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OpenStack Xena : How to use Ceilometer (Glance)2021/10/11

 
This is how to use OpenStack Telemetry Service (Ceilometer) for Glance service.
This example is based on the environment like follows.
------------+---------------------------+---------------------------+------------
            |                           |                           |
        eth0|10.0.0.30              eth0|10.0.0.50              eth0|10.0.0.51
+-----------+-----------+   +-----------+-----------+   +-----------+-----------+
|    [ Control Node ]   |   |    [ Storage Node ]   |   |    [ Compute Node ]   |
|                       |   |                       |   |                       |
|  MariaDB    RabbitMQ  |   |      Open vSwitch     |   |        Libvirt        |
|  Memcached  httpd     |   |     Neutron Server    |   |     Nova Compute      |
|  Keystone   Glance    |   |       OVN-Northd      |   |      Open vSwitch     |
|  Nova API             |   |     Cinder Volume     |   |   OVN Metadata Agent  |
|  Cinder API           |   |    Heat API/Engine    |   |     OVN-Controller    |
|                       |   |    Gnocchi   httpd    |   |   Ceilometer Compute  |
|                       |   |   Ceilometer Central  |   |                       |
+-----------------------+   +-----------------------+   +-----------------------+

[1] Change settings for Glance service to enable Telemetry data collention like follows.
root@dlp ~(keystone)#
vi /etc/glance/glance-api.conf
# add to the end

[oslo_messaging_notifications]
driver = messagingv2
# RabbitMQ connection info
transport_url = rabbit://openstack:password@10.0.0.30
root@dlp ~(keystone)#
systemctl restart glance-api

[2] It's some example to display metrics and meters.
# display resources

root@dlp ~(keystone)#
openstack metric resource list

+--------------------------------------+----------------------------+----------------------------------
| id                                   | type                       | project_id                       
+--------------------------------------+----------------------------+----------------------------------
| 4699d575-1d94-4024-8323-9dfa3599c8d2 | instance                   | facc545a7f9e4218884c40169158a... 
| 75d568e7-b47a-54a2-911e-5c189f4c75c8 | instance_disk              | facc545a7f9e4218884c40169158a... 
| 2d65a40a-ec43-58ad-bfd9-c5b4df1059ae | instance_network_interface | facc545a7f9e4218884c40169158a... 
+--------------------------------------+----------------------------+----------------------------------

root@dlp ~(keystone)#
openstack image list

+--------------------------------------+------------+--------+
| ID                                   | Name       | Status |
+--------------------------------------+------------+--------+
| ba8781c7-85ef-4872-957e-2c27b55275b2 | Ubuntu2004 | active |
+--------------------------------------+------------+--------+

# test to download an image

root@dlp ~(keystone)#
openstack image save --file ubuntu2004.qcow2 Ubuntu2004

# test to add an image

root@dlp ~(keystone)#
openstack image create "Ubuntu200402" --file ubuntu2004.qcow2 --disk-format qcow2 --container-format bare --public

# list resources

root@dlp ~(keystone)#
openstack metric resource list

+--------------------------------------+----------------------------+----------------------------------
| id                                   | type                       | project_id                       
+--------------------------------------+----------------------------+----------------------------------
| 4699d575-1d94-4024-8323-9dfa3599c8d2 | instance                   | facc545a7f9e4218884c40169158a... 
| 75d568e7-b47a-54a2-911e-5c189f4c75c8 | instance_disk              | facc545a7f9e4218884c40169158a... 
| 2d65a40a-ec43-58ad-bfd9-c5b4df1059ae | instance_network_interface | facc545a7f9e4218884c40169158a... 
| ee2c20a8-f5cd-4844-bfa5-579689a04d38 | image                      | f4431102f2d9415590e3ac11c6168... 
+--------------------------------------+----------------------------+----------------------------------

# details of the [image] resource

root@dlp ~(keystone)#
openstack metric resource show ee2c20a8-f5cd-4844-bfa5-579689a04d38

+-----------------------+-------------------------------------------------------------------+
| Field                 | Value                                                             |
+-----------------------+-------------------------------------------------------------------+
| created_by_project_id | 611e3ba8938b475fb9dd8124603f18d3                                  |
| created_by_user_id    | 6f2ebeebee50478588d34251b7770183                                  |
| creator               | 6f2ebeebee50478588d34251b7770183:611e3ba8938b475fb9dd8124603f18d3 |
| ended_at              | None                                                              |
| id                    | ee2c20a8-f5cd-4844-bfa5-579689a04d38                              |
| metrics               | image.size: 78b25c75-3c0e-47be-b018-34ca488d5e6f                  |
| original_resource_id  | ee2c20a8-f5cd-4844-bfa5-579689a04d38                              |
| project_id            | f4431102f2d9415590e3ac11c616858a                                  |
| revision_end          | None                                                              |
| revision_start        | 2021-10-11T05:31:50.821491+00:00                                  |
| started_at            | 2021-10-11T05:31:50.821484+00:00                                  |
| type                  | image                                                             |
| user_id               | None                                                              |
+-----------------------+-------------------------------------------------------------------+

# display image size data

root@dlp ~(keystone)#
openstack metric measures show 78b25c75-3c0e-47be-b018-34ca488d5e6f

+---------------------------+-------------+-------------+
| timestamp                 | granularity |       value |
+---------------------------+-------------+-------------+
| 2021-10-11T14:30:00+09:00 |       300.0 | 567803904.0 |
+---------------------------+-------------+-------------+
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