CentOS 7
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OpenStack Rocky : How to use Ceilometer (Glance)
2018/09/06
 
This is how to use OpenStack Telemetry Service (Ceilometer) for Glance service.
This example is based on the emvironment 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     |   |        L2 Agent       |   |     Nova Compute      |
|  Keystone   Glance    |   |        L3 Agent       |   |      Open vSwitch     |
|  Nova API  Cinder API |   |     Metadata Agent    |   |        L2 Agent       |
|  Neutron Server       |   |     Cinder Volume     |   |  Ceilometer Compute   |
|  Metadata Agent       |   |        Heat API       |   |                       |
|  Gnocchi              |   |      Heat Engine      |   |                       |
|  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)]#
vi /etc/glance/glance-registry.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 openstack-glance-api openstack-glance-registry

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

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

+--------------------------------------+----------------------------+----------------------------------
| id                                   | type                       | project_id                       
+--------------------------------------+----------------------------+----------------------------------
| 45d4a9ba-d6ec-4263-a81c-487702f98e33 | instance                   | 3c9dc9d8d71149a7b835e1f5813d2... 
| bbdaa383-5531-57a5-b411-e991064fa095 | instance_network_interface | 3c9dc9d8d71149a7b835e1f5813d2...
| f909ac06-3daa-566e-93d4-10141ad2ce8a | instance_disk              | 3c9dc9d8d71149a7b835e1f5813d2...
| 5b30f928-8834-4ab5-a5ce-760c48d4c9b7 | instance                   | 3c9dc9d8d71149a7b835e1f5813d2...
+--------------------------------------+----------------------------+----------------------------------


# test to add an image

[root@dlp ~(keystone)]#
openstack image create "CentOS75" --file centos75.qcow2 --disk-format qcow2 --container-format bare --public

# test to download an image

[root@dlp ~(keystone)]#
openstack image save --file centos7.qcow2 CentOS75

# list resources

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

+--------------------------------------+----------------------------+----------------------------------
| id                                   | type                       | project_id                       
+--------------------------------------+----------------------------+----------------------------------
| 45d4a9ba-d6ec-4263-a81c-487702f98e33 | instance                   | 3c9dc9d8d71149a7b835e1f5813d2... 
| bbdaa383-5531-57a5-b411-e991064fa095 | instance_network_interface | 3c9dc9d8d71149a7b835e1f5813d2... 
| f909ac06-3daa-566e-93d4-10141ad2ce8a | instance_disk              | 3c9dc9d8d71149a7b835e1f5813d2... 
| 5b30f928-8834-4ab5-a5ce-760c48d4c9b7 | instance                   | 3c9dc9d8d71149a7b835e1f5813d2... 
| e89a7a4a-8cad-4ecd-8535-183ef77b1500 | image                      | 2cb4b9d73bcc46449f711794506c3... 
+--------------------------------------+----------------------------+----------------------------------

# details of the resource

[root@dlp ~(keystone)]#
openstack metric resource show e89a7a4a-8cad-4ecd-8535-183ef77b1500

+-----------------------+-------------------------------------------------------------------+
| Field                 | Value                                                             |
+-----------------------+-------------------------------------------------------------------+
| created_by_project_id | ece4ac6c7e764a979e36ba0b2faf848e                                  |
| created_by_user_id    | cfc889992c144012a0092b270bfa0fbd                                  |
| creator               | cfc889992c144012a0092b270bfa0fbd:ece4ac6c7e764a979e36ba0b2faf848e |
| ended_at              | None                                                              |
| id                    | e89a7a4a-8cad-4ecd-8535-183ef77b1500                              |
| metrics               | image.download: 117d25f0-319b-4ec0-982f-7b6490a7272b              |
|                       | image.serve: 9be14791-f7ad-4628-a2ca-1c080617bdd8                 |
|                       | image.size: 7da39de2-5693-4a99-8a50-ad3dfa105b98                  |
| original_resource_id  | e89a7a4a-8cad-4ecd-8535-183ef77b1500                              |
| project_id            | 2cb4b9d73bcc46449f711794506c3faf                                  |
| revision_end          | None                                                              |
| revision_start        | 2018-09-06T05:54:22.435737+00:00                                  |
| started_at            | 2018-09-06T05:54:22.435693+00:00                                  |
| type                  | image                                                             |
| user_id               | None                                                              |
+-----------------------+-------------------------------------------------------------------+

# display image download

[root@dlp ~(keystone)]#
openstack metric measures show 117d25f0-319b-4ec0-982f-7b6490a7272b

+---------------------------+-------------+--------------+
| timestamp                 | granularity |        value |
+---------------------------+-------------+--------------+
| 2018-09-06T14:50:00+09:00 |       300.0 | 1421869056.0 |
+---------------------------+-------------+--------------+

# display image size

[root@dlp ~(keystone)]#
openstack metric measures show 7da39de2-5693-4a99-8a50-ad3dfa105b98

+---------------------------+-------------+--------------+
| timestamp                 | granularity |        value |
+---------------------------+-------------+--------------+
| 2018-09-06T14:50:00+09:00 |       300.0 | 1421869056.0 |
+---------------------------+-------------+--------------+
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