Traffy Kafka setup on Kubernetes

@sipp11

README.md

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+# Kafka for Kubernetes
+
+ก็ต้อง `apply -f` หรือ `create -f` ก็แล้วแต่ชอบแหละ ตามลำดับ
+
+    k apply -f ./configure
+    k apply -f ./zookeeper
+    k apply -f ./kafka
+    k apply -f ./kafka-manager
+
+ถ้าต้องการ Test ก็จะเรียกตัวนี้ `kafka-test` มาได้
+
+    k apply -f ./tester
+
+้ถ้าอยาก expose `kafka-manager` ให้เข้าไปจัดการได้ก็
+
+    k apply -f ./loadbalancer
+
+
+## ถ้าอยากจะลบท้้งหมดก็ง่ายเลย
+
+    k delete ns kafka

configure/00-gke-storageclass-broker-pd.yml

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+kind: StorageClass
+apiVersion: storage.k8s.io/v1
+metadata:
+  name: kafka-broker
+provisioner: kubernetes.io/gce-pd
+reclaimPolicy: Retain
+parameters:
+  type: pd-standard

configure/00-gke-storageclass-zookeeper-ssd.yml

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+kind: StorageClass
+apiVersion: storage.k8s.io/v1
+metadata:
+  name: kafka-zookeeper
+provisioner: kubernetes.io/gce-pd
+reclaimPolicy: Retain
+parameters:
+  type: pd-ssd

configure/01-namespace.yml

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+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: kafka

kafka-manager/kafka-manager-service.yml

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+kind: Service
+apiVersion: v1
+metadata:
+  name: kafka-manager
+  namespace: kafka
+spec:
+  selector:
+    app: kafka-manager
+  ports:
+  - protocol: TCP
+    port: 80
+    targetPort: 80

kafka-manager/kafka-manager.yml

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+apiVersion: apps/v1beta2
+kind: Deployment
+metadata:
+  name: kafka-manager
+  namespace: kafka
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: kafka-manager
+  template:
+    metadata:
+      labels:
+        app: kafka-manager
+    spec:
+      containers:
+      - name: kafka-manager
+        image: solsson/kafka-manager@sha256:5db7d54cdb642ec5a92f37a869fdcf2aa479b2552e900b2d2b83b38a1806c2de
+        ports:
+        - containerPort: 80
+        env:
+        - name: ZK_HOSTS
+          value: zookeeper.kafka:2181
+        command:
+        - ./bin/kafka-manager
+        - -Dhttp.port=80

