prometheus监控k8s中的redis

部署redis和redis-exporter

[root@k8s-master yaml]# kubectl apply -f redis-deployment.yaml
[root@k8s-master yaml]# kubectl apply -f redis-exporter-svc.yaml
[root@k8s-master yaml]# kubectl apply -f redis-redis-svc.yaml
[root@k8s-master yaml]# cat redis-exporter-svc.yaml 
kind: Service  #service 类型
apiVersion: v1
metadata:
  annotations:
    prometheus.io/scrape: 'true'
    prometheus.io/port: "9121"
  name: redis-exporter-service
  namespace: studylinux-net 
spec:
  selector:
    app: redis
  ports:
  - nodePort: 31082
    name: prom
    port: 9121
    protocol: TCP
    targetPort: 9121
  type: NodePort
[root@k8s-master yaml]# cat redis-redis-svc.yaml 
kind: Service  #service 类型
apiVersion: v1
metadata:
  annotations:
    prometheus.io/scrape: 'true'
  name: redis-redis-service
  namespace: studylinux-net 
spec:
  selector:
    app: redis
  ports:
  - nodePort: 31081
    name: redis
    port: 6379
    protocol: TCP
    targetPort: 6379
  type: NodePort
[root@k8s-master yaml]# 
[root@k8s-master yaml]# 
[root@k8s-master yaml]# vim redis-deployment.yaml 
kind: Deployment
metadata:
  name: redis
  namespace: studylinux-net
spec:
  replicas: 1
  selector:
    matchLabels:
      app: redis
  template:
    metadata:
      labels:
        app: redis
    spec:
      containers:
      - name: redis
        image: redis:4.0.14
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
        ports:
        - containerPort: 6379
      - name: redis-exporter
        image: oliver006/redis_exporter:latest
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
        ports:
        - containerPort: 9121
[root@k8s-master yaml]# ll
total 12
-rw-r--r-- 1 root root 632 Dec 17  2021 redis-deployment.yaml
-rw-r--r-- 1 root root 343 Dec 17  2021 redis-exporter-svc.yaml
-rw-r--r-- 1 root root 310 Jun 12 16:38 redis-redis-svc.yaml
[root@k8s-master yaml]# kubectl get svc -n studylinux-net
NAME                     TYPE       CLUSTER-IP     EXTERNAL-IP   PORT(S)          AGE
redis-exporter-service   NodePort   10.105.6.197   <none>        9121:31082/TCP   6m18s
redis-redis-service      NodePort   10.106.75.48   <none>        6379:31081/TCP   6m23s
[root@k8s-master yaml]# 
[root@k8s-master yaml]# 
[root@k8s-master yaml]# ll
total 12
-rw-r--r-- 1 root root 632 Dec 17  2021 redis-deployment.yaml
-rw-r--r-- 1 root root 343 Dec 17  2021 redis-exporter-svc.yaml
-rw-r--r-- 1 root root 310 Jun 12 16:38 redis-redis-svc.yaml
[root@k8s-master yaml]# cat redis-deployment.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis
  namespace: studylinux-net 
spec:
  replicas: 1
  selector:
    matchLabels:
      app: redis
  template:
    metadata:
      labels:
        app: redis
    spec:
      containers:
      - name: redis
        image: redis:4.0.14 
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
        ports:
        - containerPort: 6379
      - name: redis-exporter
        image: oliver006/redis_exporter:latest
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
        ports:
        - containerPort: 9121
[root@k8s-master yaml]# cat redis-redis-svc.yaml 
kind: Service  #service 类型
apiVersion: v1
metadata:
  annotations:
    prometheus.io/scrape: 'true'
  name: redis-redis-service
  namespace: studylinux-net 
spec:
  selector:
    app: redis
  ports:
  - nodePort: 31081
    name: redis
    port: 6379
    protocol: TCP
    targetPort: 6379
  type: NodePort
[root@k8s-master yaml]# cat redis-exporter-svc.yaml 
kind: Service  #service 类型
apiVersion: v1
metadata:
  annotations:
    prometheus.io/scrape: 'true'
    prometheus.io/port: "9121"
  name: redis-exporter-service
  namespace: studylinux-net 
spec:
  selector:
    app: redis
  ports:
  - nodePort: 31082
    name: prom
    port: 9121
    protocol: TCP
    targetPort: 9121
  type: NodePort

浏览器访问redis-exporter-svc看下有没有数据

http://10.211.55.20:31082/metrics

 prometheus添加配置

  - job_name: "prometheus-redis-metrics"
    static_configs:
      - targets: ["10.211.55.20:31082"]

重启

systemctl restart prometheus

访问prometheus

导入模板14615

添加两个key看下监控指标

可以看到监控指标有变化