redis-exporter测试

一、实验方式

1. 使用sidecar模式运行reids+redis-exporter
2. prometheus中添加redis的抓取任务
3. web页面查看

二、创建reids及redis-exporter

cat prome-redis.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis
  namespace: monitoring　　#此处与prometheus在同一命名空间
spec:
  replicas: 1
  selector:
    matchLabels:
      app: redis
  template:
    metadata:
      annotations:
        prometheus.io/scrape: "true"
        prometheus.io/port: "9121"
      labels:
        app: redis
    spec:
      containers:
      - name: redis
        image: redis:4
        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---
kind: Service
apiVersion: v1
metadata:
  name: redis
  namespace: monitoring
spec:
  selector:
    app: redis
  ports:
  - name: redis
    port: 6379
    targetPort: 6379
  - name: prom
    port: 9121
    targetPort: 9121

三、添加redis的抓取任务

cat prometheus-redis.yaml 
- job_name: 'redis'
  static_configs:
  - targets: ['redis:9121']

将文件制作成secret挂载到prometheus
kubectl create secret generic prometheus-redis  --from-file=prometheus-redis.yaml -n monitoring

在 prometheus-prometheus.yaml 中增加以下内容

  additionalScrapeConfigs:　　#增加scrape-config配置
    name: prometheus-redis
    key: prometheus-redis.yaml