[rabbitmq-discuss] Why is it so difficult to setup clustering ?

[John Smith]

Well, it seems my newly installed rabbit is misbehaving.  


Both RabbitMQ and Erlang are current versions off their relative APT feeds (http://packages.erlang-solutions.com/debian, http://www.rabbitmq.com/debian/).   One node is running Ubuntu 12.04LTS, the other 14.04LTS but I can't see that making a difference as long as Rabbit and Erlang match ? 


For the purposes of this email, we'll call the Ubuntu 12 node U12 and the Ubuntu 14 node U14.


I have synched the Rabbit cookie file.

I can ping between both nodes, they are on the same subnet, no firewalls.


If I try clustering from U12 to U14, I get :

Error: {'EXIT',
           {function_clause,
               [{rabbit_control,action,
                    [join_cluster,'rabbit at U12',
                     ["rabbit at U14"],
                     [{"-p","/"},{"-n","rabbit at U14"},{"-q",false}],
                     #Fun<rabbit_control.1.115240681>],
                    []},
                {rabbit_control,start,0,[]},
                {init,start_it,1,[]},
                {init,start_em,1,[]}]}}


If I try from U14 to U12, I get :

Clustering node 'rabbit at U14' with 'rabbit at U12' ...
Error: unable to connect to nodes ['rabbit at U12]: {'EXIT',{undef,[{rabbit_mnesia,cluster_status_from_mnesia,[],[]},{rpc,'-handle_call_call/6-fun-0-',5,[{file,[114,112,99,46,101,114,108]},{line,205}]}]}}

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

attempted to contact: ['rabbit at U12']

rabbit at U12:
  * connected to epmd (port 4369) on U12
  * node rabbit at U12 up, 'rabbit' application running

current node details:
- node name: 'rabbitmqctl9529 at U14'
- home dir: /var/lib/rabbitmq
- cookie hash: YhcBiH/OYzC0Gqx1id7VZg==
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