在k8s中安装kafka集群说明

本文主要参考以下博文进行试验：https://www.cnblogs.com/00986014w/p/9561901.html和https://my.oschina.net/jianming/blog/2870757

一、安装单节点kafka

1）用kubectl apply -f 创建zookeeper服务

zookeeper-svc.yaml内容如下：

apiVersion: v1

kind: Service

metadata:

  labels:

    app: zookeeper-service

  name: zookeeper-service

spec:

  ports:

  - name: zookeeper-port

    port: 2181

    targetPort: 2181

  selector:

app: zookeeper

zookeeper-deployment.yaml内容如下：

apiVersion: extensions/v1beta1

kind: Deployment

metadata:

  labels:

    app: zookeeper

  name: zookeeper

spec:

  replicas: 1

  template:

    metadata:

      labels:

        app: zookeeper

    spec:

      containers:

      - image: wurstmeister/zookeeper

        imagePullPolicy: IfNotPresent

        name: zookeeper

        ports:

        - containerPort: 2181

2）等zookeeper pod变成running后继续创建kafka。

kafka-svc.yaml的内容如下：

apiVersion: v1

kind: Service

metadata:

  name: kafka-service

  labels:

    app: kafka

spec:

  type: NodePort

  ports:

  - port: 9092

    name: kafka-port

    targetPort: 9092

    nodePort: 30092

    protocol: TCP

  selector:

app: kafka

kafka-deployment.yaml的内容如下：

kind: Deployment

apiVersion: extensions/v1beta1

metadata:

  name: kafka-deployment

spec:

  replicas: 1

  selector:

    matchLabels:

      name: kafka

  template:

    metadata:

      labels:

        name: kafka

        app: kafka

    spec:

      containers:

      - name: kafka

        image: wurstmeister/kafka

        imagePullPolicy: IfNotPresent

        ports:

        - containerPort: 9092

        env:

        - name: KAFKA_ADVERTISED_PORT

          value: "9092"

        - name: KAFKA_ADVERTISED_HOST_NAME

          value: "[kafka-service-clusterIP]"

        - name: KAFKA_ZOOKEEPER_CONNECT

          value: “[zookeeper-service-clusterIP]:2181”

        - name: KAFKA_BROKER_ID

          value: "1"

注意上面[kafka-service-clusterIP]和[zookeeper-service-clusterIP]应换成对应服务真实的clusterIP，如下面图中的10.106.64.111和10.99.59.195