可能遇到问题
错误一、在添加节点node7到node6上时，遇到连接不上node6节点机器
[root@csh07 ~]
# rabbitmqctl -n rabbit7@csh07 join_cluster rabbit6@csh06
Clustering node
'rabbit7@csh07'
with
'rabbit6@csh06'
...
Error: unable to connect to nodes [
'rabbit6@csh06'
]: nodedownDIAGNOSTICS===========attempted to contact: [
'rabbit6@csh06'
]rabbit6@csh06: * unable to connect to epmd (port
4369
) on csh06: nxdomain (non-existing domain)current node details:- node name:
'rabbitmq-cli-45@csh07'
- home dir: /var/lib/rabbitmq- cookie hash: a5xQrcy5rMqVgP/ZCwWUPA==
解决：
在所有机器上的/etc/hosts文件加上如下配置，主要是添加csh06,csh07,csh08映射
192.168.1.6 node6 csh06192.168.1.7 node7 csh07192.168.1.8 node8 csh08
错误二、若提示如下：
Error: unable to connect to nodes [rabbit@YUNWEI_SDK_MQ1]: nodedown
DIAGNOSTICS
===========
attempted to contact: [rabbit@YUNWEI_SDK_MQ1]
rabbit@YUNWEI_SDK_MQ1:
* connected to epmd (port 4369) on YUNWEI_SDK_MQ1
* epmd reports node 'rabbit' running on port 25672
* TCP connection succeeded but Erlang distribution failed
* Authentication failed (rejected by the remote node), please check the Erlang cookie
current node details:
- node name: 'rabbitmq-cli-45@localhost'
- home dir: /home/dhom
- cookie hash: U9JeFZ6igIdmU5eHLm5Rrw==
解决办法：
尝试将主节点$HOME下的.erlang.cookie
原封不动的拷贝过来（注意：MD5必须一样），并且赋予600权限即可
