With parent task done and once there's enough data accumulated in Promethes (e.g. 10/12 weeks) we can deprecate the `cachestats` varnish python subsystem. The following daemons will need to be removed:
[x] varnishmedia
[] varnishreqstats
[x] varnishrls
[] varnishstatsd
[x] varnishxcache
[x] varnishxcps
== varnishstatsd
The following dashboards have varnishstatsd Graphite metrics (i.e. `varnish\..*\.backends\..*`)
[] db/api-frontend-summary [API frontend summary](https://grafana.wikimedia.org/d/000000202/api-frontend-summary?orgId=1)
The Prometheus version is at https://grafana.wikimedia.org/d/Dueegx4Zz/api-frontend-summary-filippo-t184942 although the "rest api varnish hit rate %" for varnish vs restbase metric can't be converted yet because we'd need to calculate over metrics from two different data sources: restbase GET/s (graphite) and varnish restbase backend GET/s (prometheus). @Krinkle @Pchelolo according to dashboard versions you have changed the dashboard, would it be problematic if we drop "REST API Varnish hit rate (GETs, %)" until at least we have restbase req/s in prometheus?
[x] db/experimental-backend-5xx (Experimental - backend 5xx)
Scheduled to be deleted, unused
[] db/maps-performances [Maps performances](https://grafana.wikimedia.org/d/000000305/maps-performances?orgId=1)
Prometheus version at https://grafana.wikimedia.org/d/kcAMMw4Wk/maps-performances-filippo-t184942
Latest authors were @MSantos and @Mathew.onipe, could you take a look at the Prometheus version of the dashboard and let me know what you think? If it looks good we can replace the current version with it.
[x] db/media (Media)
Fixed
[x] db/wdqs-paper-data [WDQS Paper data](https://grafana.wikimedia.org/d/000000514/wdqs-paper-data?orgId=1)
Scheduled to be deleted, can be recreated if needed (cc @Smalyshev)
[x] db/wikidata-query-service-frontend [Wikidata Query Service Frontend](https://grafana.wikimedia.org/d/000000522/wikidata-query-service-frontend?orgId=1)
Updated with Prometheus Varnish metrics (cc @Smalyshev)