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使用OpenApi部署一个ZK应用

更新时间:2022/01/18 访问次数:994

1. 创建有状态应用


使用API:CreateApp


注意应用StateType=2,代表有状态应用。默认为无状态应用,即使用Deployment部署。


2. 创建部署配置


使用API:CreateDeployConfig


可以使用configmap存放zk的基本配置以及初始化配置脚本。注意所有的yaml配置需要Base64序列化后加入到参数中。


参考配置:


1、 configmap

kind: ConfigMap
metadata:
  name: zookeeper-config
#  namespace: kafka
apiVersion: v1
data:
  init.sh: |-
    #!/bin/bash
    set -e
    set -x
    [ -z "$ID_OFFSET" ] && ID_OFFSET=1
    export ZOO_MY_ID=$((${HOSTNAME##*-} + $ID_OFFSET))
    echo "${ZOO_MY_ID:-1}" | tee $ZOO_DATA_DIR/myid
    cat ${EXTERNAL_CONF_PATH}/zookeeper.properties > ${ZOO_CONF_DIR}/zoo.cfg
    sed -i "s/server\.${ZOO_MY_ID}\=[a-z0-9.-]*/server.${ZOO_MY_ID}=0.0.0.0/" ${ZOO_CONF_DIR}/zoo.cfg
  zookeeper.properties: |-
    tickTime=2000
    dataDir=/data
    dataLogDir=/datalog
    clientPort=2181
    maxClientCnxns=1
    initLimit=5
    syncLimit=2
    autopurge.snapRetainCount=3
    autopurge.purgeInterval=1
    server.1=zk-0.zk-hs:2888:3888
    server.2=zk-1.zk-hs:2888:3888
    server.3=zk-2.zk-hs:2888:3888


2、statefulset

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: zk
spec:
  selector:
    matchLabels:
      app: zk
  serviceName: zk-hs
  updateStrategy:
    type: RollingUpdate
  podManagementPolicy: Parallel
  template:
    metadata:
      labels:
        app: zk
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            - labelSelector:
                matchExpressions:
                  - key: "app"
                    operator: In
                    values:
                    - zk
              topologyKey: "kubernetes.io/hostname"
      containers:
      - name: zookeeper
        imagePullPolicy: IfNotPresent
        image: "registry-vpc.cn-zhangjiakou.aliyuncs.com/zaide_demo/zookeeper:1.0.0"
        ports:
        - containerPort: 2181
          name: client
        - containerPort: 2888
          name: server
        - containerPort: 3888
          name: leader-election
        env:
        - name: EXTERNAL_CONF_PATH
          value: /external/bin
        readinessProbe:
          exec:
            command:
            - /bin/sh
            - -c
            - '[ "imok" = "$(echo ruok | nc -w 1 -q 1 127.0.0.1 2181)" ]'
        volumeMounts:
        - name: datadir
          mountPath: /var/lib/zookeeper
        - name: configmap
          mountPath: /external/bin/
      volumes:
      - name: configmap
        configMap:
          name: zookeeper-config
      - name: datadir
        emptyDir: {}



3. 创建环境


使用API:CreateEnvironment


注意:环境的实例个数注意和上面ConfigMap的配置保持一致。


4. 创建HeadlessService


使用API:CreateService


参考请求:

Action=CreateService&
EnvId=xxxx&
Headless=true&
K8sServiceId=zk-hs&
Name=zk-hs&
PortMappings.1.Name=server&
PortMappings.1.Port=2888&
PortMappings.1.Protocol=TCP&
PortMappings.1.TargetPort=2888&
PortMappings.2.Name=leader-election&
PortMappings.2.Port=3888&
PortMappings.2.Protocol=TCP&
PortMappings.2.TargetPort=3888&
ServiceType=ClusterIP


5. 部署应用


使用API:DeployApp


也可以使用控制台进行部署(注意,暂时不支持yaml类型配置在控制台更新)


6. 验证结果


使用API:DescribeDeployOrderDetail, DescribePodLog, DescribePodEvents


可以在控制台找到刚才通过API提交的发布单,查看发布单结果,或者调用发布相关API确认结果。

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