|NO.Z.00286|——————————|CloudNative|——|KuberNetes&运维.V08|——|EFLK架构.v03|部署zookeeper|

一、部署zookeeper：

### --- 组件helm+zookeeper+kafka

~~~     # 部署EFLK架构：
~~~     ElasticSearch+Filebeat+Logstash+Kibana+zookeeper+kafka

二、下载zookeeper版本包

### --- 添加bitnami的helm仓库

[root@k8s-master01 zookeeper-kafka]# helm repo add bitnami https://charts.bitnami.com/bitnami

### --- 查看添加的仓库

[root@k8s-master01 zookeeper-kafka]# helm repo list
NAME            URL                                                              
bitnami         https://charts.bitnami.com/bitnami 

### --- 查看bitnami仓库下zookeeper的程序包

[root@k8s-master01 zookeeper-kafka]# helm search repo zookeeper
NAME                        CHART VERSION   APP VERSION DESCRIPTION                                       
bitnami/zookeeper           6.7.2           3.7.0       A centralized service for maintaining configura...

### --- 下载bitnami仓库下zookeeper版本包

[root@k8s-master01 zookeeper-kafka]# helm pull bitnami/zookeeper
[root@k8s-master01 zookeeper-kafka]# tar -zxf zookeeper-6.7.2.tgz 

三、配置zookeeper.values.yaml配置文件

### --- 配置zookeeper的values配置文件

[root@k8s-master01 zookeeper]# vim values.yaml
~~~     # 注释一：
podDisruptionBudget:
  maxUnavailable: 1         # 参数修改为1

四、创建zookeeper

### --- 创建zookeeper

[root@k8s-master01 zookeeper]# helm install zookeeper -n public-service .
NAME: zookeeper
LAST DEPLOYED: Sun May 23 23:52:40 2021
NAMESPACE: public-service
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
** Please be patient while the chart is being deployed **

ZooKeeper can be accessed via port 2181 on the following DNS name from within your cluster:

    zookeeper.public-service.svc.cluster.local

To connect to your ZooKeeper server run the following commands:

    export POD_NAME=$(kubectl get pods --namespace public-service -l "app.kubernetes.io/name=zookeeper,app.kubernetes.io/instance=zookeeper,app.kubernetes.io/component=zookeeper" -o jsonpath="{.items[0].metadata.name}")
    kubectl exec -it $POD_NAME -- zkCli.sh

To connect to your ZooKeeper server from outside the cluster execute the following commands:

    kubectl port-forward --namespace public-service svc/zookeeper 2181:2181 &
    zkCli.sh 127.0.0.1:2181

五、查看创建的zookeeper是否正常启动

### --- 查看创建zookeeper是否启动
~~~     等待zookeeper启动之后安装kafka

[root@k8s-master01 zookeeper]# kubectl get po -n public-service -owide
NAME                              READY   STATUS    RESTARTS   AGE     IP               NODE           NOMINATED NODE   READINESS GATES
zookeeper-0                       1/1     Running   0          2m54s   172.25.244.201   k8s-master01   <none>           <none>

六、查看创建的zookeeper的service资源

### --- 查看创建的service

[root@k8s-master01 kafka]# kubectl get svc -n public-service -owide
NAME                    TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE     SELECTOR
zookeeper               ClusterIP   10.103.138.82    <none>        2181/TCP,2888/TCP,3888/TCP   12m     app.kubernetes.io/component=zookeeper,app.kubernetes.io/instance=zookeeper,app.kubernetes.io/name=zookeeper
zookeeper-headless      ClusterIP   None             <none>        2181/TCP,2888/TCP,3888/TCP   12m     app.kubernetes.io/component=zookeeper,app.kubernetes.io/instance=zookeeper,app.kubernetes.io/name=zookeeper

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Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart

                                                                                                                                                   ——W.S.Landor

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