Ubuntu 22.04
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OpenStack Caracal : Gnocchi 設定2024/04/11
 
時系列データベース [TDBaaS (Time Series Database as a Service)] Gnocchi をインストールします。
当例では以下のような環境を例に Network ノードに Gnocchi をインストールします。 
------------+--------------------------+--------------------------+------------
            |                          |                          |
        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  |  |  Neutron L2/L3 Agent  |  |        Libvirt        |
|  Memcached  Nginx     |  |   Neutron Metadata    |  |      Nova Compute     |
|  Keystone   httpd     |  |     Open vSwitch      |  |    Neutron L2 Agent   |
|  Glance     Nova API  |  |     iSCSI Target      |  |      Open vSwitch     |
|  Neutron Server       |  |     Cinder Volume     |  |                       |
|  Neutron Metadata     |  |     httpd  Gnocchi    |  |                       |
|  Cinder API           |  |                       |  |                       |
+-----------------------+  +-----------------------+  +-----------------------+
[1] Control ノードの Keystone に Gnocchi 用のユーザー等々を登録しておきます。
# [service] プロジェクト所属で [gnocchi] ユーザーを作成

root@dlp ~(keystone)#
openstack user create --domain default --project service --password servicepassword gnocchi 

+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| default_project_id  | 04b6d7802d9043cbb09ceb31fd68987b |
| domain_id           | default                          |
| enabled             | True                             |
| id                  | a0d0f678faed405b8cb49be8e43022d8 |
| name                | gnocchi                          |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+
# [gnocchi] ユーザーを [admin] ロール に加える

root@dlp ~(keystone)#
openstack role add --project service --user gnocchi admin
# [gnocchi] 用サービスエントリ作成

root@dlp ~(keystone)#
openstack service create --name gnocchi --description "Metric Service" metric 

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | Metric Service                   |
| enabled     | True                             |
| id          | 659543ba386f462aa06870fe822e508f |
| name        | gnocchi                          |
| type        | metric                           |
+-------------+----------------------------------+
# Gnocchi API ホストを定義

root@dlp ~(keystone)#
export controller=network.srv.world
# [gnocchi] 用エンドポイント作成 (public)

root@dlp ~(keystone)#
openstack endpoint create --region RegionOne metric public https://$controller:8041 

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | aecd45091def4943a6c236828c134283 |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 659543ba386f462aa06870fe822e508f |
| service_name | gnocchi                          |
| service_type | metric                           |
| url          | https://network.srv.world:8041   |
+--------------+----------------------------------+
# [gnocchi] 用エンドポイント作成 (internal)

root@dlp ~(keystone)#
openstack endpoint create --region RegionOne metric internal https://$controller:8041 

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | d619a65851c444c2821df680686a4680 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 659543ba386f462aa06870fe822e508f |
| service_name | gnocchi                          |
| service_type | metric                           |
| url          | https://network.srv.world:8041   |
+--------------+----------------------------------+
# [gnocchi] 用エンドポイント作成 (admin)

root@dlp ~(keystone)#
openstack endpoint create --region RegionOne metric admin https://$controller:8041 

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 957e75f0afcb4c96b4988f418c22d09f |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 659543ba386f462aa06870fe822e508f |
| service_name | gnocchi                          |
| service_type | metric                           |
| url          | https://network.srv.world:8041   |
+--------------+----------------------------------+
[2] Gnocchi 用のユーザーとデータベースを MariaDB に作成しておきます。
root@dlp ~(keystone)#
mysql 

Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 105
Server version: 10.6.16-MariaDB-0ubuntu0.22.04.1 Ubuntu 22.04

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> create database gnocchi; 
Query OK, 1 row affected (0.00 sec)

