添加redis 集群监控

在集群外部运行redis-exporter

tar -xf redis_exporter-v0.34.1.linux-amd64.tar.gz
mv redis_exporter /usr/bin
nohup redis_exporter -redis-only-metrics -redis.addr 10.111.12.73:10700,10.111.12.73:10800,10.111.12.73:10900,10.111.12.74:10700,10.111.12.74:10800,10.111.12.74:10900 &

集群内部无法添加 -redis.addr参数，原因已找到
arg 参数需要使用“=”连接应用参数，不能使用空格

创建集群外部redis的endpoints和svc

vim prometheus-redis-exporter-svc.yaml
---
apiVersion: v1
kind: Service
metadata:
  name: redis-exporter
  namespace: kube-system
  labels:
    k8s-app: redis
spec:
  type: ClusterIP
  clusterIP: None
  ports:
  - protocol: TCP
    port: 9121
    name: metrics
---
apiVersion: v1
kind: Endpoints
metadata:
  name: redis-exporter
  namespace: kube-system
  labels:
    k8s-app: redis
subsets:
- addresses:
  - ip: 10.111.12.73
    nodeName: redis-exporter
  ports:
  - name: metrics
    port: 9121
    protocol: TCP

创建serviceMonitor

vim prometheus-redis-exporter-serviceMonitor.yaml
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: redis-exporter
  namespace: monitoring
  labels:
    k8s-app: redis
spec:
  jobLabel: k8s-app
  endpoints:
  - port: metrics
    interval: 30s
    scheme: http
  selector:
    matchLabels:
      k8s-app: redis
  namespaceSelector:
    matchNames:
    - kube-system

在集群内部运行redis-exporter

deployment文件

vim prometheus-redis-exporter-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  namespace: monitoring
  name: redis-exporter
  labels:
    k8s-app: redis
spec:
  replicas: 1
  selector: 
    matchLabels:
      k8s-app: redis
  template:
    metadata:
      labels:
        k8s-app: redis
    spec:
      terminationGracePeriodSeconds: 10
      containers:
      - name: redis-exporter
        image: 10.111.9.72/prometheus/redis_exporter:v0.34.1
        args:
          - -redis-only-metrics 
          - -redis.addr=10.111.12.73:10700,10.111.12.73:10800,10.111.12.73:10900,10.111.12.74:10700,10.111.12.74:10800,10.111.12.74:10900
        ports:
          - containerPort: 9121
            name: redis-exporter
        volumeMounts:
          - mountPath: /etc/localtime
            name: localtime
      volumes:
        - hostPath:
            path: /etc/localtime
            type: File
          name: localtime
      nodeSelector:
        decided: system
      tolerations:
      - key: decided
        operator: Equal
        value: system
        effect: NoSchedule

redis-svc文件

vim prometheus-redis-exporter-svc.yaml
---
apiVersion: v1
kind: Service
metadata:
  name: redis-exporter
  namespace: monitoring
  labels:
    k8s-app: redis
spec:
  selector:
    k8s-app: redis
  type: ClusterIP
  clusterIP: None
  ports:
  - protocol: TCP
    port: 9121
    name: metrics

redis serviceMonitor文件

vim prometheus-redis-exporter-serviceMonitor.yaml
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: redis-exporter
  namespace: monitoring
  labels:
    k8s-app: redis
spec:
  jobLabel: k8s-app
  endpoints:
  - port: metrics
    interval: 30s
    scheme: http
  selector:
    matchLabels:
      k8s-app: redis
  namespaceSelector:
    matchNames:
    - monitoring

grafana json文件见附件