kafka/10broker-config.yml

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+kind: ConfigMap
+metadata:
+  name: broker-config
+  namespace: kafka
+apiVersion: v1
+data:
+  init.sh: |-
+    #!/bin/bash
+    set -x
+    cp /etc/kafka-configmap/log4j.properties /etc/kafka/
+
+    KAFKA_BROKER_ID=${HOSTNAME##*-}
+    SEDS=("s/#init#broker.id=#init#/broker.id=$KAFKA_BROKER_ID/")
+    LABELS="kafka-broker-id=$KAFKA_BROKER_ID"
+    ANNOTATIONS=""
+
+    hash kubectl 2>/dev/null || {
+      SEDS+=("s/#init#broker.rack=#init#/#init#broker.rack=# kubectl not found in path/")
+    } && {
+      ZONE=$(kubectl get node "$NODE_NAME" -o=go-template='{{index .metadata.labels "failure-domain.beta.kubernetes.io/zone"}}')
+      if [ $? -ne 0 ]; then
+        SEDS+=("s/#init#broker.rack=#init#/#init#broker.rack=# zone lookup failed, see -c init-config logs/")
+      elif [ "x$ZONE" == "x<no value>" ]; then
+        SEDS+=("s/#init#broker.rack=#init#/#init#broker.rack=# zone label not found for node $NODE_NAME/")
+      else
+        SEDS+=("s/#init#broker.rack=#init#/broker.rack=$ZONE/")
+        LABELS="$LABELS kafka-broker-rack=$ZONE"
+      fi
+
+      OUTSIDE_HOST=$(kubectl get node "$NODE_NAME" -o jsonpath='{.status.addresses[?(@.type=="InternalIP")].address}')
+      if [ $? -ne 0 ]; then
+        echo "Outside (i.e. cluster-external access) host lookup command failed"
+      else
+        OUTSIDE_PORT=3240${KAFKA_BROKER_ID}
+        SEDS+=("s|#init#advertised.listeners=OUTSIDE://#init#|advertised.listeners=OUTSIDE://${OUTSIDE_HOST}:${OUTSIDE_PORT}|")
+        ANNOTATIONS="$ANNOTATIONS kafka-listener-outside-host=$OUTSIDE_HOST kafka-listener-outside-port=$OUTSIDE_PORT"
+      fi
+
+      if [ ! -z "$LABELS" ]; then
+        kubectl -n $POD_NAMESPACE label pod $POD_NAME $LABELS || echo "Failed to label $POD_NAMESPACE.$POD_NAME - RBAC issue?"
+      fi
+      if [ ! -z "$ANNOTATIONS" ]; then
+        kubectl -n $POD_NAMESPACE annotate pod $POD_NAME $ANNOTATIONS || echo "Failed to annotate $POD_NAMESPACE.$POD_NAME - RBAC issue?"
+      fi
+    }
+    printf '%s\n' "${SEDS[@]}" | sed -f - /etc/kafka-configmap/server.properties > /etc/kafka/server.properties.tmp
+    [ $? -eq 0 ] && mv /etc/kafka/server.properties.tmp /etc/kafka/server.properties
+
+  server.properties: |-
+    ############################# Log Basics #############################
+
+    # A comma seperated list of directories under which to store log files
+    # Overrides log.dir
+    log.dirs=/var/lib/kafka/data/topics
+
+    # The default number of log partitions per topic. More partitions allow greater
+    # parallelism for consumption, but this will also result in more files across
+    # the brokers.
+    num.partitions=1
+
+    default.replication.factor=3
+
+    min.insync.replicas=2
+
+    auto.create.topics.enable=true
+
+    # The number of threads per data directory to be used for log recovery at startup and flushing at shutdown.
+    # This value is recommended to be increased for installations with data dirs located in RAID array.
+    #num.recovery.threads.per.data.dir=1
+
+    ############################# Server Basics #############################
+
+    # The id of the broker. This must be set to a unique integer for each broker.
+    #init#broker.id=#init#
+
+    #init#broker.rack=#init#
+
+    ############################# Socket Server Settings #############################
+
+    # The address the socket server listens on. It will get the value returned from 
+    # java.net.InetAddress.getCanonicalHostName() if not configured.
+    #   FORMAT:
+    #     listeners = listener_name://host_name:port
+    #   EXAMPLE:
+    #     listeners = PLAINTEXT://your.host.name:9092
+    #listeners=PLAINTEXT://:9092
+    listeners=OUTSIDE://:9094,PLAINTEXT://:9092
+
+    # Hostname and port the broker will advertise to producers and consumers. If not set, 
+    # it uses the value for "listeners" if configured.  Otherwise, it will use the value
+    # returned from java.net.InetAddress.getCanonicalHostName().
+    #advertised.listeners=PLAINTEXT://your.host.name:9092
+    #init#advertised.listeners=OUTSIDE://#init#,PLAINTEXT://:9092
+
+    # Maps listener names to security protocols, the default is for them to be the same. See the config documentation for more details
+    #listener.security.protocol.map=PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL
+    listener.security.protocol.map=PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL,OUTSIDE:PLAINTEXT
