用 OpenStack Designate 构建一个 DNS 即服务（DNSaaS）

# yum install openstack-designate-* bind bind-utils -y

MariaDB [(none)]> CREATE DATABASE designate CHARACTER SET utf8 COLLATE utf8_general_ci;
       
MariaDB [(none)]> GRANT ALL PRIVILEGES ON designate.* TO \
'designate'@'localhost' IDENTIFIED BY 'rhlab123';

MariaDB [(none)]> GRANT ALL PRIVILEGES ON designate.* TO 'designate'@'%' \
IDENTIFIED BY 'rhlab123';

rndc-confgen -a -k designate -c /etc/rndc.key -r /dev/urandom

cat <<EOF> etcrndc.conf
include "/etc/rndc.key";
options {
  default-key "designate";
  default-server {{ DNS_SERVER_IP }};
  default-port 953;
};
EOF

include "/etc/rndc.key"; 
controls {
  inet {{ DNS_SERVER_IP }} allow { localhost;{{ CONTROLLER_SERVER_IP }}; } keys { "designate"; };
};

options {
  ...
  allow-new-zones yes;
  request-ixfr no;
  listen-on port 53 { any; };
  recursion no;
  allow-query { 127.0.0.1; {{ CONTROLLER_SERVER_IP }}; };
};

chown named:named /etc/rndc.key
chown named:named /etc/rndc.conf
chmod 600 /etc/rndc.key
chown -v root:named /etc/named.conf
chmod g+w /var/named

# systemctl restart named
# setsebool named_write_master_zones 1

# scp -r /etc/rndc* {{ CONTROLLER_SERVER_IP }}:/etc/

# openstack user create --domain default --password-prompt designate
# openstack role add --project services --user designate admin
# openstack service create --name designate --description "DNS" dns

# openstack endpoint create --region RegionOne dns public http://{{ CONTROLLER_SERVER_IP }}:9001/
# openstack endpoint create --region RegionOne dns internal http://{{ CONTROLLER_SERVER_IP }}:9001/  
# openstack endpoint create --region RegionOne dns admin http://{{ CONTROLLER_SERVER_IP }}:9001/

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

[keystone_authtoken]
auth_type = password
username = designate
password = rhlab123
project_name = service
project_domain_name = Default
user_domain_name = Default
www_authenticate_uri = http://{{ CONTROLLER_SERVER_IP }}:5000/
auth_url = http://{{ CONTROLLER_SERVER_IP }}:5000/

enabled = True
notify = True

[storage:sqlalchemy]
connection = mysql+pymysql://designate:rhlab123@{{ CONTROLLER_SERVER_IP }}/designate

# su -s /bin/sh -c "designate-manage database sync" designate

- name: default
  # The name is immutable. There will be no option to change the name after
  # creation and the only way will to change it will be to delete it
  # (and all zones associated with it) and recreate it.
  description: Default Pool

  attributes: {}

  # List out the NS records for zones hosted within this pool
  # This should be a record that is created outside of designate, that
  # points to the public IP of the controller node.
  ns_records:
    - hostname: {{Controller_FQDN}}. # Thisis mDNS
      priority: 1

  # List out the nameservers for this pool. These are the actual BIND servers.
  # We use these to verify changes have propagated to all nameservers.
  nameservers:
    - host: {{ DNS_SERVER_IP }}
      port: 53

  # List out the targets for this pool. For BIND there will be one
  # entry for each BIND server, as we have to run rndc command on each server
  targets:
    - type: bind9
      description: BIND9 Server 1

      # List out the designate-mdns servers from which BIND servers should
      # request zone transfers (AXFRs) from.
      # This should be the IP of the controller node.
      # If you have multiple controllers you can add multiple masters
      # by running designate-mdns on them, and adding them here.
      masters:
        - host: {{ CONTROLLER_SERVER_IP }}
          port: 5354

      # BIND Configuration options
      options:
        host: {{ DNS_SERVER_IP }}
        port: 53
        rndc_host: {{ DNS_SERVER_IP }}
        rndc_port: 953
        rndc_key_file: /etc/rndc.key
        rndc_config_file: /etc/rndc.conf

su -s /bin/sh -c "designate-manage pool update" designate

systemctl enable --now designate-central designate-api

# openstack dns service list

+--------------+--------+-------+--------------+
| service_name | status | stats | capabilities |
+--------------+--------+-------+--------------+
| central      | UP     | -     | -            |
| api          | UP     | -     | -            |
| mdns         | UP     | -     | -            |
| worker       | UP     | -     | -            |
| producer     | UP     | -     | -            |
+--------------+--------+-------+--------------+

# iptables -I INPUT -p tcp -m multiport --dports 9001 -m comment --comment "designate incoming" -j ACCEPT
       
# iptables -I INPUT -p tcp -m multiport --dports 5354 -m comment --comment "Designate mdns incoming" -j ACCEPT
       
# iptables -I INPUT -p tcp -m multiport --dports 53 -m comment --comment "bind incoming" -j ACCEPT
        
# iptables -I INPUT -p udp -m multiport --dports 53 -m comment --comment "bind/powerdns incoming" -j ACCEPT
       
# iptables -I INPUT -p tcp -m multiport --dports 953 -m comment --comment "rndc incoming - bind only" -j ACCEPT
       
# service iptables save; service iptables restart
# setsebool named_write_master_zones 1

external_dns_driver = designate

[designate]
url = http://{{ CONTROLLER_SERVER_IP }}:9001/v2 ## This end point of designate
auth_type = password
auth_url = http://{{ CONTROLLER_SERVER_IP }}:5000
username = designate
password = rhlab123
project_name = services
project_domain_name = Default
user_domain_name = Default
allow_reverse_dns_lookup = True
ipv4_ptr_zone_prefix_size = 24
ipv6_ptr_zone_prefix_size = 116

dns_domain = rhlab.dev.

# systemctl restart neutron-*

extension_drivers=port_security,qos,dns

# openstack zone create –email=admin@rhlab.dev rhlab.dev.

# openstack recordset create --record '192.168.1.230' --type A rhlab.dev. Test