Investigate service selection not working

[mariomac]

From public slack: https://grafana.slack.com/archives/C05T4PW9E85/p1705676217162779

This discovery section did not work finding the require pod:

    discovery:
      services:
        - k8s_pod_name: "^grafana-0$"

kubectl -n observability get pod
NAME        READY   STATUS    RESTARTS   AGE
grafana-0   6/6     Running   0          4d11h

The following change made it work:

    discovery:
      services:
        - k8s_namespace: observability
        - k8s_pod_name: grafana-0

[nlamirault]

it works with this configuration:

discovery:
  services:
    - k8s_namespace: observability
    - k8s_pod_name: grafana-0