rabbitmq操作报错_error: unable to perform an operation on node 'rab

安装好rabbitmq后一次停止操作后,然后用rabbitmqctl start_app或者别的操作都是报错,报错如下

Error: unable to perform an operation on node 'rabbit@localhost'. Please see diagnostics information and suggestions below.

Most common reasons for this are:

 * Target node is unreachable (e.g. due to hostname resolution, TCP connection or firewall issues)
 * CLI tool fails to authenticate with the server (e.g. due to CLI tool's Erlang cookie not matching that of the server)
 * Target node is not running

In addition to the diagnostics info below:

 * See the CLI, clustering and networking guides on https://rabbitmq.com/documentation.html to learn more
 * Consult server logs on node rabbit@localhost
 * If target node is configured to use long node names, don't forget to use --longnames with CLI tools

DIAGNOSTICS
===========

attempted to contact: [rabbit@localhost]

rabbit@localhost:
  * connected to epmd (port 4369) on localhost
  * epmd reports: node 'rabbit' not running at all
                  no other nodes on localhost
  * suggestion: start the node

Current node details:
 * node name: 'rabbitmqcli-57247-rabbit@localhost'
 * effective user's home directory: /var/lib/rabbitmq
 * Erlang cookie hash: unswVCIRfHzkYWCn9Y3/lw==
实际上这有可能是因为我们停止的时候进程并未完全关闭,导致后续重启失败,rabbitmq没有启动.

Rabbitmq-server默认占用的端口号有：5672、15672、25672、4369

命令查看这几个端口的进程情况:

root@public44 ~]# ss -tnlp |grep  15672

[root@public44 ~]# ss -tnlp |grep  5672

[root@public44 ~]# ss -tnlp |grep  25672

[root@public44 ~]# ss -tnlp |grep  4369

发现4369这个端口的确被进程占用

然后kill - 9 52028

然后重新再启动就可以了