unable to connect to epmd (port 4369) on Server_A: timeout (timed out)

[Puneet Aggarwal]

Hello Team -

we are getting issue below issue, we have cluster where we need to add 3 Nodes, and i was able to connect Server_C to Server_A and but not able to connect Server_B due to below issues, so i try to remove Server_C to test if something wrong with master node. But now i am not able to connect Server_C as well due to below issue only. 

Anyone ever experience this issue?

[root@Server_B ~]# rabbitmqctl join_cluster rabbit@Server_A
Clustering node rabbit@Server_B with rabbit@Server_A
Error: unable to perform an operation on node 'rabbit@Server_A'. 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@Server_A
 * If target node is configured to use long node names, don't forget to use --longnames with CLI tools

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

attempted to contact: [rabbit@Server_A]

rabbit@Server_A:
  * unable to connect to epmd (port 4369) on Server_A: timeout (timed out)


Current node details:
 * node name: 'rabbitmqcli-582-rabbit@Server_B'
 * effective user's home directory: /var/lib/rabbitmq
 * Erlang cookie hash: o843zgX8A2bVMhFh/X6gWw==

Regards,

Puneet Aggarwal

[Puneet Aggarwal]

Please ignore as i was able to resolve this issue.

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[Md Monirul Islam Ansari]

Warm regards Puneet,
  Actually I am also facing same problem as you did. Can it be possible to share your valuable thoughts on how are you able to sort out that ptobem ?

Thanks and regards,
 Md Monirul Islam Ansari
 Student,Department of Library Information Science,
University of Kalyani