prometheus: Can't direct Headlamp to retrieve metrics on a sub-path of a Prometheus(-like) query service

[plevart]

Hi,

I entered an issue to headlamp repo: headlamp-k8s/headlamp#2607, when I should have entered it here. So I'll just copy-paste it over here too.

In my cluster(s) I deploy VictoriaMetrics stack (a Prometheus equivalent) which exposes an endpoint for querying metrics using Prometheus-compatible API on a sub-path within the HTTP Service. In Lens, for example, I specify the following to display metrics:

vmstack/vmselect-vmstack-victoria-metrics-k8s-stack:8481//select/0/prometheus

Trying to enter such string into the Headlamp setting called "Prometheus Service Address", it displays an error below the field:

Invalid format. Use: namespace/service-name:port

If I just enter this:

vmstack/vmselect-vmstack-victoria-metrics-k8s-stack:8481

...it of course doesn't work.

Would it be possible to enable specifying the sub-path in this field too?

[NachoxMacho]

I couldn't currently find a way to accomplish this for mimir, which has a similar problem of being on a sub-path. Should probably make sure if #111 gets fixed this one also gets fixed