centos7.3系统 执行 journalctl -xe > aa ，然后vi aa 找到Error 找到了这个 8月 31 09:21:32 linux-node4.openstack rabbitmqctl[8536]: Error: Failed to initialize erlang distribution: {{shutdown,
owned by: root dated: Thu Aug 31 15:02:02 2017
8月 31 09:21:30 linux-node4.openstack rabbitmq-server[8422]: Kernel pid terminated (application_controller) ({application_start_failure,kernel,{{shutdown,{failed_to_start_child,net_sup,{shutdown,{failed_to_start_child,auth,{"Cookie file /var/lib/rabbitmq/.erl 8月 31 09:21:30 linux-node4.openstack rabbitmq-server[8422]: Crash dump is being written to: erl_crash.dump...done 8月 31 09:21:30 linux-node4.openstack systemd[1]: rabbitmq-server.service: main process exited, code=exited, status=1/FAILURE 8月 31 09:21:32 linux-node4.openstack rabbitmqctl[8536]: Error: Failed to initialize erlang distribution: {{shutdown, 8月 31 09:21:32 linux-node4.openstack rabbitmqctl[8536]: {failed_to_start_child, 8月 31 09:21:32 linux-node4.openstack rabbitmqctl[8536]: auth, 8月 31 09:21:32 linux-node4.openstack rabbitmqctl[8536]: {"Cookie file /var/lib/rabbitmq/.erlang.cookie must be accessible by owner only", 8月 31 09:21:32 linux-node4.openstack rabbitmqctl[8536]: [{auth,init_cookie,0, 8月 31 09:21:32 linux-node4.openstack rabbitmqctl[8536]: [{file,"auth.erl"},8月 31 09:21:32 linux-node4.openstack rabbitmqctl[8536]: {line,286}]},
解决办法 把相关rabbitmq的软件包都卸载掉，然后执行 find / name "*rabbitmq*" -exec rm -rf {} \; 也可以参考 https://gxnotes.com/article/113533.html 比较详细
