[GitHub] [rocketmq] wwj-radish edited a discussion: controller通知broker变更失败，导致两个broker一直是master

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GitHub user wwj-radish edited a discussion: 
controller通知broker变更失败，导致两个broker一直是master

broker监听端口是10911，然后服务都是正常了，日志都没有报错。但是在controller通知broker变更角色的时候，提示这个错误。可以帮忙看下是什么原因吗？

`2023-06-07 18:01:44 ERROR ControllerManager_NotifyService_2 - Failed to notify 
broker 192.168.105.104:10911 that role changed
org.apache.rocketmq.remoting.exception.RemotingConnectException: connect to  
failed
        at 
org.apache.rocketmq.remoting.netty.NettyRemotingClient.invokeOneway(NettyRemotingClient.java:759)
        at 
org.apache.rocketmq.controller.ControllerManager.doNotifyBrokerRoleChanged(ControllerManager.java:210)
        at 
org.apache.rocketmq.controller.ControllerManager$NotifyService.lambda$notifyBroker$0(ControllerManager.java:302)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:750)`


GitHub link: https://github.com/apache/rocketmq/discussions/6869

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