k8s部署mongodb副本高可用集群

以下是一个简化的Kubernetes部署MongoDB副本集的高可用集群的YAML配置示例。这个配置假设你已经有了一个运行的Kubernetes集群，并且你已经创建了必要的服务账号和角色绑定以允许Kubelet访问Docker Hub或其他容器镜像仓库。

apiVersion: v1
kind: Service
metadata:
  name: mongo
  labels:
    name: mongo
spec:
  ports:
  - port: 27017
    targetPort: 27017
  clusterIP: None
  selector:
    role: mongo
 
---

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mongo-pv-claim
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 250Mi
 
---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mongo-deployment
spec:
  replicas: 3
  selector:
    matchLabels:
      role: mongo
  template:
    metadata:
      labels:
        role: mongo
    spec:
      containers:
      - name: mongo
        image: mongo
        ports:
        - containerPort: 27017
        volumeMounts:
        - name: mongo-persistent-storage
          mountPath: /data/db
        env:
          - name: MONGO_INITDB_ROOT_USERNAME
            value: your-username
          - name: MONGO_INITDB_ROOT_PASSWORD
            value: your-password
        args:
          - "--replSet"
          - "rs0"
        resources:
          requests:
            cpu: "0.5"
            memory: "256Mi"
          limits:
            cpu: "1"
            memory: "512Mi"
      volumes:
      - name: mongo-persistent-storage
        persistentVolumeClaim:
          claimName: mongo-pv-claim
 
---

apiVersion: v1
kind: Pod
metadata:
  name: mongo-init-container
spec:
  initContainers:
  - name: mongo-init-container
    image: mongo
    command: ["mongoinit.sh"]
    volumeMounts:
    - name: mongo-persistent-storage
      mountPath: /data/db
  containers:
  - name: mongo
    image: mongo
    ports:
    - containerPort: 27017
    volumeMounts:
    - name: mongo-persistent-storage
      mountPath: /data/db
    env:
      - name: MONGO_INITDB_ROOT_USERNAME
        value: your-username
      - name: MONGO_INITDB_ROOT_PASSWORD
        value: your-password
      - name: MONGO_INITDB_REPLICA_SET
        value: rs0
    resources:
      requests:
        cpu: "0.5"
        memory: "256Mi"
      limits:
        cpu: "1"
        memory: "512Mi"
  volumes:
    - name: mongo-persistent-storage
      persistentVolumeClaim:
        claimName: mongo-pv-