k8s 监控 kube-prometheus(0.5.0)

k8s version ： 1.18.2
kube-prometheus-v0.5.0下载：
https://github.com/coreos/kube-prometheus/releases

##直接通过配置文件部署(执行两遍，有的文件第一次读取不到)
kubectl apply -f manifests/setup -f manifests/
##卸载prometheus
kubectl delete --ignore-not-found=true -f manifests/setup -f manifests/

监控部署之后需要额外的给“prometheus-k8s” clusterrole添加权限，添加后完整yaml如下：

kind: ClusterRole
metadata:
  labels:
    app.kubernetes.io/component: prometheus
    app.kubernetes.io/name: prometheus
    app.kubernetes.io/part-of: kube-prometheus
    app.kubernetes.io/version: 2.29.1
  name: prometheus-k8s
rules:
  - apiGroups:
      - ''
    resources:
      - nodes/metrics
    verbs:
      - get
  - nonResourceURLs:
      - /metrics
    verbs:
      - get
  - apiGroups:
      - ''
    resources:
      - endpoints
      - pods
      - services
    verbs:
      - get
      - watch
      - list