SN1460-add-prometheus-multiproc-dir-config : lp:~superalpaca/ols-charm-deps : Git : Code : ols-charm-deps

Get this branch:: git clone -b SN1460-add-prometheus-multiproc-dir-config https://git.launchpad.net/~superalpaca/ols-charm-deps

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Branch merges

Merged into ols-charm-deps:master

Guillermo Gonzalez: Approve on 2023-03-23

Przemysław Suliga: Approve on 2023-03-22

Branch information

Name:: SN1460-add-prometheus-multiproc-dir-config

Repository:: lp:~superalpaca/ols-charm-deps

Recent commits

4b199e0... by Deep Fowdar on 2023-03-23

Update and simplify prometheus multiproc option.

* 'wsgi_use_prometheus_multiproc' now sets the appropriate env vars via
  'env_extra', which in turn gets written to the environment_variables
  file.
* Removed now redundant gunicorn restart for this option (will restart
  on env var file change)
* Simplified gunicorn config file

3d8a8f5... by Deep Fowdar on 2023-03-22

Fix error from config reload when changing 'wsgi_use_prometheus_multiproc' and other misc changes.

Additional changes:
* Added link to the required python prometheus client on GitHub
* Multiproc metrics now always apply when the option is set, ignoring
the worker count

a90fc33... by Deep Fowdar on 2023-03-21

Fix gunicorn crashing on charm startup.

The gunicorn service was failing on startup due to a partially
initialised module (prometheus_client). However, moving this import from
child_exit() to the top of the file results in an empty metrics endpoint
for the workers. The solution to this is to re-initialise the
prometheus_client.values.ValueClass so it can fetch the new multiprocess
environment variables.

50e75c5... by Deep Fowdar on 2023-03-21