|
.. _searx uwsgi:
|
|
|
|
=====
|
|
uwsgi
|
|
=====
|
|
|
|
.. sidebar:: further reading
|
|
|
|
- `systemd.unit`_
|
|
- `uWSGI Emperor`_
|
|
|
|
.. contents:: 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
|
|
============
|
|
|
|
How uWSGI is implemented by distributors is different. uWSGI itself
|
|
recommend two methods
|
|
|
|
`systemd.unit`_ template files as described here `One service per app in systemd`_.
|
|
|
|
There is one `systemd unit template`_ and one `uwsgi ini file`_ per uWSGI-app
|
|
placed at dedicated locations. Take archlinux and a searx.ini as example::
|
|
|
|
unit template --> /usr/lib/systemd/system/uwsgi@.service
|
|
uwsgi ini files --> /etc/uwsgi/searx.ini
|
|
|
|
The searx app can be maintained as know from common systemd units::
|
|
|
|
systemctl enable uwsgi@searx
|
|
systemctl start uwsgi@searx
|
|
systemctl restart uwsgi@searx
|
|
systemctl stop uwsgi@searx
|
|
|
|
The `uWSGI Emperor`_ mode which fits for maintaining a large range of uwsgi apps.
|
|
|
|
The Emperor mode is a special uWSGI instance that will monitor specific
|
|
events. The Emperor mode (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 searx.ini as
|
|
example::
|
|
|
|
to start a new searx instance create --> /etc/uwsgi.d/searx.ini
|
|
to reload the instance edit timestamp --> touch /etc/uwsgi.d/searx.ini
|
|
to stop instance remove ini --> rm /etc/uwsgi.d/searx.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 is the packaging of
|
|
plugins (if so, compare :ref:`install packages`) and what the default python
|
|
interpreter is (python2 vs. python3).
|
|
|
|
Fedora starts a Emperor by default, while archlinux does not start any uwsgi
|
|
service by default. Worth to know; debian (ubuntu) follow a complete different
|
|
approach. *debian*: your are familiar with the apache infrastructure? .. they
|
|
do similar for the uWSGI infrastructure (with less comfort), 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/searx.ini /etc/uwsgi/apps-enabled/
|
|
|
|
From debian's documentation (``/usr/share/doc/uwsgi/README.Debian.gz``): You
|
|
could control specific instance(s) by issuing::
|
|
|
|
service uwsgi <command> <confname> <confname> ...
|
|
|
|
sudo -H service uwsgi start searx
|
|
sudo -H service uwsgi stop searx
|
|
|
|
My experience is, that this command is a bit buggy.
|
|
|
|
.. _uwsgi configuration:
|
|
|
|
Alltogether
|
|
===========
|
|
|
|
Create the configuration ini-file according to your distribution (see below) and
|
|
restart the uwsgi application.
|
|
|
|
.. tabs::
|
|
|
|
.. group-tab:: Ubuntu / debian
|
|
|
|
.. kernel-include:: $DOCS_BUILD/includes/searx.rst
|
|
:start-after: START searx uwsgi-description ubuntu-20.04
|
|
:end-before: END searx uwsgi-description ubuntu-20.04
|
|
|
|
.. hotfix: a bug group-tab need this comment
|
|
|
|
.. group-tab:: Arch Linux
|
|
|
|
.. kernel-include:: $DOCS_BUILD/includes/searx.rst
|
|
:start-after: START searx uwsgi-description arch
|
|
:end-before: END searx uwsgi-description arch
|
|
|
|
.. hotfix: a bug group-tab need this comment
|
|
|
|
.. group-tab:: Fedora / RHEL
|
|
|
|
.. kernel-include:: $DOCS_BUILD/includes/searx.rst
|
|
:start-after: START searx uwsgi-description fedora
|
|
:end-before: END searx uwsgi-description fedora
|
|
|
|
|
|
.. tabs::
|
|
|
|
.. group-tab:: Ubuntu / debian
|
|
|
|
.. kernel-include:: $DOCS_BUILD/includes/searx.rst
|
|
:start-after: START searx uwsgi-appini ubuntu-20.04
|
|
:end-before: END searx uwsgi-appini ubuntu-20.04
|
|
|
|
.. hotfix: a bug group-tab need this comment
|
|
|
|
.. group-tab:: Arch Linux
|
|
|
|
.. kernel-include:: $DOCS_BUILD/includes/searx.rst
|
|
:start-after: START searx uwsgi-appini arch
|
|
:end-before: END searx uwsgi-appini arch
|
|
|
|
.. hotfix: a bug group-tab need this comment
|
|
|
|
.. group-tab:: Fedora / RHEL
|
|
|
|
.. kernel-include:: $DOCS_BUILD/includes/searx.rst
|
|
:start-after: START searx uwsgi-appini fedora
|
|
:end-before: END searx uwsgi-appini fedora
|