Markus Heiser 5720844fcd [doc] rearranges Settings & Engines docs for better readability

We have built up detailed documentation of the *settings* and the *engines* over
the past few years.  However, this documentation was still spread over various
chapters and was difficult to navigate in its entirety.

This patch rearranges the Settings & Engines documentation for better
readability.

To review new ordered docs::

   make docs.clean docs.live

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

2023-07-01 22:45:19 +02:00

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`redis:`

A redis DB can be connected by an URL, in :pysearx.redisdb you will find a description to test your redis connection in SerXNG. 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) & redis db:

redis://[[username]:[password]]@localhost:6379/0
rediss://[[username]:[password]]@localhost:6379/0
unix://[[username]:[password]]@/path/to/socket.sock?db=0

Tip for developers

To set up a local redis instance, first set the socket path of the Redis DB in your YAML setting:

redis:
  url: unix:///usr/local/searxng-redis/run/redis.sock?db=0

Then use the following commands to install the redis instance :

$ ./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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redis:

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`redis:`