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OpenStack Dalmatian : Designate 設定 (Network ノード)2024/10/18

 

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  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    |
|                       |  |   Designate Services  |  |                       |
+-----------------------+  +-----------------------+  +-----------------------+

[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 nginx libnginx-mod-stream
[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: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:5672
root_helper = sudo designate-rootwrap /etc/designate/rootwrap.conf

[database]
# MariaDB 接続情報
connection = mysql+pymysql://designate:password@dlp.srv.world:3306/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:3306/designate

[oslo_policy]
enforce_new_defaults = true

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] 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 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 |
+--------------+--------------+--------------+--------+-------+--------------+
| 4b7b0ec2-    | network.srv. | central      | UP     | -     | -            |
| 6fb1-4615-   | world        |              |        |       |              |
| 9e02-        |              |              |        |       |              |
| a3a49295a89d |              |              |        |       |              |
| ceb9572e-    | network.srv. | api          | UP     | -     | -            |
| 9fb5-471d-   | world        |              |        |       |              |
| abce-        |              |              |        |       |              |
| 46c65d8e9976 |              |              |        |       |              |
| bc47a935-    | network.srv. | mdns         | UP     | -     | -            |
| 24e6-4817-   | world        |              |        |       |              |
| 8116-        |              |              |        |       |              |
| 2d503a7f7fbc |              |              |        |       |              |
| bf49539e-    | network.srv. | worker       | UP     | -     | -            |
| 83e9-4bf5-   | world        |              |        |       |              |
| 8726-        |              |              |        |       |              |
| b516bc5a9108 |              |              |        |       |              |
| d0eabca5-    | network.srv. | producer     | UP     | -     | -            |
| 05c3-41d4-   | world        |              |        |       |              |
| b68b-        |              |              |        |       |              |
| 73d2dc0f483c |              |              |        |       |              |
+--------------+--------------+--------------+--------+-------+--------------+
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