charts/wire-server-metrics: drop

[flokli]

This seems to have gotten broken, it complains about some resources that can't be found:

level=error ts=2022-09-30T08:09:08.703284478Z caller=klog.go:116 component=k8s_client_runtime func=ErrorDepth msg="status \"default/wire-server-metrics-kube-p-prometheus\" failed: failed to update status subresource: prometheuses.monitoring.coreos.com \"wire-server-metrics-kube-p-prometheus\" not found"

Describing how to install a monitoring system, shipping our own wrapper chart, and documenting how to install it shouldn't be something we did in first place. It's a potential endless game of whack-a-mole with upstream changes, and mirroring it downstream in our documentation shouldn't be part of wire-server.

Instead, describe what wire-server can do, how it marks its metrics endpoints via ServiceMonitor, and refer to the upstream docs of two commonly used metrics operators.

Checklist

• Add a new entry in an appropriate subdirectory of changelog.d
• Read and follow the PR guidelines

[amitsagtani97]

I used https://prometheus-operator.dev/docs/prologue/quick-start instead of kube-prometheus-stack chart to run the wire-server-metrics and it worked fine for me.
As compared to previous configs -
I had to create a Prometheus datasource and upload dashboards manually.

[flokli]

I used https://prometheus-operator.dev/docs/prologue/quick-start instead of kube-prometheus-stack chart to run the wire-server-metrics and it worked fine for me.

Thanks for the report! Nice to hear it worked for you!

As compared to previous configs - I had to create a Prometheus datasource and upload dashboards manually.

That's documented in https://github.com/wireapp/wire-server/pull/2740/files#diff-cdd6ec92e849a7c32afdb1f9e79c0fc8195f86a9cbfbb2ce52dd892e66306251R20-R21