title: Running simple kafka instance on kubernetes
body: <p>I am new to the Kubernetes and trying to deploy a single replica kafka instance on the single node minikube cluster.</p>
  <p>Here is the zookeeper service/deployment yml</p>
  <pre><code>apiVersion: v1
  kind: Service
  metadata:
    name: zookeeper-cluster
    labels:
      component: zookeeper
  spec:
    ports:
    - name: &quot;2181&quot;
      port: 2181
      targetPort: 2181
    selector:
      component: zookeeper
  status:
    loadBalancer: {}
  
  ---
  
  apiVersion: apps/v1
  kind: Deployment
  metadata:
    labels:
      component: zookeeper
    name: zookeeper
  spec:
    replicas: 1
    strategy:
      type: Recreate
    selector:
      matchLabels:
        component: zookeeper      
    template:
      metadata:
        labels:
          component: zookeeper
      spec:
        containers:
        - image: zookeeper:3.4.13
          name: zookeeper
          ports:
          - containerPort: 2181
          resources:
            limits:
              memory: &quot;256Mi&quot;
              cpu: &quot;100m&quot;
          volumeMounts:
          - mountPath: /conf
            name: zookeeper-claim0
          - mountPath: /data
            name: zookeeper-claim1
          - mountPath: /datalog
            name: zookeeper-claim2
        restartPolicy: Always
        volumes:
        - name: zookeeper-claim0
          persistentVolumeClaim:
            claimName: zookeeper-claim0
        - name: zookeeper-claim1
          persistentVolumeClaim:
            claimName: zookeeper-claim1
        - name: zookeeper-claim2
          persistentVolumeClaim:
            claimName: zookeeper-claim2
  status: {}
  </code></pre>
  <p>and here is the Kafka service/deployment yml</p>
  <pre><code>apiVersion: v1
  kind: Service
  metadata:
    name: kafka-cluster
    labels:
      component: kafka
  spec:
    ports:
    - name: &quot;9092&quot;
      port: 9092
      targetPort: 9092
    selector:
      component: kafka
  status:
    loadBalancer: {}
  
  ---
  
  apiVersion: apps/v1
  kind: Deployment
  metadata:
    labels:
      component: kafka
    name: kafka
  spec:
    replicas: 1
    strategy:
      type: Recreate
    selector:
      matchLabels:
        component: kafka    
    template:
      metadata:
        labels:
          component: kafka
      spec:
        containers:
        - args:
          - start-kafka.sh
          env:
          - name: KAFKA_INTER_BROKER_LISTENER_NAME
            value: LISTENER_BOB
          - name: KAFKA_ADVERTISED_LISTENERS
            value: LISTENER_BOB://:9092
          - name: KAFKA_LISTENERS
            value: LISTENER_BOB://:9092
          - name: KAFKA_LISTENER_SECURITY_PROTOCOL_MAP
            value:  LISTENER_BOB:PLAINTEXT
          - name: KAFKA_BROKER_ID
            value: &quot;1&quot;
          - name: KAFKA_LOG_DIRS
            value: /kafka/kafka-logs
          - name: KAFKA_ZOOKEEPER_CONNECT
            value: zookeeper-cluster:2181
          image: wurstmeister/kafka:2.12-2.4.1
          name: kafka
          ports:
          - containerPort: 9092
          resources:
            limits:
              memory: &quot;256Mi&quot;
              cpu: &quot;200m&quot;
          volumeMounts:
          - mountPath: /kafka/kafka-logs
            name: kafka-claim0
        restartPolicy: Always
        volumes:
        - name: kafka-claim0
          persistentVolumeClaim:
            claimName: kafka-claim0
  status: {}
  </code></pre>
  <p>When trying to access the kafka from another application on kafka-cluster:9092, which is also running as a deployment, it throws an UnresolvedAddressException. where kafka-6799c65d58-f6tbt:9092 is the pod name</p>
  <pre><code>java.io.IOException: Can't resolve address: **kafka-6799c65d58-f6tbt:9092**
      at org.apache.kafka.common.network.Selector.doConnect(Selector.java:235)
      at org.apache.kafka.common.network.Selector.connect(Selector.java:214)
      at org.apache.kafka.clients.NetworkClient.initiateConnect(NetworkClient.java:864)
      at org.apache.kafka.clients.NetworkClient.access$700(NetworkClient.java:64)
      at org.apache.kafka.clients.NetworkClient$DefaultMetadataUpdater.maybeUpdate(NetworkClient.java:1035)
      at org.apache.kafka.clients.NetworkClient$DefaultMetadataUpdater.maybeUpdate(NetworkClient.java:920)
      at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:508)
      at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:239)
      at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:163)
      at java.base/java.lang.Thread.run(Thread.java:835)
  Caused by: java.nio.channels.UnresolvedAddressException: null
      at java.base/sun.nio.ch.Net.checkAddress(Net.java:130)
      at java.base/sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:675)
      at org.apache.kafka.common.network.Selector.doConnect(Selector.java:233)
      ... 9 common frames omitted 
  </code></pre>
  <p>Am I making any mistake while configuring it? or is there any alternative to it?</p>