+    inter.broker.listener.name=PLAINTEXT
+
+    # The number of threads that the server uses for receiving requests from the network and sending responses to the network
+    #num.network.threads=3
+
+    # The number of threads that the server uses for processing requests, which may include disk I/O
+    #num.io.threads=8
+
+    # The send buffer (SO_SNDBUF) used by the socket server
+    #socket.send.buffer.bytes=102400
+
+    # The receive buffer (SO_RCVBUF) used by the socket server
+    #socket.receive.buffer.bytes=102400
+
+    # The maximum size of a request that the socket server will accept (protection against OOM)
+    #socket.request.max.bytes=104857600
+
+    ############################# Internal Topic Settings  #############################
+    # The replication factor for the group metadata internal topics "__consumer_offsets" and "__transaction_state"
+    # For anything other than development testing, a value greater than 1 is recommended for to ensure availability such as 3.
+    #offsets.topic.replication.factor=1
+    #transaction.state.log.replication.factor=1
+    #transaction.state.log.min.isr=1
+
+    ############################# Log Flush Policy #############################
+
+    # Messages are immediately written to the filesystem but by default we only fsync() to sync
+    # the OS cache lazily. The following configurations control the flush of data to disk.
+    # There are a few important trade-offs here:
+    #    1. Durability: Unflushed data may be lost if you are not using replication.
+    #    2. Latency: Very large flush intervals may lead to latency spikes when the flush does occur as there will be a lot of data to flush.
+    #    3. Throughput: The flush is generally the most expensive operation, and a small flush interval may lead to excessive seeks.
+    # The settings below allow one to configure the flush policy to flush data after a period of time or
+    # every N messages (or both). This can be done globally and overridden on a per-topic basis.
+
+    # The number of messages to accept before forcing a flush of data to disk
+    #log.flush.interval.messages=10000
+
+    # The maximum amount of time a message can sit in a log before we force a flush
+    #log.flush.interval.ms=1000
+
+    ############################# Log Retention Policy #############################
+
+    # The following configurations control the disposal of log segments. The policy can
+    # be set to delete segments after a period of time, or after a given size has accumulated.
+    # A segment will be deleted whenever *either* of these criteria are met. Deletion always happens
+    # from the end of the log.
+
+    # https://cwiki.apache.org/confluence/display/KAFKA/KIP-186%3A+Increase+offsets+retention+default+to+7+days
+    offsets.retention.minutes=10080
+
+    # The minimum age of a log file to be eligible for deletion due to age
+    log.retention.hours=-1
+
+    # A size-based retention policy for logs. Segments are pruned from the log unless the remaining
+    # segments drop below log.retention.bytes. Functions independently of log.retention.hours.
+    #log.retention.bytes=1073741824
+
+    # The maximum size of a log segment file. When this size is reached a new log segment will be created.
+    #log.segment.bytes=1073741824
+
+    # The interval at which log segments are checked to see if they can be deleted according
+    # to the retention policies
+    #log.retention.check.interval.ms=300000
+
+    ############################# Zookeeper #############################
+
+    # Zookeeper connection string (see zookeeper docs for details).
+    # This is a comma separated host:port pairs, each corresponding to a zk
+    # server. e.g. "127.0.0.1:3000,127.0.0.1:3001,127.0.0.1:3002".
+    # You can also append an optional chroot string to the urls to specify the
+    # root directory for all kafka znodes.
+    zookeeper.connect=zookeeper:2181
+
+    # Timeout in ms for connecting to zookeeper
+    #zookeeper.connection.timeout.ms=6000
+
+
+    ############################# Group Coordinator Settings #############################
+
+    # The following configuration specifies the time, in milliseconds, that the GroupCoordinator will delay the initial consumer rebalance.
+    # The rebalance will be further delayed by the value of group.initial.rebalance.delay.ms as new members join the group, up to a maximum of max.poll.interval.ms.
+    # The default value for this is 3 seconds.
+    # We override this to 0 here as it makes for a better out-of-the-box experience for development and testing.
