Prometheus Scrape Configs Label with Slash-CodePudding

Trying to filter out some services with a relabel_config. On the target I have a label app.kubernetes.io/name with a value of kube-state-metrics.

When I set up my relabel-configs I realized the . and the / are not valid according to the Prometheus documentation. I get an error complaining of these invalid characters. Outside of adding a new label on to this service, is this achievable the way it sets? Most Helm charts use this label convention so it would be a lot of work to add additional labels for everything, hoping to avoid it.

relabel_configs:
   - source_labels: [app.kubernetes.io/name]
     action: keep
     regex: kube-state-metrics

CodePudding user response：

Prometheus changes dots . and slashes / to underscores _ during service discovery, so you need to replace them as well: app_kubernetes_io_name. But this isn't the end, you may also need to add __meta_kubernetes_pod_label_ prefix to it:

- job_name: 'pods'
 kubernetes_sd_configs:
 - role: pod
 relabel_configs:
 - source_labels: [__meta_kubernetes_pod_label_app_kubernetes_io_name]
   action: keep
   regex: kube-state-metrics