connect to <localhost:10909> failed

rocket mq 创建 topic 失败
mqadmin updateTopic

D:\software\rocketmq-all-4.4.0-bin-release\bin>mqadmin updateTopic -b localhost:10911 -n localhost:9876 -t interTopic
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0
org.apache.rocketmq.tools.command.SubCommandException: UpdateTopicSubCommand command failed
        at org.apache.rocketmq.tools.command.topic.UpdateTopicSubCommand.execute(UpdateTopicSubCommand.java:181)
        at org.apache.rocketmq.tools.command.MQAdminStartup.main0(MQAdminStartup.java:135)
        at org.apache.rocketmq.tools.command.MQAdminStartup.main(MQAdminStartup.java:86)
Caused by: org.apache.rocketmq.remoting.exception.RemotingConnectException: connect to <localhost:10909> failed
        at org.apache.rocketmq.remoting.netty.NettyRemotingClient.invokeSync(NettyRemotingClient.java:392)
        at org.apache.rocketmq.client.impl.MQClientAPIImpl.createTopic(MQClientAPIImpl.java:270)
        at org.apache.rocketmq.tools.admin.DefaultMQAdminExtImpl.createAndUpdateTopicConfig(DefaultMQAdminExtImpl.java:178)
        at org.apache.rocketmq.tools.admin.DefaultMQAdminExt.createAndUpdateTopicConfig(DefaultMQAdminExt.java:160)
        at org.apache.rocketmq.tools.command.topic.UpdateTopicSubCommand.execute(UpdateTopicSubCommand.java:135)
        ... 2 more

为什么他去连 connect to localhost:10909 f ，10909 这个端口啊。。

是因为rocket mq 没有启动成功，但是为什么启动不成功，我得去看log了