[rabbitmq-discuss] Cluster breakage

Tue Feb 19 12:16:34 GMT 2013

Hi,

We observed following Error Log in RabbitMQ logs
(var/log/rabbit/logfile.log)

=ERROR REPORT==== 14-Feb-2013::07:57:12 ===

** Node 'rabbit at XXXXXX02' not responding **

** Removing (timedout) connection **

=INFO REPORT==== 14-Feb-2013::07:57:12 ===

rabbit on node 'rabbit at XXXXX02' down

Does that imply that there is some problem with network ?

Could you please conclude the problem.

Thanks in advance.

Please respond.

On Tue, Feb 19, 2013 at 4:53 PM, PSL 88506 <psl88506 at gmail.com> wrote:

> Thanks a ton.
>
> So you mean to say that there could be some network interruptions for some
> seconds of time which made RabbitMQ cluster to break. Please confirm
>
> Hence you suggested to set the net_ticktime parameter to the kernel
> application. Please confirm
>
> One more question - could you please let us know the file and filepath
> where net_ticktime can be adjusted.
>
> Thanks in advance.
>
>
> On Tue, Feb 19, 2013 at 4:09 PM, Emile Joubert <emile at rabbitmq.com> wrote:
>
>>
>> Hi,
>>
>> On 19/02/13 10:07, PSL 88506 wrote:
>> > machine-1 shows machine - 1 and machine - 3 are running and machine-2 is
>> > Node not running.
>> >
>> > machine-2 shows machine - 2 is running and machine-1 and  machine-3 are
>> > Node not running.
>> >
>> > machine-3 shows machine - 1 and machine - 3 are running and machine-2 is
>> > Node not running.
>>
>> This is entirely consistent with a network interruption.
>>
>> > We checked with network team, if there are any network fluctuations
>> > during that period.
>>
>> The most likely explanation for what you saw is a network interruption.
>> If clustered nodes are not able to communicate for some period (about a
>> minute by default) then the cluster will break. Rabbit clusters do not
>> cope well in such environments. You should use federation or the shovel
>> instead if you have poor network reliability:
>>
>> http://www.rabbitmq.com/partitions.html
>>
>>
>>
>>
>> -Emile
>>
>>
>>
>>
>>
>
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