Ubuntu 22.04
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OpenStack Yoga : Designate 設定 (Network ノード)
2022/05/05
 
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
+-----------+-----------+     +-----------+-----------+     +-----------+-----------+
|   [ dlp.srv.world ]   |     | [ network.srv.world ] |     |  [ node01.srv.world ] |
|     (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 API |     |     Cinder Volume     |     |   OVN Metadata Agent  |
|                       |     |   Designate Services  |     |     OVN-Controller    |
+-----------------------+     +-----------------------+     +-----------------------+

[1] Designate サービス および BIND 9 をインストールします。
root@network:~#
apt -y install designate-api designate-central designate-worker designate-producer designate-mdns python3-designateclient bind9 bind9utils
[2] Designate から BIND が利用できるよう設定しておきます。
root@network:~#
rndc-confgen -a -k designate -c /etc/bind/designate.key

wrote key file "/etc/bind/designate.key"
root@network:~#
chown bind:designate /etc/bind/designate.key

root@network:~#
chmod 640 /etc/bind/designate.key

root@network:~#
mv /etc/bind/named.conf.options /etc/bind/named.conf.options.org

root@network:~#
vi /etc/bind/named.conf.options
# 新規作成

options {
        directory "/var/cache/bind";
        listen-on port 53 { any; };
        listen-on-v6 port 53 { none; };
        # クエリの許可範囲は自身の環境に合わせて置き換え
        allow-query     { localhost; 10.0.0.0/24; };
        allow-new-zones yes;
        request-ixfr no;
        recursion no;
        dnssec-validation auto;
        auth-nxdomain no;
};
include "/etc/bind/designate.key";
controls {
    inet 0.0.0.0 port 953
    allow { localhost; } keys { "designate"; };
};

root@network:~#
chmod 644 /etc/bind/named.conf.options

root@network:~#
chown -R bind. /etc/bind

root@network:~#
systemctl restart bind9

[3] Designate の設定です。
root@network:~#
mv /etc/designate/designate.conf /etc/designate/designate.conf.org

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

[DEFAULT]
log_dir = /var/log/designate
# RabbitMQ 接続情報
transport_url = rabbit://openstack:password@dlp.srv.world
root_helper = sudo designate-rootwrap /etc/designate/rootwrap.conf

[database]
# MariaDB 接続情報
connection = mysql+pymysql://designate:password@dlp.srv.world/designate

[service:api]
listen = 127.0.0.1:9001
auth_strategy = keystone
api_base_uri = https://network.srv.world:9001
enable_api_v2 = True
enabled_extensions_v2 = quotas, reports

# 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 = designate
password = servicepassword
# Apache2 Keystone で自己署名の証明書を使用の場合は [true]
insecure = false

[service:worker]
enabled = True
notify = True

[storage:sqlalchemy]
# MariaDB 接続情報
connection = mysql+pymysql://designate:password@dlp.srv.world/designate

root@network:~#
chmod 640 /etc/designate/designate.conf

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

root@network:~#
su -s /bin/sh -c "designate-manage database sync" designate

root@network:~#
systemctl restart designate-central designate-api

root@network:~#
systemctl enable designate-central designate-api
root@network:~#
vi /etc/designate/pools.yaml
# 新規作成 (ホスト名や IP アドレスは自身の環境に合わせて置き換え)

- name: default
  description: Default Pool
  attributes: {}
  ns_records:
    - hostname: network.srv.world.
      priority: 1
  nameservers:
    - host: 10.0.0.50
      port: 53
  targets:
    - type: bind9
      description: BIND9 Server
      masters:
        - host: 10.0.0.50
          port: 5354
      options:
        host: 10.0.0.50
        port: 53
        rndc_host: 10.0.0.50
        rndc_port: 953
        rndc_key_file: /etc/bind/designate.key

root@network:~#
chmod 640 /etc/designate/pools.yaml

root@network:~#
chgrp designate /etc/designate/pools.yaml

root@network:~#
su -s /bin/sh -c "designate-manage pool update" designate

Updating Pools Configuration
****************************
root@network:~#
systemctl restart designate-worker designate-producer designate-mdns

root@network:~#
systemctl enable designate-worker designate-producer designate-mdns
[4] Nginx にプロキシの設定をします。
root@network:~#
vi /etc/nginx/nginx.conf
# [stream] セクション内に追記

stream {
    upstream neutron-api {
        server 127.0.0.1:9696;
    }
    server {
        listen 10.0.0.50:9696 ssl;
        proxy_pass neutron-api;
    }
    upstream designate-api {
        server 127.0.0.1:9001;
    }
    server {
        listen 10.0.0.50:9001 ssl;
        proxy_pass designate-api;
    }
    ssl_certificate "/etc/letsencrypt/live/network.srv.world/fullchain.pem";
    ssl_certificate_key "/etc/letsencrypt/live/network.srv.world/privkey.pem";
}

root@network:~#
systemctl restart nginx
[5] Openstack に認証可能な任意のノードでステータスを確認します。全て [up] 状態であれば OK です。
root@dlp ~(keystone)#
apt -y install python3-designateclient
root@dlp ~(keystone)#
openstack dns service list

+--------------------------------------+-------------------+--------------+--------+-------+--------------+
| id                                   | hostname          | service_name | status | stats | capabilities |
+--------------------------------------+-------------------+--------------+--------+-------+--------------+
| 9fd3e159-c907-40d1-bfea-ab97cd278059 | network.srv.world | central      | UP     | -     | -            |
| b7c315c1-a42f-4d1b-a52b-ad4c543fa50b | network.srv.world | api          | UP     | -     | -            |
| 430c6ca7-edb2-4c8d-9ffe-0b5723f53bf7 | network.srv.world | mdns         | UP     | -     | -            |
| 80f01065-8fef-458b-994d-6be9a07bb421 | network.srv.world | producer     | UP     | -     | -            |
| a108bb94-fe69-4791-9a7a-17cf14328ff8 | network.srv.world | worker       | UP     | -     | -            |
+--------------------------------------+-------------------+--------------+--------+-------+--------------+
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