.rst.txt Normal file
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==================
Welcome to SearXNG
==================
*Search without being tracked.*
SearXNG is a free internet metasearch engine which aggregates results from more
than 70 search services. Users are neither tracked nor profiled. Additionally,
SearXNG can be used over Tor for online anonymity.
Get started with SearXNG by using one of the instances listed at searx.space_.
If you don't trust anyone, you can set up your own, see :ref:`installation`.
.. sidebar:: features
- :ref:`self hosted <installation>`
- :ref:`no user tracking / no profiling <SearXNG protect privacy>`
- script & cookies are optional
- secure, encrypted connections
- :ref:`about 130 search engines <configured engines>`
- `about 60 translations <https://translate.codeberg.org/projects/searxng/searxng/>`_
- about 100 `well maintained <https://uptime.searxng.org/>`__ instances on searx.space_
- :ref:`easy integration of search engines <demo online engine>`
- professional development: `CI <https://github.com/searxng/searxng/actions>`_,
`quality assurance <https://dev.searxng.org/>`_ &
`automated tested UI <https://dev.searxng.org/screenshots.html>`_
.. sidebar:: be a part
SearXNG is driven by an open community, come join us! Don't hesitate, no
need to be an *expert*, everyone can contribute:
- `help to improve translations <https://translate.codeberg.org/projects/searxng/searxng/>`_
- `discuss with the community <https://matrix.to/#/#searxng:matrix.org>`_
- report bugs & suggestions
- ...
.. sidebar:: the origin
SearXNG development has been started in the middle of 2021 as a fork of the
searx project.
.. toctree::
:maxdepth: 2
user/index
own-instance
admin/index
dev/index
utils/index
src/index
.. _searx.space: https://searx.space

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===========================
Why use a private instance?
===========================
.. sidebar:: Is it worth to run my own instance?
\.\. is a common question among SearXNG users. Before answering this
question, see what options a SearXNG user has.
.. contents::
:depth: 2
:local:
:backlinks: entry
Public instances are open to everyone who has access to its URL. Usually, these
are operated by unknown parties (from the users' point of view). Private
instances can be used by a select group of people. It is for example a SearXNG of
group of friends or a company which can be accessed through VPN. Also it can be
single user one which runs on the user's laptop.
To gain more insight on how these instances work let's dive into how SearXNG
protects its users.
.. _SearXNG protect privacy:
How does SearXNG protect privacy?
=================================
SearXNG protects the privacy of its users in multiple ways regardless of the type
of the instance (private, public). Removal of private data from search requests
comes in three forms:
1. removal of private data from requests going to search services
2. not forwarding anything from a third party services through search services
(e.g. advertisement)
3. removal of private data from requests going to the result pages
Removing private data means not sending cookies to external search engines and
generating a random browser profile for every request. Thus, it does not matter
if a public or private instance handles the request, because it is anonymized in
both cases. IP addresses will be the IP of the instance. But SearXNG can be
configured to use proxy or Tor. `Result proxy
<https://github.com/asciimoo/morty>`__ is supported, too.
SearXNG does not serve ads or tracking content unlike most search services. So
private data is not forwarded to third parties who might monetize it. Besides
protecting users from search services, both referring page and search query are
hidden from visited result pages.
What are the consequences of using public instances?
----------------------------------------------------
If someone uses a public instance, they have to trust the administrator of that
instance. This means that the user of the public instance does not know whether
their requests are logged, aggregated and sent or sold to a third party.
Also, public instances without proper protection are more vulnerable to abusing
the search service, In this case the external service in exchange returns
CAPTCHAs or bans the IP of the instance. Thus, search requests return less
results.
I see. What about private instances?
------------------------------------
If users run their :ref:`own instances <installation>`, everything is in their
control: the source code, logging settings and private data. Unknown instance
administrators do not have to be trusted.
Furthermore, as the default settings of their instance is editable, there is no
need to use cookies to tailor SearXNG to their needs. So preferences will not be
reset to defaults when clearing browser cookies. As settings are stored on
their computer, it will not be accessible to others as long as their computer is
not compromised.
Conclusion
==========
Always use an instance which is operated by people you trust. The privacy
features of SearXNG are available to users no matter what kind of instance they
use.
If someone is on the go or just wants to try SearXNG for the first time public
instances are the best choices. Additionally, public instance are making a
world a better place, because those who cannot or do not want to run an
instance, have access to a privacy respecting search service.

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===========
Source-Code
===========
This is a partial documentation of our source code. We are not aiming to document
every item from the source code, but we will add documentation when requested.
.. toctree::
:maxdepth: 2
:glob:
searx.*

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.. _searx.babel_extract:
===============================
Custom message extractor (i18n)
===============================
.. automodule:: searx.babel_extract
:members:

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.. _botdetection:
=============
Bot Detection
=============
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.botdetection
:members:
.. _botdetection ip_lists:
IP lists
========
.. automodule:: searx.botdetection.ip_lists
:members:
.. _botdetection rate limit:
Rate limit
==========
.. automodule:: searx.botdetection.ip_limit
:members:
.. automodule:: searx.botdetection.link_token
:members:
.. _botdetection probe headers:
Probe HTTP headers
==================
.. automodule:: searx.botdetection.http_accept
:members:
.. automodule:: searx.botdetection.http_accept_encoding
:members:
.. automodule:: searx.botdetection.http_accept_language
:members:
.. automodule:: searx.botdetection.http_connection
:members:
.. automodule:: searx.botdetection.http_user_agent
:members:
.. _botdetection config:
Config
======
.. automodule:: searx.botdetection.config
:members:

