OpenShift 4.12 grafana的安装

OpenShift 4.11以后在产品中移除了grafana的console,集成到产品的监控界面中去了，这对于我们想要看到原生的以及需要定制的人来说不太方便。

本文就在OpenShift 4.12的环境中安装和部署一个grafana

1.在Operator Hub中安装Grafana Operator,过程略

2.建立Grafana instance, 在yaml中输入（需求修改的地方是password那行)

apiVersion: integreatly.org/v1alpha1
kind: Grafana
metadata:
  name: example-grafana
  namespace: test01
spec:
  ingress:
    enabled: true
  config:
    auth:
      disable_signout_menu: true
    auth.anonymous:
      enabled: true
    log:
      level: warn
      mode: console
    security:
      admin_password: secret
      admin_user: root
  dashboardLabelSelector:
    - matchExpressions:
        - key: app
          operator: In
          values:
            - grafana

部署完成后会看到

[lab-user@bastion ~]$ oc get pods -n my-grafana
NAME                                                   READY   STATUS    RESTARTS   AGE
grafana-deployment-54df498bcb-fptf9                    1/1     Running   0          41m
grafana-operator-controller-manager-6cb659f7d9-bxptz   2/2     Running   0          76m

同时在route中看到路由

 3. 添加权限并建立DataSource Object

oc adm policy add-cluster-role-to-user cluster-monitoring-view -z grafana-serviceaccount

oc create token grafana-serviceaccount --duration=8760h -n my-grafana

创建DataSource Object,用上面建立的token替换${BEARER_TOKEN}

apiVersion: integreatly.org/v1alpha1
kind: GrafanaDataSource
metadata:
  name: prometheus-grafanadatasource
  namespace: my-grafana
spec:
  datasources:
    - access: proxy
      editable: true
      isDefault: true
      jsonData:
        httpHeaderName1: 'Authorization'
        timeInterval: 5s
        tlsSkipVerify: true
      name: Prometheus
      secureJsonData:
        httpHeaderValue1: 'Bearer ${BEARER_TOKEN}'
      type: prometheus
      url: 'https://thanos-querier.openshift-monitoring.svc.cluster.local:9091'
  name: prometheus-grafanadatasource.yaml

建立完成后看到

 4. 登录进入grafana,然后添加相应的json

这一块一直没有找到之前OCP自带的那些json文件，需要找一个以前的环境把图标导出来。当然也有github中的一些例子，但我导入后数据没有

正确显示，参考

https://medium.com/@dotdc/a-set-of-modern-grafana-dashboards-for-kubernetes-4b989c72a4b2

https://github.com/dotdc/grafana-dashboards-kubernetes