+    # However, in production environments the default value of 3 seconds is more suitable as this will help to avoid unnecessary, and potentially expensive, rebalances during application startup.
+    #group.initial.rebalance.delay.ms=0
+
+  log4j.properties: |-
+    # Unspecified loggers and loggers with additivity=true output to server.log and stdout
+    # Note that INFO only applies to unspecified loggers, the log level of the child logger is used otherwise
+    log4j.rootLogger=INFO, stdout
+
+    log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+    log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+    log4j.appender.stdout.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    log4j.appender.kafkaAppender=org.apache.log4j.DailyRollingFileAppender
+    log4j.appender.kafkaAppender.DatePattern='.'yyyy-MM-dd-HH
+    log4j.appender.kafkaAppender.File=${kafka.logs.dir}/server.log
+    log4j.appender.kafkaAppender.layout=org.apache.log4j.PatternLayout
+    log4j.appender.kafkaAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    log4j.appender.stateChangeAppender=org.apache.log4j.DailyRollingFileAppender
+    log4j.appender.stateChangeAppender.DatePattern='.'yyyy-MM-dd-HH
+    log4j.appender.stateChangeAppender.File=${kafka.logs.dir}/state-change.log
+    log4j.appender.stateChangeAppender.layout=org.apache.log4j.PatternLayout
+    log4j.appender.stateChangeAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    log4j.appender.requestAppender=org.apache.log4j.DailyRollingFileAppender
+    log4j.appender.requestAppender.DatePattern='.'yyyy-MM-dd-HH
+    log4j.appender.requestAppender.File=${kafka.logs.dir}/kafka-request.log
+    log4j.appender.requestAppender.layout=org.apache.log4j.PatternLayout
+    log4j.appender.requestAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    log4j.appender.cleanerAppender=org.apache.log4j.DailyRollingFileAppender
+    log4j.appender.cleanerAppender.DatePattern='.'yyyy-MM-dd-HH
+    log4j.appender.cleanerAppender.File=${kafka.logs.dir}/log-cleaner.log
+    log4j.appender.cleanerAppender.layout=org.apache.log4j.PatternLayout
+    log4j.appender.cleanerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    log4j.appender.controllerAppender=org.apache.log4j.DailyRollingFileAppender
+    log4j.appender.controllerAppender.DatePattern='.'yyyy-MM-dd-HH
+    log4j.appender.controllerAppender.File=${kafka.logs.dir}/controller.log
+    log4j.appender.controllerAppender.layout=org.apache.log4j.PatternLayout
+    log4j.appender.controllerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    log4j.appender.authorizerAppender=org.apache.log4j.DailyRollingFileAppender
+    log4j.appender.authorizerAppender.DatePattern='.'yyyy-MM-dd-HH
+    log4j.appender.authorizerAppender.File=${kafka.logs.dir}/kafka-authorizer.log
+    log4j.appender.authorizerAppender.layout=org.apache.log4j.PatternLayout
+    log4j.appender.authorizerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    # Change the two lines below to adjust ZK client logging
+    log4j.logger.org.I0Itec.zkclient.ZkClient=INFO
+    log4j.logger.org.apache.zookeeper=INFO
+
+    # Change the two lines below to adjust the general broker logging level (output to server.log and stdout)
+    log4j.logger.kafka=INFO
+    log4j.logger.org.apache.kafka=INFO
+
+    # Change to DEBUG or TRACE to enable request logging
+    log4j.logger.kafka.request.logger=WARN, requestAppender
+    log4j.additivity.kafka.request.logger=false
+
+    # Uncomment the lines below and change log4j.logger.kafka.network.RequestChannel$ to TRACE for additional output
+    # related to the handling of requests
+    #log4j.logger.kafka.network.Processor=TRACE, requestAppender
+    #log4j.logger.kafka.server.KafkaApis=TRACE, requestAppender
+    #log4j.additivity.kafka.server.KafkaApis=false
+    log4j.logger.kafka.network.RequestChannel$=WARN, requestAppender
+    log4j.additivity.kafka.network.RequestChannel$=false
+
+    log4j.logger.kafka.controller=TRACE, controllerAppender
+    log4j.additivity.kafka.controller=false
+
+    log4j.logger.kafka.log.LogCleaner=INFO, cleanerAppender
+    log4j.additivity.kafka.log.LogCleaner=false
+
+    log4j.logger.state.change.logger=TRACE, stateChangeAppender
+    log4j.additivity.state.change.logger=false
+
+    # Change to DEBUG to enable audit log for the authorizer
+    log4j.logger.kafka.authorizer.logger=WARN, authorizerAppender
+    log4j.additivity.kafka.authorizer.logger=false

