forked from zaclys/searxng
296 lines
9.0 KiB
ReStructuredText
296 lines
9.0 KiB
ReStructuredText
|
|
.. _snap: https://snapcraft.io
|
|
.. _snapcraft LXD: https://snapcraft.io/lxd
|
|
.. _LXC/LXD Image Server: https://uk.images.linuxcontainers.org/
|
|
.. _LXC: https://linuxcontainers.org/lxc/introduction/
|
|
.. _LXD: https://linuxcontainers.org/lxd/introduction/
|
|
.. _`LXD@github`: https://github.com/lxc/lxd
|
|
|
|
.. _archlinux: https://www.archlinux.org/
|
|
|
|
.. _lxc.sh:
|
|
|
|
================
|
|
``utils/lxc.sh``
|
|
================
|
|
|
|
With the use of *Linux Containers* (LXC_) we can scale our tasks over a stack of
|
|
containers, what we call the: *lxc suite*. The :ref:`lxc-searxng.env` is
|
|
loaded by default, every time you start the ``lxc.sh`` script (*you do not need
|
|
to care about*).
|
|
|
|
.. sidebar:: further reading
|
|
|
|
- snap_, `snapcraft LXD`_
|
|
- LXC_, LXD_
|
|
- `LXC/LXD Image Server`_
|
|
- `LXD@github`_
|
|
|
|
.. contents:: Contents
|
|
:depth: 2
|
|
:local:
|
|
:backlinks: entry
|
|
|
|
|
|
.. _lxd install:
|
|
|
|
Install LXD
|
|
===========
|
|
|
|
Before you can start with containers, you need to install and initiate LXD_
|
|
once::
|
|
|
|
$ snap install lxd
|
|
$ lxd init --auto
|
|
|
|
To make use of the containers from the *SearXNG suite*, you have to build the
|
|
:ref:`LXC suite containers <lxc.sh help>` initial. But be warned, **this might
|
|
take some time**::
|
|
|
|
$ sudo -H ./utils/lxc.sh build
|
|
|
|
.. sidebar:: hint
|
|
|
|
If you have issues with the internet connectivity of your containers read
|
|
section :ref:`internet connectivity docker`.
|
|
|
|
A cup of coffee later, your LXC suite is build up and you can run whatever task
|
|
you want / in a selected or even in all :ref:`LXC suite containers <lxc.sh
|
|
help>`.
|
|
|
|
.. _internet connectivity docker:
|
|
|
|
Internet Connectivity & Docker
|
|
------------------------------
|
|
|
|
.. sidebar:: further read
|
|
|
|
- `Docker blocking network of existing LXC containers <https://github.com/docker/for-linux/issues/103>`__
|
|
- `Docker and IPtables (fralef.me) <https://fralef.me/docker-and-iptables.html>`__
|
|
- `Docker and iptables (docker.com) <https://docs.docker.com/network/iptables/#docker-on-a-router/>`__
|
|
|
|
There is a conflict in the ``iptables`` setup of Docker & LXC. If you have
|
|
docker installed, you may find that the internet connectivity of your LXD
|
|
containers no longer work.
|
|
|
|
Whenever docker is started (reboot) it sets the iptables policy for the
|
|
``FORWARD`` chain to ``DROP`` `[ref]
|
|
<https://docs.docker.com/network/iptables/#docker-on-a-router>`__::
|
|
|
|
$ sudo -H iptables-save | grep FORWARD
|
|
:FORWARD ACCEPT [7048:7851230]
|
|
:FORWARD DROP [7048:7851230]
|
|
|
|
A handy solution of this problem might be to reset the policy for the
|
|
``FORWARD`` chain after the network has been initialized. For this create a
|
|
file in the ``if-up`` section of the network (``/etc/network/if-up.d/iptable``)
|
|
and insert the following lines::
|
|
|
|
#!/bin/sh
|
|
iptables -F FORWARD
|
|
iptables -P FORWARD ACCEPT
|
|
|
|
Don't forget to set the execution bit::
|
|
|
|
sudo chmod ugo+x /etc/network/if-up.d/iptable
|
|
|
|
Reboot your system and check the iptables rules::
|
|
|
|
$ sudo -H iptables-save | grep FORWARD
|
|
:FORWARD ACCEPT [7048:7851230]
|
|
:FORWARD ACCEPT [7048:7851230]
|
|
|
|
|
|
.. _searxng lxc suite:
|
|
|
|
SearXNG LXC suite
|
|
=================
|
|
|
|
The intention of the *SearXNG LXC suite* is to build up a suite of containers
|
|
for development tasks or :ref:`buildhosts <Setup SearXNG buildhost>` with a very
|
|
small set of simple commands. At the end of the ``--help`` output the SearXNG
|
|
suite from the :ref:`lxc-searxng.env` is introduced::
|
|
|
|
$ sudo -H ./utils/lxc.sh --help
|
|
...
