[root@csky01 ~]# tail -f /var/log/ceilometer/compute.log

2015-05-01 16:41:18.038 19053 TRACE ceilometer.coordination 

2015-05-01 16:41:18.039 19053 ERROR ceilometer.coordination [-] Error sending a heartbeat to coordination backend.

2015-05-01 16:41:18.039 19053 TRACE ceilometer.coordination Traceback (most recent call last):

2015-05-01 16:41:18.039 19053 TRACE ceilometer.coordination   File "/usr/lib/python2.7/site-packages/ceilometer/coordination.py", line 105, in heartbeat

2015-05-01 16:41:18.039 19053 TRACE ceilometer.coordination     self._coordinator.heartbeat()

2015-05-01 16:41:18.039 19053 TRACE ceilometer.coordination   File "/usr/lib/python2.7/site-packages/tooz/drivers/redis.py", line 378, in heartbeat

2015-05-01 16:41:18.039 19053 TRACE ceilometer.coordination     value=b"Not dead!")

2015-05-01 16:41:18.039 19053 TRACE ceilometer.coordination   File "/usr/lib64/python2.7/contextlib.py", line 35, in __exit__

2015-05-01 16:41:18.039 19053 TRACE ceilometer.coordination     self.gen.throw(type, value, traceback)

2015-05-01 16:41:18.039 19053 TRACE ceilometer.coordination   File "/usr/lib/python2.7/site-packages/tooz/drivers/redis.py", line 77, in _translate_failures

2015-05-01 16:41:18.039 19053 TRACE ceilometer.coordination     raise coordination.ToozConnectionError(utils.exception_message(e))

2015-05-01 16:41:18.039 19053 TRACE ceilometer.coordination ToozConnectionError: Error 111 connecting to 20.0.0.11:6379. ECONNREFUSED.

2015-05-01 16:41:18.039 19053 TRACE ceilometer.coordination 

2015-05-01 16:41:19.038 19053 ERROR ceilometer.coordination [-] Error connecting to coordination backend.