1. 背景

在这里插入图片描述
启动RocketMQ,然后使用客户端发送数据失败

2. 启动

lcc@lcc rocketmq-all-4.5.0-bin-release$ sh bin/mqnamesrv
Java HotSpot(TM) 64-Bit Server VM warning: Using the DefNew young collector with the CMS collector is deprecated and will likely be removed in a future release
Java HotSpot(TM) 64-Bit Server VM warning: UseCMS