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.. _searx.exceptions:
==================
SearXNG Exceptions
==================
.. automodule:: searx.exceptions
:members:

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.. _searx.infopage:
================
Online ``/info``
================
.. automodule:: searx.infopage
:members:

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.. _searx.locales:
=======
Locales
=======
.. contents::
:depth: 2
:local:
:backlinks: entry
.. automodule:: searx.locales
:members:
SearXNG's locale codes
======================
.. automodule:: searx.sxng_locales
:members:

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.. _tor check plugin:
================
Tor check plugin
================
.. automodule:: searx.plugins.tor_check
:members:

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.. _redis db:
========
Redis DB
========
.. automodule:: searx.redisdb
:members:

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.. _searx.redis:
=============
Redis Library
=============
.. automodule:: searx.redislib
:members:

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.. _searx.search.processors:
=================
Search processors
=================
.. contents::
:depth: 2
:local:
:backlinks: entry
Abstract processor class
========================
.. automodule:: searx.search.processors.abstract
:members:
Offline processor
=================
.. automodule:: searx.search.processors.offline
:members:
Online processor
================
.. automodule:: searx.search.processors.online
:members:
Online currency processor
=========================
.. automodule:: searx.search.processors.online_currency
:members:
Online dictionary processor
===========================
.. automodule:: searx.search.processors.online_dictionary
:members:
Online URL search processor
===========================
.. automodule:: searx.search.processors.online_url_search
:members:

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.. _searx.search:
======
Search
======
.. autoclass:: searx.search.EngineRef
:members:
.. autoclass:: searx.search.SearchQuery
:members:
.. autoclass:: searx.search.Search
.. attribute:: search_query
:type: searx.search.SearchQuery
.. attribute:: result_container
:type: searx.results.ResultContainer
.. automethod:: search() -> searx.results.ResultContainer
.. autoclass:: searx.search.SearchWithPlugins
:members:
.. attribute:: search_query
:type: searx.search.SearchQuery
.. attribute:: result_container
:type: searx.results.ResultContainer
.. attribute:: ordered_plugin_list
:type: typing.List
.. attribute:: request
:type: flask.request
.. automethod:: search() -> searx.results.ResultContainer

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.. _searx.utils:
=================================
Utility functions for the engines
=================================
.. automodule:: searx.utils
:members:

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.. _about SearXNG:
.. include:: about.md
:parser: myst_parser.sphinx_

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.. _configured engines:
==================
Configured Engines
==================
.. sidebar:: Further reading ..
- :ref:`settings categories_as_tabs`
- :ref:`engines-dev`
- :ref:`settings engine`
- :ref:`general engine configuration`
.. jinja:: searx
SearXNG supports {{engines | length}} search engines of which
{{enabled_engine_count}} are enabled by default.
Engines can be assigned to multiple :ref:`categories <engine categories>`.
The UI displays the tabs that are configured in :ref:`categories_as_tabs
<settings categories_as_tabs>`. In addition to these UI categories (also
called *tabs*), engines can be queried by their name or the categories they
belong to, by using a :ref:`\!bing syntax <search-syntax>`.
.. contents::
:depth: 2
:local:
:backlinks: entry
.. jinja:: searx
{% for category, engines in categories_as_tabs.items() %}
tab ``!{{category.replace(' ', '_')}}``
---------------------------------------
{% for group, group_bang, engines in engines | group_engines_in_tab %}
{% if loop.length > 1 %}
{% if group_bang %}group ``{{group_bang}}``{% else %}{{group}}{% endif %}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
{% endif %}
.. flat-table::
:header-rows: 2
:stub-columns: 1
:widths: 10 1 10 1 1 1 1 1 1 1
* - :cspan:`5` Engines configured by default (in :ref:`settings.yml <engine settings>`)
- :cspan:`3` :ref:`Supported features <engine file>`
* - Name
- !bang
- Module
- Disabled
- Timeout
- Weight
- Paging
- Locale
- Safe search
- Time range
{% for mod in engines %}
* - `{{mod.name}} <{{mod.about and mod.about.website}}>`_
{%- if mod.about and mod.about.language %}
({{mod.about.language | upper}})
{%- endif %}
- ``!{{mod.shortcut}}``
- {%- if 'searx.engines.' + mod.__name__ in documented_modules %}
:py:mod:`~searx.engines.{{mod.__name__}}`
{%- else %}
:origin:`{{mod.__name__}} <searx/engines/{{mod.__name__}}.py>`
{%- endif %}
- {{(mod.disabled and "y") or ""}}
- {{mod.timeout}}
- {{mod.weight or 1 }}
{% if mod.engine_type == 'online' %}
- {{(mod.paging and "y") or ""}}
- {{(mod.language_support and "y") or ""}}
- {{(mod.safesearch and "y") or ""}}
- {{(mod.time_range_support and "y") or ""}}
{% else %}
- :cspan:`3` not applicable ({{mod.engine_type}})
{% endif %}
{% endfor %}
{% endfor %}
{% endfor %}

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================
User information
================
.. contents::
:depth: 3
:local:
:backlinks: entry
.. toctree::
:maxdepth: 2
search-syntax
configured_engines
about

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