阿里云k8s部署zookeeper集群

1. 阿里云k8s创建有状态应用 StatefulSet , 选择使用模板创建

可以创建自定义模板

apiVersion: apps/v1

kind: StatefulSet

metadata:

  creationTimestamp: '2019-09-09T08:45:12Z'

  generation: 1

  labels:

    app: zookeeper

    chart: zookeeper-0.4.2

    heritage: Tiller

    release: zk-test02

  name: zk-test02-zookeeper

  namespace: weifeng-qa

spec:

  podManagementPolicy: OrderedReady

  replicas: 3

  revisionHistoryLimit: 10

  selector:

    matchLabels:

      app: zookeeper

      release: zk-test02

  serviceName: zk-test02-zookeeper-headless

  template:

    metadata:

      labels:

        app: zookeeper

        release: zk-test02

    spec:

      affinity:

        podAntiAffinity:

          requiredDuringSchedulingIgnoredDuringExecution:

            - labelSelector:

                matchLabels:

                  app: zookeeper

                  release: zk-test02

              topologyKey: kubernetes.io/hostname

      containers:

        - command:

            - sh

            - '-c'

            - zkGenConfig.sh && exec zkServer.sh start-foreground

          env:

            - name: ZK_REPLICAS

              value: '3'

            - name: ZK_HEAP_SIZE

              value: 2G

            - name: ZK_TICK_TIME

              value: '2000'

            - name: ZK_INIT_LIMIT

              value: '10'

            - name: ZK_SYNC_LIMIT

              value: '5'

            - name: ZK_MAX_CLIENT_CNXNS

              value: '60'

            - name: ZK_SNAP_RETAIN_COUNT

              value: '3'

            - name: ZK_PURGE_INTERVAL

              value: '1'

            - name: ZK_LOG_LEVEL

              value: INFO

            - name: ZK_CLIENT_PORT

              value: '2181'

            - name: ZK_SERVER_PORT

              value: '2888'

            - name: ZK_ELECTION_PORT

              value: '3888'

          image: 'registry.cn-hangzhou.aliyuncs.com/xianlu/k8szk:v2'

          imagePullPolicy: Always

          livenessProbe:

            exec:

              command:

                - zkOk.sh

            failureThreshold: 3

            initialDelaySeconds: 15

            periodSeconds: 10

            successThreshold: 1

            timeoutSeconds: 5

          name: zookeeper-server

          ports:

            - containerPort: 2181

              name: client

              protocol: TCP

            - containerPort: 2888

              name: server

              protocol: TCP

            - containerPort: 3888

              name: leader-election

              protocol: TCP

          readinessProbe:

            exec:

              command:

                - zkOk.sh

            failureThreshold: 3

            initialDelaySeconds: 15

            periodSeconds: 10

            successThreshold: 1

            timeoutSeconds: 5

          resources:

            limits:

              cpu: '1'

              memory: 4Gi

            requests:

              cpu: 500m

              memory: 2Gi

          terminationMessagePath: /dev/termination-log

          terminationMessagePolicy: File

          volumeMounts:

            - mountPath: /var/lib/zookeeper

              name: datadir

              subPath: data

      dnsPolicy: ClusterFirst

      restartPolicy: Always

      schedulerName: default-scheduler

      securityContext: {}

      terminationGracePeriodSeconds: 30

  updateStrategy:

    type: OnDelete

  volumeClaimTemplates:

    - metadata:

        name: datadir

      spec:

        accessModes:

          - ReadWriteOnce

        resources:

          requests:

            storage: 20Gi

        storageClassName: alicloud-disk-efficiency

      status:

        phase: Pending

使用模板创建应用后，阿里云会自动使用高效云盘创建pv,pvc 挂载到pod 目录 /var/lib/zookeeper

创建有状态应用后再创建服务 svc和 headless service

再创建可让外部访问的slb

测试创建的应用是否正常运行

[root@test-master03 ~]# kubectl get pod -n weifeng-qa|grep -i "zk-test02"

zk-test02-zookeeper-0                                    1/1     Running     0          57m

zk-test02-zookeeper-1                                    1/1     Running     0          56m

zk-test02-zookeeper-2                                    1/1     Running     0          55m

[root@test-master03 ~]# kubectl exec -it zk-test02-zookeeper-0 sh -n xitu-qa

# zkServer.sh status

ZooKeeper JMX enabled by default

Using config: /usr/bin/../etc/zookeeper/zoo.cfg

Mode: follower

kubectl exec -it zk-test02-zookeeper-1 sh -n xitu-qa

# zkServer.sh status

ZooKeeper JMX enabled by default

Using config: /usr/bin/../etc/zookeeper/zoo.cfg

Mode: follower

 kubectl exec -it zk-test02-zookeeper-2 sh -n xitu-qa

# zkServer.sh status

ZooKeeper JMX enabled by default

Using config: /usr/bin/../etc/zookeeper/zoo.cfg

Mode: leader

本地客户端连接slb:2181 测试是否正常运行

[root@centos01 ~]# zkCli.sh -server 192.168.7.225:2181

WatchedEvent state:SyncConnected type:None path:null

[zk: 192.168.7.225:2181(CONNECTED) 0] create /renwoledb 'weifeng01'

Created /renwoledb

[zk: 192.168.7.225:2181(CONNECTED) 1]  get /renwoledb

weifeng01

cZxid = 0x100000002

ctime = Sat Oct 05 16:02:02 CST 2019

mZxid = 0x100000002

mtime = Sat Oct 05 16:02:02 CST 2019

pZxid = 0x100000002

cversion = 0

dataVersion = 0

aclVersion = 0

ephemeralOwner = 0x0

dataLength = 9

numChildren = 0

巴特西

阿里云k8s部署zookeeper集群

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