I left the instance running for more than 1 hour and now when I check the logs of "ceilometer-polling" I can see the following messages:
DEBUG ceilometer.compute.pollsters [-] 3ef0373a-558c-4818-b693-7536ee70d283/network.outgoing.bytes volume: 3608 _stats_to_sample /opt/stack/ceilometer/ceilometer/compute/pollsters/__init__.py:108DEBUG ceilometer.compute.pollsters [-] 3ef0373a-558c-4818-b693-7536ee70d283/network.outgoing.packets volume: 25 _stats_to_sample /opt/stack/ceilometer/ceilometer/compute/pollsters/__init__.py:108DEBUG ceilometer.compute.pollsters [-] 3ef0373a-558c-4818-b693-7536ee70d283/disk.device.write.requests volume: 4568 _stats_to_sample /opt/stack/ceilometer/ceilometer/compute/pollsters/__init__.py:108
So I guess that Ceilometer is starting to poll some statistics.
The "gnocchi resource list" also now gives the following output:ID Type3ef0373a-558c-4818-b693-7536ee70d283 | instance
However, the "gnocchi metric list" is still empty.
Looking in the logs of "ceilometer-agent-notification", I found the following error:ERROR ceilometer.pipeline.sample [-] Pipeline meter_sink: Continue after error from publisher <ceilometer.publisher.gnocchi.GnocchiPublisher object at 0x7fc9800f9ee0>: gnocchiclient.exceptions.Conflict: <html>
<head>
<title>409 Conflict</title>
</head>
<body>
<h1>409 Conflict</h1>
There was a conflict when trying to complete your request.<br /><br />
Archive policy ceilometer-low already exists
</body>
</html> (HTTP 409)
Do you know how to resolve this?
Thanks.