OpenStack Compute (nova)

nova service state stops updating after SQL connection lost

Bug #1518927 reported by György Szombathelyi
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This bug affects 1 person
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OpenStack Compute (nova)
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Bug Description

After nova-conductor loses mysql connection, it stops to update the service 'Updated_at' status.
After logging the error:
ERROR oslo.service.loopingcall [-] Fixed interval looping call 'nova.servicegroup.drivers.db.DbDriver._report_state' failed
.
.
.
DBConnectionError: (pymysql.err.OperationalError) (2003, "Can't connect to MySQL server on '10.97.36.127' ((2013, 'Lost connection to MySQL server during query'))") [SQL: u'SELECT 1']

After some tracing, it seems nova.servicegroup.drivers.db _report state is never called again. Restarting the service correctly restarts reporting, too. Probably the reporting thread got stuck?

Using Liberty from Ubuntu Cloud Archive: 2:12.0.0-0ubuntu2~cloud0

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