__netbox{,_uwsgi}: updated manpages

Mostly added notes of what does not work that well.
This commit is contained in:
matze 2020-10-17 11:22:47 +02:00
parent 558021d2ee
commit 46bff41f6d
2 changed files with 28 additions and 15 deletions

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@ -16,7 +16,7 @@ It setup systemd unit files for the services `netbox` and `netbox-rq`. The
`netbox` service only wrap all netbox related services, e.g. restarting and
so one will be delegated to all related services.
The application is still not accessable because WSGI server is required. To
The application is still not accessable because a WSGI server is required. To
access the application through WSGI, uWSGI or Gunicorn can be used. The setup
can be done via there own types `__netbox_gunicorn` and `__netbox_uwsgi`.
@ -236,23 +236,21 @@ If you not setup ldap authentification, you may be interested into how to
<https://netbox.readthedocs.io/en/stable/installation/3-netbox/#create-a-super-user>`
directly on the machine to be able to access and use NetBox.
If you change a configuration, the database may go corrupt if two instances of
the application are running with different configurations at the same time.
This most commonly happens when the WSGI server and RQ-worker restarts after a
configuration change. This occours in the following case for example:
You may also be interested of writing a own type which handles the creation of
the super user. To do this non-interactivly, see the ansible role as `reference
<https://github.com/lae/ansible-role-netbox/blob/18f46a3345f100936c5116abe716c480e1886676/vars/main.yml#L15>`.
.. code-block:: sh
If you change the secret key while the netbox instance is running, there is a
time frame where the access to the application corrupts the whole database.
Then, you need to restore a backup or wipe the database.
systemctl restart gunicorn-netbox # WSGI-server already online with new
# configuration after this command.
systemctl restart netbox-rq # RQ-Worker still worked with the old
# configuration till here.
Currently, the cause is not clear, but it should work if you do not touch
netbox while the configuration is done (do not shut it down, too). It only
applies for changes of the secret key, which not happen normally.
This type handles the restart of both services correctly to avoid such database
corruptions. To safely manual restart the whole netbox instance manual, simply
restart all services in one ``systemctl restart netbox`` command, as it ensures
that first all services are shut down before starting one of them. The service
``netbox`` wraps all required services that are available.
Maybe the `--restart` flag for the `__systemd_unit` types is not the best idea,
but avoids that the changes will not be applied. It could be solved if the type
would send messages from his actions.
SEE ALSO

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@ -129,6 +129,7 @@ EXAMPLES
# with multiple protocols
# parameter `--bind-to` will be ignored
# avoids systemd sockets, but can handle multiple protocols
__netbox $args
require="__netbox" __netbox_uwsgi --uwsgi-bind 0.0.0.0:3031 \
--http-bind 0.0.0.0:8080 \
@ -150,6 +151,20 @@ EXAMPLES
require="__netbox_uwsgi" __systemd_service uwsgi-netbox --state stopped
NOTES
-----
If systemd sockets are used, uwsgi can not be reloaded because it does not
handle the socket correctly. It works by completly restarting uwsgi (because
it is near the same cause of the systemd socket) or tweaking the service unit
with the line ``StandardInput=socket``, which limits you to only one address
to bind to (else, the service will not start).
Maybe someone is interested in enabling log files, because the "log to stdout"
is not the fanciest approach (because it is shown in the journal). See the
`uwsgi documentation <https://uwsgi.readthedocs.io/en/latest/Logging.html>` for
reference.
SEE ALSO
--------
`uWSGI Documentation <https://uwsgi-docs.readthedocs.io/en/latest/>`_