|
|
LXC suite: searxng
|
|
Suite includes installation of SearXNG
|
|
images: ubu2004 ubu2204 fedora35 archlinux
|
|
containers: searxng-ubu2004 searxng-ubu2204 searxng-fedora35 searxng-archlinux
|
|
|
|
As shown above there are images and containers build up on this images. To show
|
|
more info about the containers in the *SearXNG LXC suite* call ``show suite``.
|
|
If this is the first time you make use of the SearXNG LXC suite, no containers
|
|
are installed and the output is::
|
|
|
|
$ sudo -H ./utils/lxc.sh show suite
|
|
|
|
LXC suite (searxng-*)
|
|
=====================
|
|
|
|
+------+-------+------+------+------+-----------+
|
|
| NAME | STATE | IPV4 | IPV6 | TYPE | SNAPSHOTS |
|
|
+------+-------+------+------+------+-----------+
|
|
|
|
WARN: container searxng-ubu2004 does not yet exists
|
|
WARN: container searxng-ubu2204 does not yet exists
|
|
WARN: container searxng-fedora35 does not yet exists
|
|
WARN: container searxng-archlinux does not yet exists
|
|
|
|
If you do not want to run a command or a build in all containers, **you can
|
|
build just one**. Here by example in the container that is build upon the
|
|
*archlinux* image::
|
|
|
|
$ sudo -H ./utils/lxc.sh build searxng-archlinux
|
|
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux pwd
|
|
|
|
Otherwise, to apply a command to all containers you can use::
|
|
|
|
$ sudo -H ./utils/lxc.sh build
|
|
$ sudo -H ./utils/lxc.sh cmd -- ls -la .
|
|
|
|
Running commands
|
|
----------------
|
|
|
|
**Inside containers, you can run scripts** from the :ref:`toolboxing` or run
|
|
what ever command you need. By example, to start a bash use::
|
|
|
|
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux bash
|
|
INFO: [searxng-archlinux] bash
|
|
[root@searxng-archlinux SearXNG]#
|
|
|
|
.. _Good to know:
|
|
|
|
Good to know
|
|
------------
|
|
|
|
Each container shares the root folder of the repository and the command
|
|
``utils/lxc.sh cmd`` **handle relative path names transparent**::
|
|
|
|
$ pwd
|
|
/share/SearXNG
|
|
|
|
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux pwd
|
|
INFO: [searxng-archlinux] pwd
|
|
/share/SearXNG
|
|
|
|
The path ``/share/SearXNG`` will be different on your HOST system. The commands
|
|
in the conatiner are executed by the ``root`` inside of the container. Compare
|
|
output of::
|
|
|
|
$ ls -li Makefile
|
|
47712402 -rw-rw-r-- 1 markus markus 2923 Apr 19 13:52 Makefile
|
|
|
|
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux ls -li Makefile
|
|
INFO: [searxng-archlinux] ls -li Makefile
|
|
47712402 -rw-rw-r-- 1 root root 2923 Apr 19 11:52 Makefile
|
|
...
|
|
|
|
Since the path ``/share/SearXNG`` of the HOST system is wrapped into the
|
|
container under the same name, the shown ``Makefile`` (inode ``47712402``) in
|
|
the ouput is always the identical ``/share/SearXNG/Makefile`` from the HOST
|
|
system. In the example shown above the owner of the path in the container is
|
|
the ``root`` user of the conatiner (and the timezone in the container is
|
|
different to HOST system).
