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OpenStack Zed : How to use Ceilometer (Cinder)
2022/11/11
 
This is how to use OpenStack Telemetry Service (Ceilometer) for Cinder 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
+-----------+-----------+     +-----------+-----------+     +-----------+-----------+
|   [ dlp.srv.world ]   |     | [ network.srv.world ] |     |  [ node01.srv.world ] |
|     (Control Node)    |     |     (Network Node)    |     |     (Compute Node)    |
|                       |     |                       |     |                       |
|  MariaDB    RabbitMQ  |     |      Open vSwitch     |     |        Libvirt        |
|  Memcached  Nginx     |     |     Neutron Server    |     |      Nova Compute     |
|  Keystone   httpd     |     |      OVN-Northd       |     |      Open vSwitch     |
|  Glance     Nova API  |     |  Nginx  iSCSI Target  |     |   OVN Metadata Agent  |
|  Cinder API           |     |     Cinder Volume     |     |     OVN-Controller    |
|                       |     |     Gnocchi httpd     |     |   Ceilometer Compute  |
|                       |     |   Ceilometer Central  |     |                       |
+-----------------------+     +-----------------------+     +-----------------------+

[1] Change settings for Cinder service to enable Telemetry data collention like follows.
Change on all Nodes Cinder services are running.
[root@dlp ~(keystone)]#
vi /etc/cinder/cinder.conf
# add to the end

[oslo_messaging_notifications]
driver = messagingv2
transport_url = rabbit://openstack:password@dlp.srv.world
[root@dlp ~(keystone)]#
systemctl restart openstack-cinder-api openstack-cinder-scheduler

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

[cent@dlp ~(keystone)]$
openstack metric resource list

+--------------------------------------+----------------------------+----------------------------------
| id                                   | type                       | project_id                       
+--------------------------------------+----------------------------+----------------------------------
| 158685ed-8159-4aad-a294-3227b427f7e1 | instance                   | 28b6e37c787240e4a975d3614821c... 
| 18ab0b6e-fe5c-5578-90ec-2a646869eab1 | instance_network_interface | 28b6e37c787240e4a975d3614821c... 
| 256bfff5-a44e-5dc8-961e-553754909551 | instance_disk              | 28b6e37c787240e4a975d3614821c... 
+--------------------------------------+----------------------------+----------------------------------

# test to create a volume

[cent@dlp ~(keystone)]$
openstack volume create --size 10 disk01

# list resources

[cent@dlp ~(keystone)]$
openstack metric resource list

+--------------------------------------+----------------------------+----------------------------------
| id                                   | type                       | project_id                       
+--------------------------------------+----------------------------+----------------------------------
| 158685ed-8159-4aad-a294-3227b427f7e1 | instance                   | 28b6e37c787240e4a975d3614821c... 
| 18ab0b6e-fe5c-5578-90ec-2a646869eab1 | instance_network_interface | 28b6e37c787240e4a975d3614821c... 
| 256bfff5-a44e-5dc8-961e-553754909551 | instance_disk              | 28b6e37c787240e4a975d3614821c... 
| 23f54c08-08b1-4bd8-b581-8f5cc62bbdf8 | volume                     | 28b6e37c787240e4a975d3614821c... 
+--------------------------------------+----------------------------+----------------------------------

# details of the resource

[cent@dlp ~(keystone)]$
openstack metric resource show 23f54c08-08b1-4bd8-b581-8f5cc62bbdf8

+-----------------------+-------------------------------------------------------------------+
| Field                 | Value                                                             |
+-----------------------+-------------------------------------------------------------------+
| created_by_project_id | 62f531f4d2934e75b8d7f11cd7d53be3                                  |
| created_by_user_id    | 3567bb8bb7594c2189124b7aca36e6d3                                  |
| creator               | 3567bb8bb7594c2189124b7aca36e6d3:62f531f4d2934e75b8d7f11cd7d53be3 |
| ended_at              | None                                                              |
| id                    | 23f54c08-08b1-4bd8-b581-8f5cc62bbdf8                              |
| metrics               | volume.size: e9e32c9d-d6ca-4f5d-9a87-b5594cbcd214                 |
| original_resource_id  | 23f54c08-08b1-4bd8-b581-8f5cc62bbdf8                              |
| project_id            | 28b6e37c787240e4a975d3614821cc71                                  |
| revision_end          | None                                                              |
| revision_start        | 2022-11-11T08:09:53.314428+00:00                                  |
| started_at            | 2022-11-11T08:09:53.314422+00:00                                  |
| type                  | volume                                                            |
| user_id               | 9e8824a151c949ad9105535ead452501                                  |
+-----------------------+-------------------------------------------------------------------+

# display volume size data

[cent@dlp ~(keystone)]$
openstack metric measures show e9e32c9d-d6ca-4f5d-9a87-b5594cbcd214

+---------------------------+-------------+-------+
| timestamp                 | granularity | value |
+---------------------------+-------------+-------+
| 2022-11-11T17:05:00+09:00 |       300.0 |  10.0 |
+---------------------------+-------------+-------+
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