promethues operator 部署后不能发现其他namespace的metrics，如何打开，附设置grafana

默认部署promethues operator后，不能发现不同namespace下的metrics，通过查找修改

promtheus-clusterRole.yaml

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: prometheus-k8s
rules:
- apiGroups:
  - ""
  resources:
  - nodes
  - services
  - endpoints
  - pods
  verbs: ["get", "list", "watch"]
- nonResourceURLs:
  - /metrics
  verbs:
  - get

设置grafana的时候开始nginx的老打开不对，最后发现应该是倒入的nginx的模板不对，倒入9614成功