1. 拉取镜像

docker pull leolee32/kubernetes-library:kubernetes-zookeeper1.0-3.4.10
docker pull k8s.gcr.io/kubernetes-zookeeper:1.0-3.4.10

2. 创建命名空间

# 创建命名空间
kubectl create ns bigdata
# 查看命名空
kubectl get ns
kubectl get namespace

3. 创建pv

cd /home/bigdata/k8s
vi zkpv.yaml

编排pv：

kind: PersistentVolume
apiVersion: v1
metadata:
  name: pv-zk1
  namespace: bigdata
  annotations:
    volume.beta.kubernetes.io/storage-class: "anything"
  labels:
    type: local
spec:
  capacity:
    storage: 3Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/data/zookeeper1"
  persistentVolumeReclaimPolicy: Recycle
---
kind: PersistentVolume
apiVersion: v1
metadata:
  name: pv-zk2
  namespace: bigdata
  annotations:
    volume.beta.kubernetes.io/storage-class: "anything"
  labels:
    type: local
spec:
  capacity:
    storage: 3Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/data/zookeeper2"
  persistentVolumeReclaimPolicy: Recycle
---
kind: PersistentVolume
apiVersion: v1
metadata:
  name: pv-zk3
  namespace: bigdata
  annotations:
    volume.beta.kubernetes.io/storage-class: "anything"
  labels:
    type: local
spec:
  capacity:
    storage: 3Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/data/zookeeper3"
  persistentVolumeReclaimPolicy: Recycle

创建pv：

kubectl create -f zkpv.yaml

查看pv：

kubectl get pv

4. 编排ZooKeeper**

cd /home/bigdata/k8s
vi zksts.yaml

服务发现实例编排：

apiVersion: v1
kind: Service
metadata:
  name: zk-hs
  namespace: bigdata
  labels:
    app: zk
spec:
  ports:
  - port: 2888
    name: server
  - port: 3888
    name: leader-election
  clusterIP: None
  selector:
    app: zk
---
apiVersion: v1
kind: Service
metadata:
  name: zk-cs
  namespace: bigdata
  labels:
    app: zk
spec:
  type: NodePort
  ports:
  - port: 2181
    nodePort: 32181
    name: client
  selector:
    app: zk
---
apiVersion: policy/v1beta1
kind: PodDisruptionBudget
metadata:
  name: zk-pdb
  namespace: bigdata
spec:
  selector:
    matchLabels:
      app: zk
  maxUnavailable: 1
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: zk
  namespace: bigdata
spec:
  selector:
    matchLabels:
      app: zk
  serviceName: zk-hs
  replicas: 3
  updateStrategy:
    type: RollingUpdate
  podManagementPolicy: Parallel
  updateStrategy:
    type: RollingUpdate
  template:
    metadata:
      labels:
        app: zk
    spec:
      containers:
      - name: kubernetes-zookeeper
        imagePullPolicy: IfNotPresent
        image: "leolee32/kubernetes-library:kubernetes-zookeeper1.0-3.4.10"
        resources:
          requests:
            memory: "128Mi"
            cpu: "0.1"
        ports:
        - containerPort: 2181
          name: client
        - containerPort: 2888
          name: server
        - containerPort: 3888
          name: leader-election
        command:
        - sh
        - -c
        - "start-zookeeper \
          --servers=3 \
          --data_dir=/var/lib/zookeeper/data \
          --data_log_dir=/var/lib/zookeeper/data/log \
          --conf_dir=/opt/zookeeper/conf \
          --client_port=2181 \
          --election_port=3888 \
          --server_port=2888 \
          --tick_time=2000 \
          --init_limit=10 \
          --sync_limit=5 \
          --heap=512M \
          --max_client_cnxns=60 \
          --snap_retain_count=3 \
          --purge_interval=12 \
          --max_session_timeout=40000 \
          --min_session_timeout=4000 \
          --log_level=INFO"
        readinessProbe:
          exec:
            command:
            - sh
            - -c
            - "zookeeper-ready 2181"
          initialDelaySeconds: 10
          timeoutSeconds: 5
        livenessProbe:
          exec:
            command:
            - sh
            - -c
            - "zookeeper-ready 2181"
          initialDelaySeconds: 10
          timeoutSeconds: 5
        volumeMounts:
        - name: datadir
          mountPath: /var/lib/zookeeper
  volumeClaimTemplates:
  - metadata:
      name: datadir
      annotations:
        volume.beta.kubernetes.io/storage-class: "anything"
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 3Gi

注意：暴露端口，需要遵守“The range of valid ports is 30000-32767”。
创建sts：

kubectl create -f zksts.yaml

5. 验证

查看pods：

kubectl get pods -n bigdata

如果三个pod都处于“running”状态则说明启动成功了。
查看主机名：

for i in 0 1 2; do kubectl exec zk-$i -n bigdata -- hostname; done

查看myid：

for i in 0 1 2; do echo "myid zk-$i";kubectl exec zk-$i -n bigdata -- cat /var/lib/zookeeper/data/myid; done

查看完整域名：

for i in 0 1 2; do kubectl exec zk-$i -n bigdata -- hostname -f; done

查看ZooKeeper状态：

for i in 0 1 2; do kubectl exec zk-$i -n bigdata -- zkServer.sh status; done

客户端查看（ZooInspector）：
使用K8s的任意节点加上暴露端口号（LTSR003:32181/LTSR005:32181/LTSR006:32181）均可连接ZooKeeper。