action #130636
Updated by mkittler 2 months ago
## Motivation
Apache in prefork mode uses a lot of resources to provide mediocre performance.
## Acceptance criteria
* **AC1:** Nginx has been deployed successfully on OSD
* **AC2:** No alerts regarding "oh no, apache is down" ;)
## Suggestions
* Make sure there is an easy way to switch back to Apache in case something goes wrong
* See #129490 for results from O3
* Adapt OSD nginx config for HTTP + HTTPS (O3 only requires HTTP)
* We can prepare the deployment of nginx in parallel to apache, have it deployed and at any time decide when to switch by just disabling/enabling services accordingly. The deployment needs to consider dehydrated+nginx as well. We can switch OSD to nginx to gather realtime data before we suggest to use nginx as default in our openQA documentation and CI infrastructure.
* Add changes to salt-states-openqa excluding monitoring
* Ensure that we have no alerts regarding "oh no, apache is down" ;)
* If there are any bigger issues observed then just revert and note down in follow-up tickets what needs to be solved first (to limit the ticket to size:S)
## Out of scope
* It is known if Nginx rate limiting features work for our use cases
* Full monitoring integration
## Rollback steps
* `delete from workers where host = 'linux-9lzf';` to delete my test workers