Connectivity breaks between compute and controller

asked 2014-02-12 00:35:05 -0500

Akshat gravatar image

updated 2014-02-14 19:05:31 -0500

smaffulli gravatar image

Hi All,

I have a openstack setup(Grizzly) with 1 controller and multiple compute nodes. I am facing an issue where the connectivity of controller and one of the compute nodes breaks. The nova service-list command shows that compute as down.

I see the below error in the compute logs at the same time:

2014-02-11 03:06:16.216 28879 ERROR nova.servicegroup.drivers.db [-] model server went away
2014-02-11 03:06:16.216 28879 TRACE nova.servicegroup.drivers.db Traceback (most recent call last):
2014-02-11 03:06:16.216 28879 TRACE nova.servicegroup.drivers.db   File "/usr/lib/python2.6/site-packages/nova/servicegroup/drivers/db.py", line 88, in _report_state
2014-02-11 03:06:16.216 28879 TRACE nova.servicegroup.drivers.db     report_count = service.service_ref['report_count'] + 1
2014-02-11 03:06:16.216 28879 TRACE nova.servicegroup.drivers.db TypeError: 'NoneType' object is unsubscriptable

Also, restarting the nova-compute service on the compute node fixes the connectivity back.

Any pointers to debug this will be helpful.

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