kafka/20dns.yml

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+# A headless service to create DNS records
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: broker
+  namespace: kafka
+spec:
+  ports:
+  - port: 9092
+  # [podname].broker.kafka.svc.cluster.local
+  clusterIP: None
+  selector:
+    app: kafka

kafka/30bootstrap-service.yml

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+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: bootstrap
+  namespace: kafka
+spec:
+  ports:
+  - port: 9092
+  selector:
+    app: kafka

kafka/50kafka.yml

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+apiVersion: apps/v1beta1
+kind: StatefulSet
+metadata:
+  name: kafka
+  namespace: kafka
+spec:
+  selector:
+    matchLabels:
+      app: kafka
+  serviceName: "broker"
+  replicas: 3
+  updateStrategy:
+    type: OnDelete
+  template:
+    metadata:
+      labels:
+        app: kafka
+      annotations:
+    spec:
+      terminationGracePeriodSeconds: 30
+      initContainers:
+      - name: init-config
+        image: solsson/kafka-initutils@sha256:18bf01c2c756b550103a99b3c14f741acccea106072cd37155c6d24be4edd6e2
+        env:
+        - name: NODE_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: spec.nodeName
+        - name: POD_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.name
+        - name: POD_NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+        command: ['/bin/bash', '/etc/kafka-configmap/init.sh']
+        volumeMounts:
+        - name: configmap
+          mountPath: /etc/kafka-configmap
+        - name: config
+          mountPath: /etc/kafka
+      containers:
+      - name: broker
+        image: solsson/kafka:1.0.1@sha256:1a4689d49d6274ac59b9b740f51b0408e1c90a9b66d16ad114ee9f7193bab111
+        env:
+        - name: KAFKA_LOG4J_OPTS
+          value: -Dlog4j.configuration=file:/etc/kafka/log4j.properties
+        - name: JMX_PORT
+          value: "5555"
+        ports:
+        - name: inside
+          containerPort: 9092
+        - name: outside
+          containerPort: 9094
+        - name: jmx
+          containerPort: 5555
+        command:
+        - ./bin/kafka-server-start.sh
+        - /etc/kafka/server.properties
+        resources:
+          requests:
+            cpu: 100m
+            memory: 512Mi
+        readinessProbe:
+          tcpSocket:
+            port: 9092
+          timeoutSeconds: 1
+        volumeMounts:
+        - name: config
+          mountPath: /etc/kafka
+        - name: data
+          mountPath: /var/lib/kafka/data
+      volumes:
+      - name: configmap
+        configMap:
+          name: broker-config
+      - name: config
+        emptyDir: {}
+  volumeClaimTemplates:
+  - metadata:
+      name: data
+    spec:
+      accessModes: [ "ReadWriteOnce" ]
+      storageClassName: kafka-broker
+      resources:
+        requests:
+          storage: 40Gi

loadbalancer/kafka-manager.yml

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+kind: Service
+apiVersion: v1
+metadata:
+  name: kafka-manager-lb
+  namespace: kafka
+spec:
+  selector:
+    app: kafka-manager
+  ports:
+  - port: 80
+    targetPort: 80
+  type: LoadBalancer

