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OpenStack Xena : Designate 設定 (Control ノード)
2021/11/24
 
OpenStack DNS Service(Designate)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 Designate をインストールします。
Network ノードに Designate サービス一式をインストールし、バックエンドの DNS サービスとして BIND 9 を設定します。 BIND 9 以外にも PowerDNS などもバックエンド DNS として利用可能です。
------------+---------------------------+---------------------------+------------
            |                           |                           |
        eth0|10.0.0.30              eth0|10.0.0.50              eth0|10.0.0.51
+-----------+-----------+   +-----------+-----------+   +-----------+-----------+
|    [ Control Node ]   |   |    [ Network 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           |   |      iSCSI Target     |   |     OVN-Controller    |
|                       |   |   Designate Services  |   |                       |
+-----------------------+   +-----------------------+   +-----------------------+

[1] Control ノードの Keystone に Designate 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 [designate] ユーザーを作成

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

+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| default_project_id  | 7e53ef14eb894f379ea1929f5defc949 |
| domain_id           | default                          |
| enabled             | True                             |
| id                  | 05391443d065428d81b7c7f0c3f859f1 |
| name                | designate                        |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+

# [designate] ユーザーを [admin] ロール に加える

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

[root@dlp ~(keystone)]#
openstack service create --name designate --description "OpenStack DNS Service" dns

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack DNS Service            |
| enabled     | True                             |
| id          | 72ebcb72c2844db5b5b4a4baa8056d37 |
| name        | designate                        |
| type        | dns                              |
+-------------+----------------------------------+

# Designate API ホストを定義

[root@dlp ~(keystone)]#
export designate_api=10.0.0.50
# [designate] 用エンドポイント作成 (public)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne dns public http://$designate_api:9001/

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | d74cbea85d1f485b88a324006193af8c |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 72ebcb72c2844db5b5b4a4baa8056d37 |
| service_name | designate                        |
| service_type | dns                              |
| url          | http://10.0.0.50:9001/           |
+--------------+----------------------------------+

# [designate] 用エンドポイント作成 (internal)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne dns internal http://$designate_api:9001/

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | ffa5e0075dbc43e78075133697b2fcd2 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 72ebcb72c2844db5b5b4a4baa8056d37 |
| service_name | designate                        |
| service_type | dns                              |
| url          | http://10.0.0.50:9001/           |
+--------------+----------------------------------+

# [designate] 用エンドポイント作成 (admin)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne dns admin http://$designate_api:9001/

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | c618e3b1905d40dd869190dd55d9a5a8 |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 72ebcb72c2844db5b5b4a4baa8056d37 |
| service_name | designate                        |
| service_type | dns                              |
| url          | http://10.0.0.50:9001/           |
+--------------+----------------------------------+
[2] Designate 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 114
Server version: 10.5.9-MariaDB MariaDB Server

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 designate; 
Query OK, 1 row affected (0.00 sec)

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

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

MariaDB [(none)]> flush privileges; 
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> exit 
Bye
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