gistfile1.txt

# rabbitmq-server 

              RabbitMQ 3.6.2. Copyright (C) 2007-2016 Pivotal Software, Inc.
  ##  ##      Licensed under the MPL.  See http://www.rabbitmq.com/
  ##  ##
  ##########  Logs: /var/log/rabbitmq/[email protected]
  ######  ##        /var/log/rabbitmq/[email protected]
  ##########
              Starting broker...


BOOT FAILED
===========

Error description:
   {could_not_start,rabbit,
       {error,
           {{shutdown,
                {failed_to_start_child,rabbit_epmd_monitor,
                    {{badmatch,noport},
                     [{rabbit_epmd_monitor,init,1,
                          [{file,"src/rabbit_epmd_monitor.erl"},{line,60}]},
                      {gen_server,init_it,6,
                          [{file,"gen_server.erl"},{line,328}]},
                      {proc_lib,init_p_do_apply,3,
                          [{file,"proc_lib.erl"},{line,240}]}]}}},
            {child,undefined,rabbit_epmd_monitor_sup,
                {rabbit_restartable_sup,start_link,
                    [rabbit_epmd_monitor_sup,
                     {rabbit_epmd_monitor,start_link,[]},
                     false]},
                transient,infinity,supervisor,
                [rabbit_restartable_sup]}}}}

Log files (may contain more information):
   /var/log/rabbitmq/[email protected]
   /var/log/rabbitmq/[email protected]

{"init terminating in do_boot",{could_not_start,rabbit,{error,{{shutdown,{failed_to_start_child,rabbit_epmd_monitor,{{badmatch,noport},[{rabbit_epmd_monitor,init,1,[{file,"src/rabbit_epmd_monitor.erl"},{line,60}]},{gen_server,init_it,6,[{file,"gen_server.erl"},{line,328}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,240}]}]}}},{child,undefined,rabbit_epmd_monitor_sup,{rabbit_restartable_sup,start_link,[rabbit_epmd_monitor_sup,{rabbit_epmd_monitor,start_link,[]},false]},transient,infinity,supervisor,[rabbit_restartable_sup]}}}}}

stumbled upon this myself.
Turns out rabbit resolves hosts by short names instead of FQDN by default, so check your /etc/hosts and DNS.