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I would also check permissions on log file (maybe it has root owner or 
something).
The best way is to start the service with the "neutron" user, it might 
output a reason for the service to fail (I know it seems to be running 
but it actually does not run).
Also it might be good to run "echo $?" in order to try to spot the issue 
by the return code.


On 10/18/2013 12:05 PM, Li, Leon wrote:
>
> Hi,
>
> From the output, the RabbitMQ should be fine, right?
>
> root at xxxxxx:~# service rabbitmq-server status
>
> Status of node rabbit at i2052247 ...
>
> [{pid,1779},
>
> {running_applications,[{rabbit,"RabbitMQ","2.7.1"},
>
> {os_mon,"CPO  CXC 138 46","2.2.7"},
>
> {sasl,"SASL  CXC 138 11","2.1.10"},
>
> {mnesia,"MNESIA  CXC 138 12","4.5"},
>
> {stdlib,"ERTS  CXC 138 10","1.17.5"},
>
> {kernel,"ERTS  CXC 138 10","2.14.5"}]},
>
> {os,{unix,linux}},
>
> {erlang_version,"Erlang R14B04 (erts-5.8.5) [source] [64-bit] [rq:1] 
> [async-threads:30] [kernel-poll:true]\n"},
>
> {memory,[{total,26175728},
>
> {processes,11653152},
>
> {processes_used,11644440},
>
> {system,14522576},
>
>       {atom,1124433},
>
> {atom_used,1120215},
>
> {binary,126024},
>
> {code,11134393},
>
> {ets,819856}]},
>
> {vm_memory_high_watermark,0.3999999994248726},
>
> {vm_memory_limit,417298841}]
>
> ...done.
>
> root at xxxxxx:~#
>
> Leon
>
> *From:*Sushma Korati [mailto:sushma_korati at persistent.co.in]
> *Sent:* 2013?10?13?0:23
> *To:* Li, Leon
> *Cc:* openstack at lists.openstack.org
> *Subject:* RE: [Openstack] [neutron] Connection to neutron failed: 
> Maximum attempts reached
>
> Hi Li,
>
> I am not sure how to clear connection pool but even we faced a similar 
> issued because rabiitmq server was not running.
>
> Can you check if AMQP server is running properly or not?
>
> Regards,
>
> Sushma Korati
>
> sushma_korati at persistent.co.in <mailto:sushma_korati at persistent.co.in> 
> | Tel: +91(40)674 42244
>
> Persistent Systems Ltd. | Partners in Innovation| 
> www.persistentsys.com <http://www.persistentsys.com>
>
> PPlease consider your environmental responsibility: Before printing 
> this e-mail or any other document, ask yourself whether you need a 
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>
> ------------------------------------------------------------------------
>
> *From:*Li, Leon [Leon.Li2 at emc.com]
> *Sent:* Saturday, October 12, 2013 2:04 PM
> *To:* openstack at lists.openstack.org <mailto:openstack at lists.openstack.org>
> *Subject:* [Openstack] [neutron] Connection to neutron failed: Maximum 
> attempts reached
>
> Hi,
>
> I'm installing Havana and meet a problem when run command "neutron 
> agent-list".
>
> root at i2052247:~# neutron agent-list
>
> Connection to neutron failed: Maximum attempts reached
>
> Actually it would have same failure when run any neutron command.
>
> I found bugs https://bugs.launchpad.net/neutron/+bug/1211915 and 
> https://bugs.launchpad.net/nova/+bug/1229475/comments/14. Workaround 
> is " Forcibly clear connection pool".
>
> Does anyone know how to clear connection pool on Neutron/Havana?
>
> Leon
>
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-- 

Thanks,

Rami Vaknin, QE @ Red Hat, TLV, IL.

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