chenxing 47eeacdc7b Upgrade the rst convention of the Reference Guide [1]

We upgrade the rst convention by following Documentation Contributor
Guide[1].

[1] https://docs.openstack.org/doc-contrib-guide

Change-Id: I10660e2df0e57be0800e26aa4d320074084c3acf
Partially-Implements: blueprint optimize-the-documentation-format

2018-01-31 19:56:33 +08:00

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Designate in Kolla

Overview

Designate provides DNSaaS services for OpenStack:

REST API for domain/record management
Multi-tenant
Integrated with Keystone for authentication
Framework in place to integrate with Nova and Neutron notifications (for auto-generated records)
Support for PowerDNS and Bind9 out of the box

Configuration on Kolla deployment

Enable Designate service in /etc/kolla/globals.yml

enable_designate: "yes"

Configure Designate options in /etc/kolla/globals.yml

Important

Designate MDNS node requires the dns_interface to be reachable from public network.

dns_interface: "eth1"
designate_backend: "bind9"
designate_ns_record: "sample.openstack.org"

Neutron and Nova Integration

Create default Designate Zone for Neutron:

openstack zone create --email admin@sample.openstack.org sample.openstack.org.

Create designate-sink custom configuration folder:

mkdir -p /etc/kolla/config/designate/

Append Designate Zone ID in /etc/kolla/config/designate/designate-sink.conf

[handler:nova_fixed]
zone_id = <ZONE_ID>
[handler:neutron_floatingip]
zone_id = <ZONE_ID>

Reconfigure Designate:

kolla-ansible reconfigure -i <INVENTORY_FILE> --tags designate

Verify operation

List available networks:

openstack network list

Associate a domain to a network:

neutron net-update <NETWORK_ID> --dns_domain sample.openstack.org.

Start an instance:

openstack server create \
  --image cirros \
  --flavor m1.tiny \
  --key-name mykey \
  --nic net-id=${NETWORK_ID} \
  my-vm

Check DNS records in Designate:

openstack recordset list sample.openstack.org.

+--------------------------------------+---------------------------------------+------+---------------------------------------------+--------+--------+
| id                                   | name                                  | type | records                                     | status | action |
+--------------------------------------+---------------------------------------+------+---------------------------------------------+--------+--------+
| 5aec6f5b-2121-4a2e-90d7-9e4509f79506 | sample.openstack.org.                 | SOA  | sample.openstack.org.                       | ACTIVE | NONE   |
|                                      |                                       |      | admin.sample.openstack.org. 1485266928 3514 |        |        |
|                                      |                                       |      | 600 86400 3600                              |        |        |
| 578dc94a-df74-4086-a352-a3b2db9233ae | sample.openstack.org.                 | NS   | sample.openstack.org.                       | ACTIVE | NONE   |
| de9ff01e-e9ef-4a0f-88ed-6ec5ecabd315 | 192-168-190-232.sample.openstack.org. | A    | 192.168.190.232                             | ACTIVE | NONE   |
| f67645ee-829c-4154-a988-75341050a8d6 | my-vm.None.sample.openstack.org.      | A    | 192.168.190.232                             | ACTIVE | NONE   |
| e5623d73-4f9f-4b54-9045-b148e0c3342d | my-vm.sample.openstack.org.           | A    | 192.168.190.232                             | ACTIVE | NONE   |
+--------------------------------------+---------------------------------------+------+---------------------------------------------+--------+--------+

Query instance DNS information to Designate dns_interface IP address:

dig +short -p 5354 @<DNS_INTERFACE_IP> my-vm.sample.openstack.org. A
192.168.190.232

For more information about how Designate works, see Designate, a DNSaaS component for OpenStack.

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