How to configure Prometheus service monitor for a flatcar containerized K8S cluster

[Nagaraj]

I have a K8S cluster built using flatcar image beta version. I'm trying to configure Prometheus monitor service for the cluster. What should be the ApiVersion for the service monitor config.

apiVersion: monitoring.coreos.com/v1 ---> What should be the api url for flatcar.

kind: ServiceMonitor

metadata:

      labels:

             app.kubernetes.io/component: controller

             app.kubernetes.io/name: prometheus-operator

[Iago López Galeiras]

Hi,

You should use the same apiVersion.

The apiVersion field is related to the versioning of the ServiceMonitor kind in the cluster. This means that if the definition of a ServiceMonitor object changes, the apiVersion should change too.

In this case the ServiceMonitor kind is defined by the Prometheus Operator, which is a project that originated at CoreOS (the company), and that's why there's a coreos.com mention in the apiVersion of ServiceMonitor. This is only related to the Prometheus Operator and has nothing to do with Flatcar, so no change is necessary when switching to Flatcar Container Linux.

Cheers,

Iago

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