id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
3786	Add OpenMetrics-format endpoint for scraping with Prometheus	hacklschorsch	hacklschorsch	"I am creating monitoring infrastructure for the upcoming [https://private.storage/ PrivateStorage SaaS].
I'd like to add an [https://openmetrics.io/ OpenMetrics] format statistics endpoint to be scraped by [https://prometheus.io/ Prometheus].

The de-facto industry standard Prometheus scrapes metrics endpoints that by default are available on the things under monitoring on some HTTP server under {{{/metrics}}}.

I see there's already a {{{/statistics?t=json}}} endpoint that seems very similar to what I want to build, and also lots of useful things in {{{misc/operations_helpers/munin}}}.
My plan so far is to add a `/statistics?t=openmetrics` endpoint exporting the same values as the json, but in OpenMetrics.

In the #tahoe-lafs IRC channel on Libera:

{{{
hacklschorsch | Does that make sense?  Is there a better way?
         jpds | hacklschorsch: Yes, a /metrics endpoint would be great
     itamarst | hacklschorsch: that sounds plausible to me
}}}"	enhancement	closed	normal	undecided	code-frontend-web	unknown	fixed	statistics	exarkun