[rabbitmq-discuss] Cannot start or stop RabbitMQ using rabbitmqctl

Wed May 16 15:52:43 BST 2012

Hi Alvaro,

Thanks for the pointer. This is my output:

rabbitmq  5991   0.4  0.2  2492192  16184   ??  S     4:05PM   1:56.45
/opt/local/lib/erlang/erts-5.9/bin/beam.smp -W w -K true -A30 -P 1048576 --
-root /opt/local/lib/erlang -progname erl -- -home
/opt/local/var/lib/rabbitmq -- -noshell -noinput -sname rabbit at mrtn-1 -boot
/opt/local/var/lib/rabbitmq/mnesia/rabbit at mrtn-1-plugins-expand/rabbit
-kernel inet_default_connect_options [{nodelay,true}] -sasl errlog_type
error -sasl sasl_error_logger false -rabbit error_logger
{file,"/opt/local/var/log/rabbitmq/rabbit at mrtn-1.log"} -rabbit
sasl_error_logger {file,"/opt/local/var/log/rabbitmq/rabbit at mrtn-1-sasl.log"}
-os_mon start_cpu_sup false -os_mon start_disksup false -os_mon
start_memsup false -mnesia dir
"/opt/local/var/lib/rabbitmq/mnesia/rabbit at mrtn-1" -noshell -noinput
mrtn     13062   0.0  0.0  2435120    528 s000  R+    9:57AM   0:00.00 grep
rabbit
rabbitmq  6005   0.0  0.0  2435000    108   ??  S     4:05PM   0:00.00
inet_gethost 4
rabbitmq  6004   0.0  0.0  2434996    396   ??  Ss    4:05PM   0:00.01
inet_gethost 4
rabbitmq  5980   0.0  0.0  2435000    224   ??  S     4:05PM   0:00.50
/opt/local/lib/erlang/erts-5.9/bin/epmd -daemon

Strangely, why do I have a user named 'rabbitmq'?!

On Wed, May 16, 2012 at 9:28 AM, Alvaro Videla <videlalvaro at gmail.com>wrote:

> Hi,
>
> Basically the erlang.cookie belongs to a particular user. So the Erlang
> will load the cookie of the user running the commands rabbitmqctl,
> rabbitmq-server and so on.
>
> So if you want to gracefully stop that node you need to run *rabbitmqctl
> stop* with the same user that is running your current rabbitmq process.
>
> To find that user try running: *ps aux | grep rabbit*
>
> -Alvaro
>
>
> On Wed, May 16, 2012 at 3:14 PM, Merton Lister <mrtnlstr at gmail.com> wrote:
>
>> Hi Tim,
>>
>> Thanks for getting back to me. I am new to rabbitmq so not very familiar
>> with the details you're asking for.
>>
>> Here is what I see in /opt/local/var/lib/rabbitmq/.erlang.cookie:
>>
>> QFZXZBPOMTJNACQIMJOT
>>
>> and sudo rabbitmqctl status gives me:
>>
>> Status of node rabbit at h002 ...
>> Error: unable to connect to node rabbit at h002: nodedown
>>
>> DIAGNOSTICS
>> ===========
>>
>> nodes in question: [rabbit at h002]
>>
>> hosts, their running nodes and ports:
>> - h002: [{rabbit,62428},{rabbitmqctl12565,55147}]
>>
>> current node details:
>> - node name: rabbitmqctl12565 at h002
>>  - home dir: /opt/local/var/lib/rabbitmq
>> - cookie hash: q7VU0JjCd0VG7jOEF9Hf/g==
>>
>> I installed rabbitmq by following the instructions given here:
>> http://www.rabbitmq.com/install-macports.html, after which I ran sudo
>> rabbitmq-server -detached to start the server. Now I want to stop the
>> server using sudo rabbitmqctl stop, but it simply does not allow me to
>> do so by the looks of it.
>>
>> I wonder what causes this kind of behavior? Am I running *multiple*
>> rabbitmq servers/nodes on my machine now, and somehow I am not allowed to
>> access some of them? Your help is much appreciated. Thanks.
>>
>>
>>
>> Best,
>> Merton
>>
>> On Wed, May 16, 2012 at 8:42 AM, tim <tim at rabbitmq.com> wrote:
>>
>>> On 16/05/2012 13:24, mrtn wrote:
>>>
>>>>
>>>> Hi,
>>>>
>>>> I installed the latest RabbitMQ via macports on OS X 10.6.8, and have
>>>> been trying to run it on localhost. However, after I started the
>>>> server using 'sudo rabbitmq-server -detached', I cannot stop the
>>>> server/node, nor can I start a new one (as expected). Below is the
>>>> output: first, I try to start a new server but failed because there is
>>>> already running; second, I then try to stop the existing server/node
>>>> but get told it is already down. Can anyone point out what is going on
>>>> here?!
>>>>
>>>> mrtn:MyLab mrtn$ sudo rabbitmq-server -detached
>>>> Activating RabbitMQ plugins ...
>>>> 0 plugins activated:
>>>>
>>>> node with name "rabbit" already running on "h002"
>>>>
>>>> DIAGNOSTICS
>>>> ===========
>>>>
>>>> nodes in question: [rabbit at h002]
>>>>
>>>> hosts, their running nodes and ports:
>>>> - h002: [{rabbit,62428},{**rabbitmqprelaunch12073,54048}]
>>>>
>>>> current node details:
>>>> - node name: rabbitmqprelaunch12073 at h002
>>>> - home dir: /opt/local/var/lib/rabbitmq
>>>> - cookie hash: q7VU0JjCd0VG7jOEF9Hf/g==
>>>>
>>>> mrtn:MyLab mrtn$ sudo rabbitmqctl stop
>>>> Stopping and halting node rabbit at h002 ...
>>>> Error: unable to connect to node rabbit at h002: nodedown
>>>>
>>>> DIAGNOSTICS
>>>> ===========
>>>>
>>>> nodes in question: [rabbit at h002]
>>>>
>>>> hosts, their running nodes and ports:
>>>> - h002: [{rabbit,62428},{**rabbitmqctl12108,54053}]
>>>>
>>>> current node details:
>>>> - node name: rabbitmqctl12108 at h002
>>>> - home dir: /opt/local/var/lib/rabbitmq
>>>> - cookie hash: q7VU0JjCd0VG7jOEF9Hf/g==
>>>> ______________________________**_________________
>>>> rabbitmq-discuss mailing list
>>>> rabbitmq-discuss at lists.**rabbitmq.com<rabbitmq-discuss at lists.rabbitmq.com>
>>>> https://lists.rabbitmq.com/**cgi-bin/mailman/listinfo/**
>>>> rabbitmq-discuss<https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss>
>>>>
>>>
>>> Is the existing rabbit running with the same Erlang cookie as the new
>>> one? The cookie hash produced by rabbitmqctl is for the current node, not
>>> the one you're attempting to contact.
>>>
>>> The list of nodes/ports on the given host indicates which Erlang nodes
>>> are up, but not necessarily whether they're allowed to connect to or not.
>>> Check your cookie and let us know how you get on.
>>>
>>> Tim
>>>
>>
>>
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>> https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss
>>
>>
>
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