Hi all!

Good news, we have enabled health checks for all the webservices running on
toolforge.

There's no action required on your part, the next time you restart or
stop/start your webservice, it will have a tcp health check by default (just
making sure something is listening).

The most interesting feature though is being able to pass a url to use as HTTP
health check.

To do so you can pass `--health-check-url /path/to/health` to your `toolforge
webservice start` command, and toolforge will automatically restart your
webservice if it stops responding to that path (you can change the path to
whatever you want, ex. `/`).

Note that this url will be queried quite often, so try to avoid hitting a page
that uses many resources.

Also a reminder that you can find this and smaller user-facing updates about
the Toolforge platform features here:
https://wikitech.wikimedia.org/wiki/Portal:Toolforge/Changelog

Original task: https://phabricator.wikimedia.org/T341919

Cheers!

-- 
David Caro
SRE - Cloud Services
Wikimedia Foundation <https://wikimediafoundation.org/>
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"Imagine a world in which every single human being can freely share in the
sum of all knowledge. That's our commitment."

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