具体出错信息如下：
[[email protected] ~]# rabbitmqctl change_password guest RABBIT_PASS Changing password for user "guest" ... Error: unable to connect to node [email protected]: nodedown DIAGNOSTICS =========== nodes in question: [[email protected]] hosts, their running nodes and ports: - unable to connect to epmd on blockstorage: timeout (timed out) current node details: - node name: [email protected] - home dir: /var/lib/rabbitmq - cookie hash: 9MAewQpNA2Hn9l2WPQ++rw==
解决方案：在/etc/hosts文件中加入一行“127.0.0.1 主机名”即可，加入IP地址和主机名是不行的。
[[email protected] ~]# vi /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 127.0.0.1 blockstorage 192.168.155 blockstorage
然后，启动查看状态皆OK
[[email protected] ~]# systemctl start rabbitmq-server.service
[[email protected] ~]# rabbitmqctl status
Status of node [email protected] ...
[{pid,2378},
{running_applications,[{rabbit,"RabbitMQ","3.1.5"},
{mnesia,"MNESIA CXC 138 12","4.11"},
{os_mon,"CPO CXC 138 46","2.2.14"},
{xmerl,"XML parser","1.3.6"},
{sasl,"SASL CXC 138 11","2.3.4"},
{stdlib,"ERTS CXC 138 10","1.19.4"},
{kernel,"ERTS CXC 138 10","2.16.4"}]},
{os,{unix,linux}},
{erlang_version,"Erlang R16B03-1 (erts-5.10.4) [source] [64-bit] [smp:2:2] [async-threads:30] [hipe] [kernel-poll:true]\n"},
{memory,[{total,35634312},
{connection_procs,2800},
{queue_procs,5600},
{plugins,0},
{other_proc,13661600},
{mnesia,60544},
{mgmt_db,0},
{msg_index,22776},
{other_ets,779744},
{binary,10464},
{code,16441504},
{atom,594537},
{other_system,4054743}]},
{vm_memory_high_watermark,0.4},
{vm_memory_limit,6664211660},
{disk_free_limit,1000000000},
{disk_free,82254290944},
{file_descriptors,[{total_limit,924},
{total_used,3},
{sockets_limit,829},
{sockets_used,1}]},
{processes,[{limit,1048576},{used,123}]},
{run_queue,0},
{uptime,13}]
...done.
[[email protected] ~]#
时间： 2024-07-31 18:43:06