tester/kafka-test.yml

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+kind: Pod
+apiVersion: v1
+metadata:
+  name: kafka-test-outside
+spec:
+  containers:
+  - name: kafka-test
+    image: banzaicloud/kafka:2.12-1.2.0-etcd-0.0.1
+    # Just spin & wait forever
+    command: [ "/bin/bash", "-c", "--" ]
+    args: [ "while true; do sleep 3000; done;" ]

zookeeper/10zookeeper-config.yml

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+kind: ConfigMap
+metadata:
+  name: zookeeper-config
+  namespace: kafka
+apiVersion: v1
+data:
+  init.sh: |-
+    #!/bin/bash
+    set -x
+
+    [ -z "$ID_OFFSET" ] && ID_OFFSET=1
+    export ZOOKEEPER_SERVER_ID=$((${HOSTNAME##*-} + $ID_OFFSET))
+    echo "${ZOOKEEPER_SERVER_ID:-1}" | tee /var/lib/zookeeper/data/myid
+    cp -Lur /etc/kafka-configmap/* /etc/kafka/
+    sed -i "s/server\.$ZOOKEEPER_SERVER_ID\=[a-z0-9.-]*/server.$ZOOKEEPER_SERVER_ID=0.0.0.0/" /etc/kafka/zookeeper.properties
+
+  zookeeper.properties: |-
+    tickTime=2000
+    dataDir=/var/lib/zookeeper/data
+    dataLogDir=/var/lib/zookeeper/log
+    clientPort=2181
+    initLimit=5
+    syncLimit=2
+    server.1=pzoo-0.pzoo:2888:3888:participant
+    server.2=pzoo-1.pzoo:2888:3888:participant
+    server.3=pzoo-2.pzoo:2888:3888:participant
+    server.4=zoo-0.zoo:2888:3888:participant
+    server.5=zoo-1.zoo:2888:3888:participant
+
+  log4j.properties: |-
+    log4j.rootLogger=INFO, stdout
+    log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+    log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+    log4j.appender.stdout.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    # Suppress connection log messages, three lines per livenessProbe execution
+    log4j.logger.org.apache.zookeeper.server.NIOServerCnxnFactory=WARN
+    log4j.logger.org.apache.zookeeper.server.NIOServerCnxn=WARN

zookeeper/20pzoo-service.yml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: pzoo
+  namespace: kafka
+spec:
+  ports:
+  - port: 2888
+    name: peer
+  - port: 3888
+    name: leader-election
+  clusterIP: None
+  selector:
+    app: zookeeper
+    storage: persistent

zookeeper/21zoo-service.yml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: zoo
+  namespace: kafka
+spec:
+  ports:
+  - port: 2888
+    name: peer
+  - port: 3888
+    name: leader-election
+  clusterIP: None
+  selector:
+    app: zookeeper
+    storage: ephemeral

zookeeper/30service.yml

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+# the headless service is for PetSet DNS, this one is for clients
+apiVersion: v1
+kind: Service
+metadata:
+  name: zookeeper
+  namespace: kafka
+spec:
+  ports:
+  - port: 2181
+    name: client
+  selector:
+    app: zookeeper

