Ubuntu 18.04
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OpenStack Queens : Designate 設定#2
2018/06/20
 
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  |   |      Linux Bridge     |   |        Libvirt        |
|  Memcached  httpd     |   |   L2_Agent L3_Agent   |   |     Nova_Compute      |
|  Keystone   Glance    |   |     Metadata_Agent    |   |      Linux Bridge     |
|  Nova_API  Cinder_API |   |     Cinder_Volume     |   |        L2_Agent       |
|  Neutron_Server       |   |        Heat_API       |   |                       |
|  Metadata_Agent       |   |      Heat Engine      |   |                       |
|                       |   |   Designate_Services  |   |                       |
|                       |   |   named               |   |                       |
+-----------------------+   +-----------------------+   +-----------------------+

[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 python-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 -r /dev/urandom

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:~#
chgrp bind /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@10.0.0.30
root_helper = sudo designate-rootwrap /etc/designate/rootwrap.conf

[database]
# MariaDB 接続情報
connection = mysql+pymysql://designate:password@10.0.0.30/designate

[service:api]
listen = 0.0.0.0:9001
auth_strategy = keystone
api_base_uri = http://10.0.0.50:9001
enable_api_v2 = True
enabled_extensions_v2 = quotas, reports

# Keystone 認証情報
[keystone_authtoken]
www_authenticate_uri = http://10.0.0.30:5000
auth_url = http://10.0.0.30:5000
memcached_servers = 10.0.0.30:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = designate
password = servicepassword

[service:worker]
enabled = True
notify = True

[storage:sqlalchemy]
# MariaDB 接続情報
connection = mysql+pymysql://designate:password@10.0.0.30/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] 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)#
openstack dns service list

+--------------------------------------+-------------------+--------------+--------+-------+--------------+
| id                                   | hostname          | service_name | status | stats | capabilities |
+--------------------------------------+-------------------+--------------+--------+-------+--------------+
| 5cd97ca8-c908-4ff2-8983-0195557d1c63 | network.srv.world | central      | UP     | -     | -            |
| 9a8fc24d-8e21-4d4b-a9ad-0a8e97b51740 | network.srv.world | api          | UP     | -     | -            |
| c05614da-13d0-41c9-8187-34306b778f09 | network.srv.world | worker       | UP     | -     | -            |
| dd04ae57-730a-4e21-9f24-ff766f471404 | network.srv.world | producer     | UP     | -     | -            |
| 8e13cf71-c848-41dc-8977-4f0e5b9ef11d | network.srv.world | mdns         | UP     | -     | -            |
+--------------------------------------+-------------------+--------------+--------+-------+--------------+
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