k8s prometheus展示数据对象

k8s-prometheus展示数据对象

1. k8s-prometheus+grafana展示

• 编写grafana展示的配置文件

  [root@k8s-master prometheus]# cat grafana.yaml 
  apiVersion: apps/v1 
  kind: Deployment 
  metadata:
    name: grafana
    namespace: ops
  spec:
    replicas: 1
    selector:
      matchLabels:
        app: grafana
    template:
      metadata:
        labels:
          app: grafana
      spec:
        containers:
        - name: grafana
          image: grafana/grafana:7.1.0
          ports:
            - containerPort: 3000
              protocol: TCP
          resources:
            limits:
              cpu: 100m            
              memory: 256Mi          
            requests:
              cpu: 100m            
              memory: 256Mi
          volumeMounts:
            - name: grafana-data
              mountPath: /var/lib/grafana
              subPath: grafana
        securityContext:
          fsGroup: 472
          runAsUser: 472
        volumes:
        - name: grafana-data
          persistentVolumeClaim:
            claimName: grafana 
  ---
  apiVersion: v1
  kind: PersistentVolumeClaim
  metadata:
    name: grafana 
    namespace: ops
  spec:
    storageClassName: "managed-nfs-storage"
    accessModes:
      - ReadWriteMany
    resources:
      requests:
        storage: 5Gi
  ---
  apiVersion: v1
  kind: Service
  metadata:
    name: grafana
    namespace: ops
  spec:
    type: NodePort
    ports:
    - port : 80
      targetPort: 3000
      nodePort: 30030
    selector:
      app: grafana
  

2. 案例

• 执行配置文件

  [root@k8s-master prometheus]# kubectl apply -f grafana.yaml 
  deployment.apps/grafana unchanged
  persistentvolumeclaim/grafana unchanged
  service/grafana unchanged
  

• 查看是否启动

  [root@k8s-master prometheus]# kubectl get pods,svc -n ops
  NAME                              READY   STATUS    RESTARTS   AGE
  pod/grafana-757fcd5f7c-twbmj      1/1     Running   0          40m
  pod/prometheus-859dbbc5f7-rlsqp   2/2     Running   0          22h
  
  NAME                 TYPE       CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
  service/grafana      NodePort   10.108.238.42   <none>        80:30030/TCP     40m
  service/prometheus   NodePort   10.108.53.165   <none>        9090:30090/TCP   22h
  

• 浏览器访问测试：http://ip:30030
  

  初次用户名和密码都是admin/admin

• grafana我们要添加数据源
  
  
  
  

  验证数据源添加是否正确
  

  发现已经有了

• 导入图表
  
  
  
  
  
  

  发现已经有数据了

• 部署node节点监控

  [root@k8s-master prometheus]# kubectl apply -f node-exporter.yml 
  daemonset.apps/node-exporter created
  service/node-exporter created
  

  [root@k8s-master prometheus]# kubectl get pods,svc -n ops
  NAME                              READY   STATUS    RESTARTS   AGE
  pod/grafana-757fcd5f7c-twbmj      1/1     Running   0          62m
  pod/node-exporter-27zdq           1/1     Running   0          2m6s
  pod/node-exporter-ftrhc           1/1     Running   0          2m6s
  pod/prometheus-859dbbc5f7-rlsqp   2/2     Running   0          23h
  
  NAME                    TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
  service/grafana         NodePort    10.108.238.42   <none>        80:30030/TCP     62m
  service/node-exporter   ClusterIP   None            <none>        9100/TCP         2m6s
  service/prometheus      NodePort    10.108.53.165   <none>        9090:30090/TCP   23h
  

• k8s资源对象监控

  [root@k8s-master prometheus]# kubectl apply -f kube-state-metrics.yaml 
  deployment.apps/kube-state-metrics created
  configmap/kube-state-metrics-config created
  service/kube-state-metrics created
  serviceaccount/kube-state-metrics created
  clusterrole.rbac.authorization.k8s.io/kube-state-metrics created
  role.rbac.authorization.k8s.io/kube-state-metrics-resizer created
  clusterrolebinding.rbac.authorization.k8s.io/kube-state-metrics created
  rolebinding.rbac.authorization.k8s.io/kube-state-metrics created
  
  

  [root@k8s-master prometheus]# kubectl get pods -n ops
  NAME                                  READY   STATUS    RESTARTS   AGE
  grafana-757fcd5f7c-twbmj              1/1     Running   0          3h8m
  kube-state-metrics-667bc48f47-cwg8p   2/2     Running   0          116s
  node-exporter-27zdq                   1/1     Running   0          128m
  node-exporter-ftrhc                   1/1     Running   0          128m
  prometheus-859dbbc5f7-rlsqp           2/2     Running   0          25h