当执行rabbitmq-plugins enable rabbitmq_management指令时出现错误
Applying plugin configuration to [email protected] failed.
* Could not contact node [email protected]
Changes will take effect at broker restart.
* Options: --online - fail if broker cannot be contacted.
--offline - do not try to contact broker.
这个是因为当Rabbitmq安装时默认目录是RabbitMQ server中有个空格（non-ACSII字符）
解决方法是将RabbitMQ重新安装，在安装时将文件夹的空格去掉后安装完成后重新执行命令