Configure a DNS server pool

Configure a DNS server pool

Designate supports multiple pools of DNS servers that enable network operators to scale networks as needed, as well as separate internal and external availability zones. Place the DNS server pool file designate_pool.yml) in the OpenStack deploy directory. You can use the [sample](doc/sample_designate_pool.yml) DNS pool file that is stored in this repository and add changes as needed.

The following table provides descritpions of important sections in the configuration file:

Paramater	Example value	Description
name: default	description: Default Pool	Name of the DNS servers pool
ns_records	ns_records: - hostname: ns1-1.example.org. priority: 1	A list of the name server (NS) records for the zones that are hosted within this pool.
nameservers	nameservers: - host: 127.0.0.1 port: 53	A list of all name servers to test against. The servers are used to confirm that the zone changes have been successfully applied.
targets	targets: - type: bind9 description: BIND 9 Server 1 masters: - host: 127.0.0.1 port: 5354 options: host: 127.0.0.1 port: 53 rndc_host: 127.0.0.1 rndc_port: 953 rndc_key_file: /etc/designate/rndc.key	The targets section is where you define the target name server on which you perform actions. For each external DNS server, define the targets section with masters and options sections as needed. Use type bind9 in all configurations because that is the only currently supported option for RPC. The masters section defines the DNS servers that have primary zones. Typically, this is where you put the IP addresses of the infrastructure nodes. Under the options you define IP addresses, ports, and the RNDC information for the external DNS servers.