MariaDB [(none)]> grant all privileges on gnocchi.* to gnocchi@'localhost' identified by 'password'; 
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> grant all privileges on gnocchi.* to gnocchi@'%' identified by 'password'; 
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> exit 
Bye
[3] Network ノードで Gnocchi サービスをインストールします。インストール中の問いには全て [No] で OK です。
root@network:~#
apt -y install gnocchi-api gnocchi-metricd python3-gnocchiclient apache2 libapache2-mod-wsgi-py3 nginx libnginx-mod-stream
[4] Gnocchi の基本設定です。
root@network:~#
mv /etc/gnocchi/gnocchi.conf /etc/gnocchi/gnocchi.conf.org

root@network:~#
vi /etc/gnocchi/gnocchi.conf
# 新規作成

[DEFAULT]
log_dir = /var/log/gnocchi

[api]
auth_mode = keystone

[database]
backend = sqlalchemy

# MariaDB 接続情報
[indexer]
url = mysql+pymysql://gnocchi:password@dlp.srv.world:3306/gnocchi

[storage]
driver = file
file_basepath = /var/lib/gnocchi

# Keystone 認証情報
[keystone_authtoken]
www_authenticate_uri = https://dlp.srv.world:5000
auth_url = https://dlp.srv.world:5000
memcached_servers = dlp.srv.world:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = gnocchi
password = servicepassword
service_token_roles_required = true
# Apache2 Keystone で自己署名の証明書を使用の場合は [true]
insecure = false

[oslo_policy]
enforce_new_defaults = false
root@network:~#
vi /etc/apache2/sites-available/gnocchi-api.conf
# 1行目 : 変更

Listen
127.0.0.1:8041
root@network:~#
vi /etc/gnocchi/policy.json
# ポリシーを追記

{
    "admin_or_creator": "role:admin or user:%(creator)s or project_id:%(created_by_project_id)s",
    "resource_owner": "project_id:%(project_id)s",
    "metric_owner": "project_id:%(resource.project_id)s",

    "get status": "role:admin",

    "create resource": "",
    "get resource": "rule:admin_or_creator or rule:resource_owner",
    "update resource": "rule:admin_or_creator",
    "delete resource": "rule:admin_or_creator",
    "delete resources": "rule:admin_or_creator",
    "list resource": "rule:admin_or_creator or rule:resource_owner",
    "search resource": "rule:admin_or_creator or rule:resource_owner",

    "create resource type": "role:admin",
    "delete resource type": "role:admin",
    "update resource type": "role:admin",
    "list resource type": "",
    "get resource type": "",

    "get archive policy": "",
    "list archive policy": "",
    "create archive policy": "role:admin",
    "update archive policy": "role:admin",
    "delete archive policy": "role:admin",

    "create archive policy rule": "role:admin",
    "get archive policy rule": "",
    "list archive policy rule": "",
    "update archive policy rule": "role:admin",
    "delete archive policy rule": "role:admin",

    "create metric": "",
    "delete metric": "rule:admin_or_creator",
    "get metric": "rule:admin_or_creator or rule:metric_owner",
    "search metric": "rule:admin_or_creator or rule:metric_owner",
    "list metric": "rule:admin_or_creator or rule:metric_owner",

    "get measures":  "rule:admin_or_creator or rule:metric_owner",
    "post measures":  "rule:admin_or_creator"
}
root@network:~#
chmod 640 /etc/gnocchi/gnocchi.conf

root@network:~#
chgrp gnocchi /etc/gnocchi/gnocchi.conf

[5] ネットワークノード用の SSL/TLS 証明書を取得 または 自己署名の証明書を作成して、Nginx にプロキシの設定をします。
root@network:~#
unlink /etc/nginx/sites-enabled/default

root@network:~#
vi /etc/nginx/nginx.conf
# 最終行に追記

stream {
    upstream gnocchi-api {
        server 127.0.0.1:8041;
    }
    server {
        listen 10.0.0.50:8041 ssl;
        proxy_pass gnocchi-api;
    }
    ssl_certificate "/etc/letsencrypt/live/network.srv.world/fullchain.pem";
    ssl_certificate_key "/etc/letsencrypt/live/network.srv.world/privkey.pem";
}
[6] データベースにデータを追加して Gnocchi サービスを起動します。
root@network:~#
su -s /bin/bash gnocchi -c "gnocchi-upgrade"

root@network:~#
a2enmod wsgi

root@network:~#
a2ensite gnocchi-api

root@network:~#
systemctl restart gnocchi-metricd apache2 nginx

root@network:~#
systemctl enable gnocchi-metricd

[7] Control ノードで動作確認します。
root@dlp ~(keystone)#
apt -y install python3-gnocchiclient

root@dlp ~(keystone)#
export OS_AUTH_TYPE=password

root@dlp ~(keystone)#
gnocchi resource list
# 何も表示されなければ問題なし
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