[rabbitmq-discuss] Error starting rabbitmq in IPv6 environment

[Tyrrill, Ed]

I probably should have noted that I am using erlang R16B02.

Thanks,
Ed

From: <Tyrrill>, Edward Tyrrill <ed.tyrrill at emc.com<mailto:ed.tyrrill at emc.com>>
Reply-To: Discussions about RabbitMQ <rabbitmq-discuss at lists.rabbitmq.com<mailto:rabbitmq-discuss at lists.rabbitmq.com>>
Date: Wednesday, December 11, 2013 1:20 PM
To: Discussions about RabbitMQ <rabbitmq-discuss at lists.rabbitmq.com<mailto:rabbitmq-discuss at lists.rabbitmq.com>>
Subject: [rabbitmq-discuss] Error starting rabbitmq in IPv6 environment

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::1:1 a4ipn434.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<mailto:/data01/avamar/var/rabbitmq/log/rabbit at a4ipn434.log>
  ######  ##        /data01/avamar/var/rabbitmq/log/rabbit at a4ipn434-sasl.log<mailto:/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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