Prometheus K8S system component service monitoring

One, kube-apiserver

1. The apiserver itself also provides the /metrics api to provide monitoring data

2. Based on the above information, add the following content to the prometheus configuration file

    - job_name: 'kubernetes-apiserver'
      static_configs:
      - targets: ['10.96.0.1']         #apiserver的svc
      scheme: https                    #访问方式，默认是http
      tls_config:                          #因apiserver的调用需有授权认证信息
        ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
        insecure_skip_verify: true
      bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token

#授权的ca与token信息，是存放在prometheus的容器里

3. Apply the configuration file, delete the original pod, restart it again, and reload the configuration file
4. Check the data acquisition situation

二、kube-scheduler

1. Understand the current installation of kube-scheduler

2. Add the prometheus configuration file based on the above information

    - job_name: 'kubernetes-scheduler'
      static_configs:
      - targets: ['10.3.153.200:10251']

3. Reconfigure and verify the effect