try to re connect to a new server ,server is not appointed,will choose a random server

k8s集群部署的nacos服务接连收到很多nacos-client抛出的更新服务状态异常：

2022-07-23 10:46:39.997 INFO 7 --- [t.remote.worker] com.alibaba.nacos.common.remote.client : [7b83a82c-d533-4968-9f39-a1d8719f712a]Server healthy check fail,currentConnection=1658453921079_10.233.92.39_47188
2022-07-23 10:46:39.998 INFO 7 --- [t.remote.worker] com.alibaba.nacos.common.remote.client : [7b83a82c-d533-4968-9f39-a1d8719f712a] try to re connect to a new server ,server is not appointed,will choose a random server.
2022-07-23 10:46:39.999 INFO 7 --- [t.remote.worker] com.alibaba.nacos.common.remote.client : [config-0-bae787c4-fa18-4b14-b221-2eb3eed3a68f]Server healthy check fail,currentConnection=1658453909331_10.233.92.39_47058
2022-07-23 10:46:39.999 INFO 7 --- [t.remote.worker] com.alibaba.nacos.common.remote.client : [config-0-bae787c4-fa18-4b14-b221-2eb3eed3a68f] try to re connect to a new server ,server is not appointed,will choose a random server.
2022-07-23 10:46:46.119 INFO 7 --- [t.remote.worker] com.alibaba.nacos.common.remote.client : [7b83a82c-d533-4968-9f39-a1d8719f712a] fail to connect server,after trying 1 times, last try server is {serverIp='nacos-server.xxx', server main port=8848},error=unknown
2022-07-23 10:46:46.120 INFO 7 --- [t.remote.worker] com.alibaba.nacos.common.remote.client : [config-0-bae787c4-fa18-4b14-b221-2eb3eed3a68f] fail to connect server,after trying 1 times, last try server is {serverIp='nacos-server.xxx', server main port=8848},error=unknown
2022-07-23 10:46:48.713 ERROR 7 --- [aming.updater.0] com.alibaba.nacos.common.remote.client : Send request fail, request=ServiceQueryRequest{headers={app=unknown}, requestId='null'}, retryTimes=0,errorMessage=Client not connected,current status:UNHEALTHY
2022-07-23 10:46:48.813 ERROR 7 --- [aming.updater.0] com.alibaba.nacos.common.remote.client : Send request fail, request=ServiceQueryRequest{headers={app=unknown}, requestId='null'}, retryTimes=1,errorMessage=Client not connected,current status:UNHEALTHY
2022-07-23 10:46:48.914 ERROR 7 --- [aming.updater.0] com.alibaba.nacos.common.remote.client : Send request fail, request=ServiceQueryRequest{headers={app=unknown}, requestId='null'}, retryTimes=2,errorMessage=Client not connected,current status:UNHEALTHY
2022-07-23 10:46:48.914 WARN 7 --- [aming.updater.0] com.alibaba.nacos.client.naming : [NA] failed to update serviceName: DEFAULT_GROUP@@iot-devicemgr

com.alibaba.nacos.api.exception.NacosException: Request nacos server failed:
   at com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy.requestToServer(NamingGrpcClientProxy.java:213)
   at com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy.queryInstancesOfService(NamingGrpcClientProxy.java:128)
   at com.alibaba.nacos.client.naming.remote.NamingClientProxyDelegate.queryInstancesOfService(NamingClientProxyDelegate.java:111)
   at com.alibaba.nacos.client.naming.core.ServiceInfoUpdateService$UpdateTask.run(ServiceInfoUpdateService.java:182)
   at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
   at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
   at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
   at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
   at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
   at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: com.alibaba.nacos.api.exception.NacosException: Client not connected,current status:UNHEALTHY
   at com.alibaba.nacos.common.remote.client.RpcClient.request(RpcClient.java:628)
   at com.alibaba.nacos.common.remote.client.RpcClient.request(RpcClient.java:608)
   at com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy.requestToServer(NamingGrpcClientProxy.java:203)
   ... 9 common frames omitted

nacos github项目上确实有人提出nacos-2.0.1版本出现过类似的问题，但是我们遇到的情况跟这个不是太一样，最终发现出现这个问题的原因在于ip地址的冲突，又看了部署在其他两个节点的服务nacos-client客户端没有抛出上面的异常信息。于是修改对应的ip后就没有上述异常信息抛出了。

发现ip地址冲突可以通过arping命令实现：

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