k8s中如何给zookeeper集群增加密码验证

在Kubernetes中给Zookeeper集群增加密码验证，可以通过以下步骤实现：

1. 创建一个包含Zookeeper密码的Secret对象。可以使用如下命令创建一个Secret对象：

   kubectl create secret generic zk-auth --from-literal=username=<username> --from-literal=password=<password>

其中`<username>`和`<password>`是Zookeeper集群的用户名和密码。

2. 在Zookeeper的配置文件中添加用户名和密码的配置项。可以在Zookeeper的ConfigMap对象中添加以下配置项：

   zookeeper.authProvider.1=org.apache.zookeeper.server.auth.SASLAuthenticationProvider
   zookeeper.authProvider.2=org.apache.zookeeper.server.auth.DigestAuthenticationProvider
   requireClientAuthScheme=sasl
   jaasLoginRenew=3600000
   authProvider.1=org.apache.zookeeper.server.auth.SASLAuthenticationProvider
   authProvider.2=org.apache.zookeeper.server.auth.DigestAuthenticationProvider
   serverCnxnFactory=org.apache.zookeeper.server.NettyServerCnxnFactory
   ssl.clientAuth=need

3. 在Zookeeper的Deployment对象中，添加环境变量来指定Zookeeper的用户名和密码。可以在`spec.template.spec.containers`下添加如下环境变量：

   - name: ZOO_SERVERS
     value: "server.1=zookeeper-0:2888:3888;2181,server.2=zookeeper-1:2888:3888;2181,server.3=zookeeper-2:2888:3888;2181"
   
   - name: ZOO_MY_ID
     value: "1"
   
   - name: ZOO_TICK_TIME
     value: "2000"
   
   - name: ZOO_INIT_LIMIT
     value: "5"
   
   - name: ZOO_SYNC_LIMIT
     value: "2"
   
   - name: ZOO_AUTHPROVIDER_1
     value: "org.apache.zookeeper.server.auth.SASLAuthenticationProvider"
   
   - name: ZOO_AUTHORIZATION_1
     value: "zookeeper"
   
   - name: ZOO_AUTHPROVIDER_2
     value: "org.apache.zookeeper.server.auth.DigestAuthenticationProvider"
   
   - name: ZOO_AUTHORIZATION_2
     value: "zookeeper"
   
   - name: ZOO_SERVER_AUTHENTICATION
     value: "required"
   
   - name: ZOO_SERVER_ALGORITHM
     value: "SHA1"
   
   - name: ZOO_SERVER_USERS
     valueFrom:
       secretKeyRef:
         name: zk-auth
         key: username
   
   - name: ZOO_SERVER_PASSWORDS
     valueFrom:
       secretKeyRef:
         name: zk-auth
         key: password

其中`zk-auth`是在第一步中创建的Secret对象的名称。

4. 重新部署Zookeeper集群。

   kubectl rollout restart deployment <zookeeper-deployment>

其中`<zookeeper-deployment>`是Zookeeper集群的Deployment对象的名称。

这样，Zookeeper集群就会使用指定的用户名和密码进行验证。