1、创建zookeeper集群

注：server.1 server.2 server.3这里的1、2、3是myid，取值范围为1-255之间，必须唯一。

apiVersion: v1
kind: Service
metadata:
  name: zookeeper
  labels:
    app: zookeeper
spec:
  clusterIP: None
  selector:
    app: zookeeper
  ports:
  - port: 2181
    name: client
  - port: 2888
    name: server
  - port: 3888
    name: election
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: zookeeper
spec:
  selector:
    matchLabels:
      app: zookeeper
  serviceName: "zookeeper"
  replicas: 3
  template:
    metadata:
      labels:
        app: zookeeper
    spec:
      containers:
      - name: zookeeper
        image: registry.cn-hangzhou.aliyuncs.com/dingliming/zookeeper:3.9.0
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 2181
          name: client
        - containerPort: 2888
          name: server
        - containerPort: 3888
          name: election
        env:
        - name: ZOO_SERVERS
          value: server.1=zookeeper-0.zookeeper.default.svc.cluster.local:2888:3888;2181 server.2=zookeeper-1.zookeeper.default.svc.cluster.local:2888:3888;2181 server.3=zookeeper-2.zookeeper.default.svc.cluster.local:2888:3888;2181
        lifecycle:
          postStart:
            exec:
              command: [ "sh","-c","expr ${HOSTNAME##*-} + 1 > /data/myid" ]          
        volumeMounts:
        - name: data
          mountPath: /data
  volumeClaimTemplates:
  - metadata:
      name: data
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: "nfs-client"
      resources:
        requests:
          storage: 3Gi

2、查看zookeeper日志，验证集群是否正常。

注：看到如下日志，表示集群正常。

[root@k8s-master1 ~]# kubectl logs -f zookeeper-0
2023-10-19 10:13:34,173 [myid:] - INFO  [WorkerReceiver[myid=1]:o.a.z.s.q.FastLeaderElection$Messenger$WorkerReceiver@391] - Notification: my state:FOLLOWING; n.sid:3, n.state:LOOKING, n.leader:3, n.round:0x3, n.peerEpoch:0x1, n.zxid:0x0, message format version:0x2, n.config version:0x0
2023-10-19 10:13:34,390 [myid:] - INFO  [WorkerReceiver[myid=1]:o.a.z.s.q.FastLeaderElection$Messenger$WorkerReceiver@391] - Notification: my state:FOLLOWING; n.sid:3, n.state:LOOKING, n.leader:3, n.round:0x3, n.peerEpoch:0x1, n.zxid:0x0, message format version:0x2, n.config version:0x0
2023-10-19 10:13:34,802 [myid:] - INFO  [WorkerReceiver[myid=1]:o.a.z.s.q.FastLeaderElection$Messenger$WorkerReceiver@391] - Notification: my state:FOLLOWING; n.sid:3, n.state:LOOKING, n.leader:3, n.round:0x3, n.peerEpoch:0x1, n.zxid:0x0, message format version:0x2, n.config version:0x0
2023-10-19 10:13:35,620 [myid:] - INFO  [WorkerReceiver[myid=1]:o.a.z.s.q.FastLeaderElection$Messenger$WorkerReceiver@391] - Notification: my state:FOLLOWING; n.sid:3, n.state:LOOKING, n.leader:3, n.round:0x3, n.peerEpoch:0x1, n.zxid:0x0, message format version:0x2, n.config version:0x0
2023-10-19 10:13:37,232 [myid:] - INFO  [WorkerReceiver[myid=1]:o.a.z.s.q.FastLeaderElection$Messenger$WorkerReceiver@391] - Notification: my state:FOLLOWING; n.sid:3, n.state:LOOKING, n.leader:3, n.round:0x3, n.peerEpoch:0x1, n.zxid:0x0, message format version:0x2, n.config version:0x0
2023-10-19 10:13:40,446 [myid:] - INFO  [WorkerReceiver[myid=1]:o.a.z.s.q.FastLeaderElection$Messenger$WorkerReceiver@391] - Notification: my state:FOLLOWING; n.sid:3, n.state:LOOKING, n.leader:3, n.round:0x3, n.peerEpoch:0x1, n.zxid:0x0, message format version:0x2, n.config version:0x0
2023-10-19 10:13:46,879 [myid:] - INFO  [WorkerReceiver[myid=1]:o.a.z.s.q.FastLeaderElection$Messenger$WorkerReceiver@391] - Notification: my state:FOLLOWING; n.sid:3, n.state:LOOKING, n.leader:3, n.round:0x3, n.peerEpoch:0x1, n.zxid:0x0, message format version:0x2, n.config version:0x0
2023-10-19 10:13:59,697 [myid:] - INFO  [WorkerReceiver[myid=1]:o.a.z.s.q.FastLeaderElection$Messenger$WorkerReceiver@391] - Notification: my state:FOLLOWING; n.sid:3, n.state:LOOKING, n.leader:3, n.round:0x3, n.peerEpoch:0x1, n.zxid:0x0, message format version:0x2, n.config version:0x0
2023-10-19 10:13:59,719 [myid:] - INFO  [WorkerReceiver[myid=1]:o.a.z.s.q.FastLeaderElection$Messenger$WorkerReceiver@391] - Notification: my state:FOLLOWING; n.sid:3, n.state:LOOKING, n.leader:2, n.round:0x3, n.peerEpoch:0x1, n.zxid:0x100000000, message format version:0x2, n.config version:0x0

3、检查集群节点的状态

[root@k8s-master1 ~]# for i in 0 1 2;do kubectl exec zookeeper-$i -- zkServer.sh status;done
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: follower
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: follower
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: leader