Jsonnet: make scrape_configs in configmap configurable

[yeya24]

Now in the jsonnet lib, the configmap is very basic and doesn't support adding additional scrape configs. For us who still rely on getting memory profiles via /pprof, it is not easy to configure it now.

[maxbrunet]

I have written a couple rudimentary Jsonnet functions that provide an experience similar to PodMonitor/ServiceMonitor from the prometheus-operator (promcfg.go), but not sure if this is something you would want to deal with in the repo at this point (a parca operator would be better but definitly way too early for that)

[yeya24]

@maxbrunet That would be very helpful for us!

[metalmatze]

Very cool. Yeah, I'm not sure if we want these objects directly in Parca itself. We never really discussed a Parca Operator so far, so it'd be interesting to get other opinions on this matter. :relaxed:

[maxbrunet]

I have shared the utilities here for now: https://github.com/maxbrunet/parca-jsonnet-libs

Basically, s/(Pod|Service)Monitors/\1Profilers/.

Here is the interesting usage bit: maxbrunet/parca-jsonnet-libs@743f821/examples/parca.libsonnet#L10-L69

Their implementation:

• maxbrunet/parca-jsonnet-libs@main/scrape-configs/podprofilers.libsonnet
• maxbrunet/parca-jsonnet-libs@main/scrape-configs/serviceprofilers.libsonnet

Let me know if there is any interest to do something from that.