[k8s] 最简单的集群小案例-记录本(tomcat+mysql)

启动一个简单的集群: tomcat+mysql

myweb-pod.yaml

apiVersion: v1

kind: Pod

metadata:

  name: myweb

  labels:

    app: myweb

spec:

  containers:

  - name: myweb

    image: kubeguide/tomcat-app:v1

    ports:

    - containerPort: 8080

    env:

    - name: MYSQL_SERVICE_HOST

      value: 'mysql'

    - name: MYSQL_SERVICE_PORT

      value: '3306'

myweb-rc.yaml

apiVersion: v1

kind: ReplicationController

metadata:

  name: myweb

spec:

  replicas: 5

  selector:

    app: myweb

  template:

    metadata:

      labels:

        app: myweb

    spec:

      containers:

      - name: myweb

        image: kubeguide/tomcat-app:v1

        ports:

        - containerPort: 8080

        env:

        - name: MYSQL_SERVICE_HOST

          value: 'mysql'

        - name: MYSQL_SERVICE_PORT

          value: '3306'

myweb-svc.yaml

apiVersion: v1

kind: Service

metadata:

  name: myweb

spec:

  type: NodePort

  ports:

    - port: 8080

      nodePort: 30001

  selector:

    app: myweb