==> /var/log/ceilometer/ceilometer-agent-notification.log <==
2017-02-24 16:07:45.726 126 WARNING ceilometer.coordination [req-fb30b85e-2ea9-4f75-ae32-7ff2eac0200f - - - - -] Cannot extract tasks because agent failed to join group properly. Rejoining group.
2017-02-24 16:07:46.010 126 WARNING oslo.service.loopingcall [req-fb30b85e-2ea9-4f75-ae32-7ff2eac0200f - - - - -] Function 'ceilometer.coordination.PartitionCoordinator.run_watchers' run outlasted interval by 305.27 sec
2017-02-24 16:08:02.106 125 WARNING ceilometer.coordination [req-196371d4-f543-4376-9b7f-45d3b2676c50 - - - - -] Cannot extract tasks because agent failed to join group properly. Rejoining group.
2017-02-24 16:08:02.130 125 WARNING oslo.service.loopingcall [req-196371d4-f543-4376-9b7f-45d3b2676c50 - - - - -] Function 'ceilometer.coordination.PartitionCoordinator.run_watchers' run outlasted interval by 120.41 sec