From Ceilometer logs (the same time when we run this test for the first time:

2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client Traceback (most recent call last):
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client   File "/usr/lib/python2.7/dist-packages/ceilometer/nova_client.py", line 52, in with_logging
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client     return func(*args, **kwargs)
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client   File "/usr/lib/python2.7/dist-packages/ceilometer/nova_client.py", line 157, in instance_get_all_by_host
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client     search_opts=search_opts))
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client   File "/usr/lib/python2.7/dist-packages/novaclient/v2/servers.py", line 749, in list
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client     "servers")
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client   File "/usr/lib/python2.7/dist-packages/novaclient/base.py", line 242, in _list
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client     resp, body = self.api.client.get(url)
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client   File "/usr/lib/python2.7/dist-packages/keystoneauth1/adapter.py", line 173, in get
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client     return self.request(url, 'GET', **kwargs)
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client   File "/usr/lib/python2.7/dist-packages/novaclient/client.py", line 89, in request
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client     **kwargs)
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client   File "/usr/lib/python2.7/dist-packages/keystoneauth1/adapter.py", line 331, in request
2016-07-26 02:49:18.913 23978 ERROR ceilometer.nova_client     resp = super(LegacyJsonAdapter, self).request(*args, **kwargs)
2016-07-26 02:49:18.913 239
<134>Jul 26 02:49:18 node-3 ceilometer-polling: 2016-07-26 02:49:18.914 23978 INFO ceilometer.agent.manager [req-bbb6b56b-7eb9-4720-9eba-8583d6e574d2 admin - - - -] Skip pollster disk.device.read.requests.rate, no resources found this cycle
<134>Jul 26 02:49:18 node-3 ceilometer-polling: 2016-07-26 02:49:18.915 23978 INFO ceilometer.agent.manager [req-bbb6b56b-7eb9-4720-9eba-8583d6e574d2 admin - - - -] Skip pollster disk.device.write.requests.rate, no resources found this cycle
<134>Jul 26 02:49:18 node-3 ceilometer-polling: 2016-07-26 02:49:18.915 23978 INFO ceilometer.agent.manager [req-bbb6b56b-7eb9-4720-9eba-8583d6e574d2 admin - - - -] Skip pollster cpu_util, no resources found this cycle
<134>Jul 26 02:49:18 node-3 ceilometer-polling: 2016-07-26 02:49:18.916 23978 INFO ceilometer.agent.manager [req-bbb6b56b-7eb9-4720-9eba-8583d6e574d2 admin - - - -] Skip pollster disk.read.bytes, no resources found this cycle
<134>Jul 26 02:49:18 node-3 ceilometer-polling: 2016-07-26 02:49:18.916 23978 INFO ceilometer.agent.manager [req-bbb6b56b-7eb9-4720-9eba-8583d6e574d2 admin - - - -] Skip pollster disk.read.requests, no resources found this cycle
<134>Jul 26 02:49:18 node-3 ceilometer-polling: 2016-07-26 02:49:18.917 23978 INFO ceilometer.agent.manager [req-bbb6b56b-7eb9-4720-9eba-8583d6e574d2 admin - - - -] Skip pollster disk.capacity, no resources found this cycle
<134>Jul 26 02:49:18 node-3 ceilometer-polling: 2016-07-26 02:49:18.917 23978 INFO ceilometer.agent.manager [req-bbb6b56b-7eb9-4720-9eba-8583d6e574d2 admin - - - -] Skip pollster disk.device.usage, no resources found this cycle