K8S redis 部署的项目实践

# ConfigMap存储Redis配置
apiVersion: v1
kind: ConfigMap
metadata:
  name: redis-config
data:
  redis.conf: |
    bind 0.0.0.0
    port 6379
    requirepass your_secure_password  # 替换为实际密码
    appendonly yes
    dir /data

---
# 密码Secret
apiVersion: v1
kind: Secret
metadata:
  name: redis-secret
type: Opaque
data:
  password: eW91cl9zZWN1cmVfcGFzc3dvcmQ=  # base64编码密码

---
# StatefulSet定义
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: redis
spec:
  serviceName: redis-headless
  replicas: 1  # 单实例
  selector:
    matchLabels:
      app: redis
  template:
    metadata:
      labels:
        app: redis
    spec:
      containers:
      - name: redis
        image: redis:7.0.12
        command: ["redis-server", "/etc/redis/redis.conf"]
        ports:
        - containerPort: 6379
        volumeMounts:
        - name: config
          mountPath: /etc/redis
        - name: data
          mountPath: /data
        env:
        - name: REDIS_PASSWORD  # 从Secret注入密码
          valueFrom:
            secretKeyRef:
              name: redis-secret
              key: password
      volumes:
      - name: config
        configMap:
          name: redis-config
  volumeClaimTemplates:  # 动态PVC
  - metadata:
      name: data
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: "nfs-redis"  # 需提前创建NFS StorageClass
      resources:
        requests:
          storage: 5Gi

---
# Headless Service（内部DNS）
apiVersion: v1
kind: Service
metadata:
  name: redis-headless
spec:
  clusterIP: None
  selector:
    app: redis
  ports:
  - port: 6379
    name: redis

---
# NodePort Service（外部访问）
apiVersion: v1
kind: Service
metadata:
  name: redis-external
spec:
  type: NodePort
  selector:
    app: redis
  ports:
  - port: 6379
    targetPort: 6379
    nodePort: 31000  # 自定义端口范围30000-32767

kubectl apply -f redis-statefulset.yaml

# 修改StatefulSet部分
spec:
  replicas: 6  # 6节点
  template:
    spec:
      containers:
      - env:
        - name: REDIS_CLUSTER_ENABLED  # 启用集群模式
          value: "yes"
# 其他部分与单实例相同

# 进入任意Redis Pod执行集群初始化
kubectl exec -it redis-0 -- redis-cli -a your_password \
  --cluster create \
  $(kubectl get pods -l app=redis -o jsonpath='{range.items[*]}{.status.podIP}:6379 ') \
  --cluster-replicas 1

# 检查资源状态
kubectl get statefulset,pvc,svc -l app=redis

# 测试单实例连接
kubectl exec -it redis-0 -- redis-cli -a your_password ping

# 查看集群状态（集群模式）
kubectl exec -it redis-0 -- redis-cli -a your_password cluster nodes