|
|
|
|
|
|
.. _lxc.sh install suite:
|
|
|
|
Install suite
|
|
-------------
|
|
|
|
.. sidebar:: further read
|
|
|
|
- :ref:`working in containers`
|
|
- :ref:`FORCE_TIMEOUT <FORCE_TIMEOUT>`
|
|
|
|
To install the complete :ref:`SearXNG suite <lxc-searxng.env>` into **all** LXC_
|
|
containers leave the container argument empty and run::
|
|
|
|
$ sudo -H ./utils/lxc.sh build
|
|
$ sudo -H ./utils/lxc.sh install suite
|
|
|
|
To *build & install* suite only in one container you can use by example::
|
|
|
|
$ sudo -H ./utils/lxc.sh build searxng-archlinux
|
|
$ sudo -H ./utils/lxc.sh install suite searxng-archlinux
|
|
|
|
The command above installs a SearXNG suite (see :ref:`installation scripts`).
|
|
To :ref:`install a nginx <installation nginx>` reverse proxy (or alternatively
|
|
use :ref:`apache <installation apache>`)::
|
|
|
|
$ sudo -H ./utils/lxc.sh cmd -- FORCE_TIMEOUT=0 ./utils/searxng.sh install nginx
|
|
|
|
Same operation just in one container of the suite::
|
|
|
|
$ sudo -H ./utils/lxc.sh cmd searxng-archlinux FORCE_TIMEOUT=0 ./utils/searxng.sh install nginx
|
|
|
|
The :ref:`FORCE_TIMEOUT <FORCE_TIMEOUT>` environment is set to zero to run the
|
|
script without user interaction.
|
|
|
|
To get the IP (URL) of the SearXNG service in the containers use ``show suite``
|
|
command. To test instances from containers just open the URLs in your
|
|
WEB-Browser::
|
|
|
|
$ sudo ./utils/lxc.sh show suite | grep SEARXNG_URL
|
|
|
|
[searxng-ubu2110] SEARXNG_URL : http://n.n.n.170/searxng
|
|
[searxng-ubu2004] SEARXNG_URL : http://n.n.n.160/searxng
|
|
[searxnggfedora35] SEARXNG_URL : http://n.n.n.150/searxng
|
|
[searxng-archlinux] SEARXNG_URL : http://n.n.n.140/searxng
|
|
|
|
Clean up
|
|
--------
|
|
|
|
If there comes the time you want to **get rid off all** the containers and
|
|
**clean up local images** just type::
|
|
|
|
$ sudo -H ./utils/lxc.sh remove
|
|
$ sudo -H ./utils/lxc.sh remove images
|
|
|
|
|
|
.. _Setup SearXNG buildhost:
|
|
|
|
Setup SearXNG buildhost
|
|
=======================
|
|
|
|
You can **install the SearXNG buildhost environment** into one or all containers.
|
|
The installation procedure to set up a :ref:`build host<buildhosts>` takes its
|
|
time. Installation in all containers will take more time (time for another cup
|
|
of coffee). ::
|
|
|
|
sudo -H ./utils/lxc.sh cmd -- ./utils/searxng.sh install buildhost
|
|
|
|
To build (live) documentation inside a archlinux_ container::
|
|
|
|
sudo -H ./utils/lxc.sh cmd searxng-archlinux make docs.clean docs.live
|
|
...
|
|
[I 200331 15:00:42 server:296] Serving on http://0.0.0.0:8080
|
|
|
|
To get IP of the container and the port number *live docs* is listening::
|
|
|
|
$ sudo ./utils/lxc.sh show suite | grep docs.live
|
|
...
|
|
[searxng-archlinux] INFO: (eth0) docs.live: http://n.n.n.140:8080/
|
|
|
|
|
|
.. _lxc.sh help:
|
|
|
|
Command Help
|
|
============
|
|
|
|
The ``--help`` output of the script is largely self-explanatory:
|
|
|
|
.. program-output:: ../utils/lxc.sh --help
|
|
|
|
|
|
.. _lxc-searxng.env:
|
|
|
|
SearXNG suite config
|
|
====================
|
|
|
|
The SearXNG suite is defined in the file :origin:`utils/lxc-searxng.env`:
|
|
|
|
.. literalinclude:: ../../utils/lxc-searxng.env
|
|
:language: bash
|