OpenStack Epoxy : Ceilometer 利用方法 (Glance)2025/05/29

OpenStack Telemetry Service (Ceilometer) の利用方法です。

当例では以下のような環境を例に Ceilometer サービスをインストールしています。

------------+--------------------------+--------------------------+------------
            |                          |                          |
        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]	Image サービスの各種データ収集を有効にするには、Glance を以下のように設定します。

[root@dlp ~(keystone)]#

vi /etc/glance/glance-api.conf

# 最終行へ追記

[oslo_messaging_notifications]
driver = messagingv2
# RabbitMQ 接続情報
transport_url = rabbit://openstack:password@dlp.srv.world

[root@dlp ~(keystone)]#

systemctl restart openstack-glance-api

[2]	イメージを追加等した場合に収集されるデータの表示例です。

# リソース一覧

[root@dlp ~(keystone)]#

openstack metric resource list

+--------------------------------------+----------------------------+----------------------------------
| id                                   | type                       | project_id                       
+--------------------------------------+----------------------------+----------------------------------
| ba6f1ab3-86c9-4966-b1e6-ceabe5353c07 | instance                   | 6cd379304e2447da8514a66bb6cdfda5 
| 8201f251-439c-5a73-b209-e1f6ff43934e | instance_disk              | 6cd379304e2447da8514a66bb6cdfda5 
| 321e0245-bda7-59e5-b7e0-92330c05f2dc | instance_network_interface | 6cd379304e2447da8514a66bb6cdfda5 
+--------------------------------------+----------------------------+----------------------------------

[root@dlp ~(keystone)]#

openstack image list

+--------------------------------------+----------------+--------+
| ID                                   | Name           | Status |
+--------------------------------------+----------------+--------+
| 8bbf2495-d1b0-4c12-89d3-bf6ca71b2a2d | CentOS-Stream9 | active |
+--------------------------------------+----------------+--------+

# テストとしてイメージダウンロード

[root@dlp ~(keystone)]#

openstack image save --file centos9.qcow2 CentOS-Stream9

# テストとしてイメージ登録

[root@dlp ~(keystone)]#

openstack image create "CentOS-9" --file centos9.qcow2 --disk-format qcow2 --container-format bare --public

# リソース一覧

[root@dlp ~(keystone)]#

openstack metric resource list

+--------------------------------------+----------------------------+----------------------------------
| id                                   | type                       | project_id                       
+--------------------------------------+----------------------------+----------------------------------
| ba6f1ab3-86c9-4966-b1e6-ceabe5353c07 | instance                   | 6cd379304e2447da8514a66bb6cdfda5 
| 8201f251-439c-5a73-b209-e1f6ff43934e | instance_disk              | 6cd379304e2447da8514a66bb6cdfda5 
| 321e0245-bda7-59e5-b7e0-92330c05f2dc | instance_network_interface | 6cd379304e2447da8514a66bb6cdfda5 
| 888b7f45-42d8-4434-b0eb-abffe55973a7 | image                      | 8f6f2ea0aec84c6f919d15236063d7c0 
+--------------------------------------+----------------------------+----------------------------------

# [image] リソース詳細

[root@dlp ~(keystone)]#

openstack metric resource show 888b7f45-42d8-4434-b0eb-abffe55973a7

+-----------------------+-------------------------------------------------------------------+
| Field                 | Value                                                             |
+-----------------------+-------------------------------------------------------------------+
| id                    | 888b7f45-42d8-4434-b0eb-abffe55973a7                              |
| creator               | 2d44dedde9e14263bcb7b18d25570be9:03262019a5e54890be53c2fc96ed98d0 |
| started_at            | 2025-05-29T00:58:20.321294+00:00                                  |
| revision_start        | 2025-05-29T00:58:20.321298+00:00                                  |
| ended_at              | None                                                              |
| user_id               | None                                                              |
| project_id            | 8f6f2ea0aec84c6f919d15236063d7c0                                  |
| original_resource_id  | 888b7f45-42d8-4434-b0eb-abffe55973a7                              |
| type                  | image                                                             |
| revision_end          | None                                                              |
| metrics               | image.size: 9f844bd0-df7b-44ee-99bd-132ebbe72c65                  |
| created_by_user_id    | 2d44dedde9e14263bcb7b18d25570be9                                  |
| created_by_project_id | 03262019a5e54890be53c2fc96ed98d0                                  |
+-----------------------+-------------------------------------------------------------------+

# イメージサイズデータ

[root@dlp ~(keystone)]#

openstack metric measures show ec6a0f0e-f183-4dde-b776-bf5110f80738

+---------------------------+-------------+--------------+
| timestamp                 | granularity |        value |
+---------------------------+-------------+--------------+
| 2025-05-29T09:55:00+09:00 |       300.0 | 2759000064.0 |
+---------------------------+-------------+--------------+