Scrape kubelet & cAdvisor metrics using ServiceMonitor below

servicemonitor-kubelet.yaml

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  labels:
    app: kubelet
    scraper: prometheus-agent
  name: kubelet
spec:
  endpoints:
    - bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
      honorLabels: true
      interval: 30s
      port: https-metrics
      scheme: https
      tlsConfig:
        insecureSkipVerify: true
    - bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
      honorLabels: true
      interval: 30s
      path: /metrics/cadvisor
      port: https-metrics
      scheme: https
      tlsConfig:
        insecureSkipVerify: true
      relabelings:
        - sourceLabels: [__name__]
          action: drop
          regex: "container_cpu_(cfs_throttled_seconds_total|load_average_10s|system_seconds_total|user_seconds_total)"
        # Drop less useful container / always zero filesystem metrics.
        - sourceLabels: [__name__]
          action: drop
          regex: "container_fs_(io_current|io_time_seconds_total|io_time_weighted_seconds_total|reads_merged_total|sector_reads_total|sector_writes_total|writes_merged_total)"
        # Drop less useful / always zero container memory metrics.
        - sourceLabels: [__name__]
          action: drop
          regex: "container_memory_(mapped_file|swap)"
        # Drop less useful container process metrics.
        - sourceLabels: [__name__]
          action: drop
          regex: "container_(file_descriptors|tasks_state|threads_max)"
        # Drop container spec metrics that overlap with kube-state-metrics.
        - sourceLabels: [__name__]
          action: drop
          regex: "container_spec.*"
        # Drop cgroup metrics with no pod.
        - sourceLabels: [id, pod]
          action: drop
          regex: ".+;"
  jobLabel: k8s-app
  namespaceSelector:
    matchNames:
      - kube-system
  selector:
    matchLabels:
      k8s-app: kubelet