[rabbitmq-discuss] Identifying TCP Listeners.

Tue Apr 17 11:10:40 BST 2012

On Mon, 2012-04-16 at 15:45 +0100, Matthias Radestock wrote:
> The above configuration is invalid. The entry should be
> {kernel, [{inet_dist_use_interface, {127,0,0,1}}]}

Ok

> The fact that rabbit started up fine suggests that it didn't read the 
> config at all. Check the broker start up log, which should contain the line
> config file(s) : /etc/rabbitmq/rabbitmq.config

The startup_log contains -

node           : rabbit at workstation
app
descriptor : /usr/lib/rabbitmq/lib/rabbitmq_server-2.7.0/sbin/../ebin/rabbit.app
home dir       : /var/lib/rabbitmq
config file(s) : /etc/rabbitmq/rabbitmq.config
cookie hash    : W563d5DpLXI3d5BxbptjVw==
log            : /var/log/rabbitmq/rabbit at workstation.log
sasl log       : /var/log/rabbitmq/rabbit at workstation-sasl.log
database dir   : /var/lib/rabbitmq/mnesia/rabbit at workstation
erlang version : 5.9

But adding the above the config file makes Rabbit unable to shutdown
properly (if added while the service is running) or unable to start (it
hangs).

> export ERL_EPMD_DIST_BIND=172.0.0.1

This variable doesn't effect what ports are opened.  

I added ". /etc/sysconfig/rabbitmq" to the startup file and that file
contains:

export ERL_EPMD_DIST_BIND=127.0.0.1

Something & Erlang still opens all interfaces:

tcp  0.0.0.0:4369       0.0.0.0:*   LISTEN      32571/epmd
tcp  127.0.0.1:55672    0.0.0.0:*   LISTEN      32603/beam.smp      
tcp  0.0.0.0:52445      0.0.0.0:*   LISTEN      32603/beam.smp
tcp  127.0.0.1:5672     0.0.0.0:*   LISTEN      32603/beam.smp

The config has managed to restric rabbit's service as well as the
management interface.

rabbitmq-server-2.7.0-1.suse.noarch
Linux 3.1.0-1.2-desktop

workstation:~ # cat /etc/rabbitmq/rabbitmq.config 
[
  {rabbit,        {tcp_listeners,               [{'127.0.0.1',5672}]},
                  {collect_statistics_interval, 10000} ] },
  {rabbitmq_management,  [ {http_log_dir,   "/tmp/rabbit-mgmt"} ] },
  {rabbitmq_management_agent, [ {force_fine_statistics, true} ] },
  {rabbitmq_mochiweb, [ {listeners, [{mgmt, [{port, 55672},
                                             {ip, "127.0.0.1"}]}]},
                        {default_listener, [{port, 60000} ] } ] }
].

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