[rabbitmq-discuss] Error starting rabbitmq in IPv6 environment

Thu Dec 12 10:50:44 GMT 2013

This looks like more of an Erlang-level problem, looks like it is 
failing before RabbitMQ starts starting. Can you start "erl -sname foo" 
in pure IPv6 mode?

And of course, just to make sure, you can resolve a4ipn434, right? :-)

Cheers, Simon

On 11/12/2013 21:20, Tyrrill, Ed wrote:
> Hi RabbitMQ devs,
>
> I have found a bug starting rabbitmq in a linux pure IPv6 environment
> where /etc/resolv.conf has a "nameserver" line specifying an IPv6
> address.  This is what I see:
>
> # service rabbitmq-server start
> Starting rabbitmq-server: FAILED - check /var/log/rabbitmq/startup_{log,
> _err}
> rabbitmq-server.
> # cat /var/log/rabbitmq/startup_log
> ERROR: epmd error for host "a4ipn434": address (cannot connect to host/port)
>
> Note that /etc/hosts specifies the FQ and short hostnames of the machine:
>
> 2620:0:170:586::1:1a4ipn434.xxxxxxxxxxx a4ipn434
>
> And /etc/resolv.conf specifies a nameserver with an IPv6 address:
>
> nameserver 2620:0:170:58e::4
>
> If I comment out this nameserver line in resolv.conf, then rabbitmq
> starts with no problem:
>
> # service rabbitmq-server start
> Starting rabbitmq-server: SUCCESS
> rabbitmq-server.
> # cat /var/log/rabbitmq/startup_log
>
>                RabbitMQ 3.2.0. Copyright (C) 2007-2013 GoPivotal, Inc.
>    ##  ##      Licensed under the MPL.  See http://www.rabbitmq.com/
>    ##  ##
>    ##########  Logs: /data01/avamar/var/rabbitmq/log/rabbit at a4ipn434.log
>    ######  ##
>   /data01/avamar/var/rabbitmq/log/rabbit at a4ipn434-sasl.log
>    ##########
>                Starting broker... completed with 0 plugins.
>
> Also, FYI, I tried this with rabbitmq versions 3.2.1-1 and 3.2.0-1.
>
> Thanks,
> Ed
>
>
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