I installed stable/prometheus from helm. By default the job_name kubernetes-service-endpoints contains node-exporter and kube-state-metrics as component label. I added the below configuration in prometheus.yml to include namespace, pod and node labels.

      - source_labels: [__meta_kubernetes_namespace]
        separator: ;
        regex: (.*)
        target_label: namespace
        replacement: $1
        action: replace
      - source_labels: [__meta_kubernetes_pod_name]
        separator: ;
        regex: (.*)
        target_label: pod
        replacement: $1
        action: replace
      - source_labels: [__meta_kubernetes_pod_node_name]
        separator: ;
        regex: (.*)
        target_label: node
        replacement: $1
        action: replace

kube_pod_info{component="kube-state-metrics"} already had namespace, pod and node labels and hence exported_labels were generated. And the metric node_cpu_seconds_total{component="node-exporter"} now correctly has labels namespace, pod and node.

To have these labels correctly, I need to have these 3 labels present in both the above metric names. To achieve that I can override value of exported_labels. I tried adding the below config but to no avail.

      - source_labels: [__name__, exported_pod]
        regex: "kube_pod_info;(.+)"
        target_label: pod
      - source_labels: [__name__, exported_namespace]
        regex: "kube_pod_info;(.+)"
        target_label: namespace
      - source_labels: [__name__, exported_node]
        regex: "kube_pod_info;(.+)"
        target_label: node

Similar approach was mentioned here. I can't see the issue with my piece of code. Any directions to resolve would be very helpful.

Updated - (adding complete job)

    - job_name: kubernetes-service-endpoints
      kubernetes_sd_configs:
      - role: endpoints

      metric_relabel_configs:
      - source_labels: [__name__, exported_pod]
        regex: "kube_pod_info;(.+)"
        target_label: pod
      - source_labels: [__name__, exported_namespace]
        regex: "kube_pod_info;(.+)"
        target_label: namespace
      - source_labels: [__name__, exported_node]
        regex: "kube_pod_info;(.+)"
        target_label: node

      relabel_configs:
      - action: keep
        regex: true
        source_labels:
        - __meta_kubernetes_service_annotation_prometheus_io_scrape
      - action: replace
        regex: (https?)
        source_labels:
        - __meta_kubernetes_service_annotation_prometheus_io_scheme
        target_label: __scheme__
      - action: replace
        regex: (.+)
        source_labels:
        - __meta_kubernetes_service_annotation_prometheus_io_path
        target_label: __metrics_path__
      - action: replace
        regex: ([^:]+)(?::\d+)?;(\d+)
        replacement: $1:$2
        source_labels:
        - __address__
        - __meta_kubernetes_service_annotation_prometheus_io_port
        target_label: __address__
      - action: labelmap
        regex: __meta_kubernetes_service_label_(.+)
      - action: replace
        source_labels:
        - __meta_kubernetes_namespace
        target_label: namespace
      - action: replace
        regex: (.*)
        replacement: $1
        separator: ;
        source_labels:
        - __meta_kubernetes_pod_name
        target_label: pod
      - action: replace
        source_labels:
        - __meta_kubernetes_pod_node_name
        target_label: node

And the result from promql