zookeeper/50pzoo.yml

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+apiVersion: apps/v1beta1
+kind: StatefulSet
+metadata:
+  name: pzoo
+  namespace: kafka
+spec:
+  selector:
+    matchLabels:
+      app: zookeeper
+      storage: persistent
+  serviceName: "pzoo"
+  replicas: 3
+  updateStrategy:
+    type: OnDelete
+  template:
+    metadata:
+      labels:
+        app: zookeeper
+        storage: persistent
+      annotations:
+    spec:
+      terminationGracePeriodSeconds: 10
+      initContainers:
+      - name: init-config
+        image: solsson/kafka-initutils@sha256:18bf01c2c756b550103a99b3c14f741acccea106072cd37155c6d24be4edd6e2
+        command: ['/bin/bash', '/etc/kafka-configmap/init.sh']
+        volumeMounts:
+        - name: configmap
+          mountPath: /etc/kafka-configmap
+        - name: config
+          mountPath: /etc/kafka
+        - name: data
+          mountPath: /var/lib/zookeeper/data
+      containers:
+      - name: zookeeper
+        image: solsson/kafka:1.0.1@sha256:1a4689d49d6274ac59b9b740f51b0408e1c90a9b66d16ad114ee9f7193bab111
+        env:
+        - name: KAFKA_LOG4J_OPTS
+          value: -Dlog4j.configuration=file:/etc/kafka/log4j.properties
+        command:
+        - ./bin/zookeeper-server-start.sh
+        - /etc/kafka/zookeeper.properties
+        ports:
+        - containerPort: 2181
+          name: client
+        - containerPort: 2888
+          name: peer
+        - containerPort: 3888
+          name: leader-election
+        resources:
+          requests:
+            cpu: 10m
+            memory: 100Mi
+        readinessProbe:
+          exec:
+            command:
+            - /bin/sh
+            - -c
+            - '[ "imok" = "$(echo ruok | nc -w 1 -q 1 127.0.0.1 2181)" ]'
+        volumeMounts:
+        - name: config
+          mountPath: /etc/kafka
+        - name: data
+          mountPath: /var/lib/zookeeper/data
+      volumes:
+      - name: configmap
+        configMap:
+          name: zookeeper-config
+      - name: config
+        emptyDir: {}
+  volumeClaimTemplates:
+  - metadata:
+      name: data
+    spec:
+      accessModes: [ "ReadWriteOnce" ]
+      storageClassName: kafka-zookeeper
+      resources:
+        requests:
+          storage: 1Gi

zookeeper/51zoo.yml

@@ -0,0 +1,75 @@
+apiVersion: apps/v1beta1
+kind: StatefulSet
+metadata:
+  name: zoo
+  namespace: kafka
+spec:
+  selector:
+    matchLabels:
+      app: zookeeper
+      storage: ephemeral
+  serviceName: "zoo"
+  replicas: 2
+  updateStrategy:
+    type: OnDelete
+  template:
+    metadata:
+      labels:
+        app: zookeeper
+        storage: ephemeral
+      annotations:
+    spec:
+      terminationGracePeriodSeconds: 10
+      initContainers:
+      - name: init-config
+        image: solsson/kafka-initutils@sha256:18bf01c2c756b550103a99b3c14f741acccea106072cd37155c6d24be4edd6e2
+        command: ['/bin/bash', '/etc/kafka-configmap/init.sh']
+        env:
+        - name: ID_OFFSET
+          value: "4"
+        volumeMounts:
+        - name: configmap
+          mountPath: /etc/kafka-configmap
+        - name: config
+          mountPath: /etc/kafka
+        - name: data
+          mountPath: /var/lib/zookeeper/data
+      containers:
+      - name: zookeeper
+        image: solsson/kafka:1.0.1@sha256:1a4689d49d6274ac59b9b740f51b0408e1c90a9b66d16ad114ee9f7193bab111
+        env:
+        - name: KAFKA_LOG4J_OPTS
+          value: -Dlog4j.configuration=file:/etc/kafka/log4j.properties
+        command:
+        - ./bin/zookeeper-server-start.sh
+        - /etc/kafka/zookeeper.properties
+        ports:
+        - containerPort: 2181
+          name: client
+        - containerPort: 2888
+          name: peer
+        - containerPort: 3888
+          name: leader-election
+        resources:
+          requests:
+            cpu: 10m
+            memory: 100Mi
+        readinessProbe:
+          exec:
+            command:
+            - /bin/sh
+            - -c
+            - '[ "imok" = "$(echo ruok | nc -w 1 -q 1 127.0.0.1 2181)" ]'
+        volumeMounts:
+        - name: config
+          mountPath: /etc/kafka
+        - name: data
+          mountPath: /var/lib/zookeeper/data
+      volumes:
+      - name: configmap
+        configMap:
+          name: zookeeper-config
+      - name: config
+        emptyDir: {}
+      - name: data
+        emptyDir: {}