[rabbitmq-discuss] A cluster on a single machine

[David Fooks]

Ok the above script is missing something:

...
rabbitmqctl -n rabbit3 stop_app
rabbitmqctl -n rabbit3 reset
rabbitmqctl -n rabbit3 cluster rabbit1 at dfooks-ubuntu64 
rabbit2 at dfooks-ubuntu64
rabbitmqctl -n rabbit3 start_app

But this after this change I still get the error.

On Friday, 4 May 2012 17:46:29 UTC+1, David Fooks wrote:
>
> Hi,
>
> I'm trying to emulate the guide here: 
> http://www.rabbitmq.com/clustering.html
>
> But I'm having a lot of issues! Every time I run I seem to be getting a 
> different crash. Is this feature actually supported in 2.8.1?
>
> Is there a proper way to completely reset all of the state that rabbitmq 
> creates about other nodes/the cluster? My clean up script at the moment 
> looks like this:
>
> rm /var/run/rabbitmq/*
> rm -f /var/log/rabbitmq/*
> rm -rf /var/lib/rabbitmq/*
>
> Here is my start-up script (I'm running this with sudo):
>
> RABBITMQ_NODE_PORT=5672 RABBITMQ_NODENAME=rabbit1 
> RABBITMQ_SERVER_START_ARGS="-rabbitmq_mochiweb listeners 
> [{mgmt,[{port,55672}]}]" rabbitmq-server -detached
> RABBITMQ_NODE_PORT=5673 RABBITMQ_NODENAME=rabbit2 
> RABBITMQ_SERVER_START_ARGS="-rabbitmq_mochiweb listeners 
> [{mgmt,[{port,55673}]}]" rabbitmq-server -detached
> RABBITMQ_NODE_PORT=5674 RABBITMQ_NODENAME=rabbit3 
> RABBITMQ_SERVER_START_ARGS="-rabbitmq_mochiweb listeners 
> [{mgmt,[{port,55674}]}]" rabbitmq-server -detached
>
> ps -ef | grep rabbit1 | grep -v grep | awk '{print $2}' > 
> /var/run/rabbitmq/rabbit1.pid
> ps -ef | grep rabbit2 | grep -v grep | awk '{print $2}' > 
> /var/run/rabbitmq/rabbit2.pid
> ps -ef | grep rabbit3 | grep -v grep | awk '{print $2}' > 
> /var/run/rabbitmq/rabbit3.pid
>
> rabbitmqctl -n rabbit1 wait /var/run/rabbitmq/rabbit1.pid
> rabbitmqctl -n rabbit2 wait /var/run/rabbitmq/rabbit2.pid
> rabbitmqctl -n rabbit3 wait /var/run/rabbitmq/rabbit3.pid
>
> rabbitmqctl -n rabbit1 stop_app
> rabbitmqctl -n rabbit1 reset
> rabbitmqctl -n rabbit1 start_app
>
> rabbitmqctl -n rabbit2 stop_app
> rabbitmqctl -n rabbit2 reset
> rabbitmqctl -n rabbit2 start_app
>
> rabbitmqctl -n rabbit3 stop_app
> rabbitmqctl -n rabbit3 reset
> rabbitmqctl -n rabbit3 start_app
>
> rabbitmqctl -n rabbit1 status
> rabbitmqctl -n rabbit2 status
> rabbitmqctl -n rabbit3 status
>
> rabbitmqctl -n rabbit3 stop_app
> rabbitmqctl -n rabbit3 cluster rabbit1 at dfooks-ubuntu64 
> rabbit2 at dfooks-ubuntu64
> rabbitmqctl -n rabbit3 start_app
>
> If I run the "clean" script and then this script I get the following 
> warning (after all of the status returns ok):
>
> ...
> Stopping node 'rabbit3 at dfooks-ubuntu64' ...
> ...done.
> Clustering node 'rabbit3 at dfooks-ubuntu64' with ['rabbit1 at dfooks-ubuntu64',
>                                                 'rabbit2 at dfooks-ubuntu64'] 
> ...
> Error: {unable_to_join_cluster,
>            ['rabbit1 at dfooks-ubuntu64','rabbit2 at dfooks-ubuntu64'],
>            {merge_schema_failed,
>                "Incompatible schema cookies. Please, restart from old 
> backup.'rabbit1 at dfooks-ubuntu64' = 
> [{name,schema},{type,set},{ram_copies,[]},{disc_copies,['rabbit1 at dfooks-ubuntu64']},{disc_only_copies,[]},{load_order,0},{access_mode,read_write},{index,[]},{snmp,[]},{local_content,false},{record_name,schema},{attributes,[table,cstruct]},{user_properties,[]},{frag_properties,[]},{cookie,{{1336,149567,596521},'rabbit1 at dfooks-ubuntu64'}},{version,{{3,0},{'rabbit1 at dfooks-ubuntu64',{1336,149572,870479}}}}], 
> 'rabbit3 at dfooks-ubuntu64' = 
> [{name,schema},{type,set},{ram_copies,['rabbit3 at dfooks-ubuntu64']},{disc_copies,['rabbit2 at dfooks-ubuntu64']},{disc_only_copies,[]},{load_order,0},{access_mode,read_write},{index,[]},{snmp,[]},{local_content,false},{record_name,schema},{attributes,[table,cstruct]},{user_properties,[]},{frag_properties,[]},{cookie,{{1336,149568,520459},'rabbit2 at dfooks-ubuntu64'}},{version,{{3,0},{'rabbit3 at dfooks-ubuntu64',{1336,149572,882518}}}}]\n"}}
> Starting node 'rabbit3 at dfooks-ubuntu64' ...
> Error: {cannot_start_application,rabbitmq_management,
>            {bad_return,
>                {{rabbit_mgmt_app,start,[normal,[]]},
>                 {'EXIT',
>                     {shutdown,
>                         {gen_server2,call,
>                             
> [<4885.932.0>,{init,<4885.930.0>},infinity]}}}}}}
>
> I've read about this error in other threads but it generally seems to be 
> about network settings being reconfigured between nodes. I shouldn't have 
> these problems since each instance is on the same machine.
>
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