Reference: DNS Deployment Roles - BlueCat Address Manager - 8.2.0

Address Manager Administration Guide
prodname
BlueCat Address Manager
version_custom
8.2.0

The following describes the DNS deployment roles that can be configured in Address Manager.

The following DNS server roles are available:
DNS Role Description
Master Deploys files and settings to create a DNS master server.
Hidden Master Deploys files and settings to create a DNS master, but without name server and glue records, thus hiding the server from DNS queries.
Slave Deploys files and settings to create a DNS slave server.
Stealth Slave Deploys files and settings to create a DNS slave, but without name server and glue records, thus hiding the server from DNS queries.
Forwarder Deploys a forwarding zone in BIND, or conditional forwarding in Microsoft DNS, to forward queries for a specific zone to one or more DNS servers. Forwarding requires that recursion be enabled; recursion is automatically enabled when you select the Forwarder role. Use this role with external servers. For instructions on how to create an external server, refer to Adding Other DNS Servers.
Stub A stub zone deploys a zone that contains only name server records used to identify the authoritative DNS servers for that zone. DNS lookups to a stub zone will return the name server and corresponding host records, which will then result in a separate query to the name servers for the host in question.

Stub zones are similar to secondary zones, where it gathers the record data from a designated server. However, stub zones are different from secondary zones in two ways:

  • Stub zones only contain the records needed to identify the master server; namely the SOA and NS records for the zone, along with the A records for each NS record.
  • Stub zones do not obtain their records using zone transfers. Instead, it issues queries against its configured authoritative servers to obtain the appropriate records.
Because of these differences, Address Manager treats Stub zones differently than Slave zones. Stub zones can be configured to use multiple servers to pull data from. Address Manager will automatically add all query-able servers; any server with a Master or Slave role (but not Hidden Master or Stealth Slave), to the Stub zone. Address Manager will configure the stub server in the following order:
  • Any listed Master server is added as the first server.
  • Slave servers are added in IP order from lowest to highest.
Note that this provides redundancy support that is not available for Slave servers.

Use stub zones to resolve names between separate DNS namespaces. For example, you might use this type of zone to resolve names for clients in separate namespaces after a corporate merger. In Address Manager, this zone type is often used with external servers, where the external server represents the authoritative master. For instructions on how to create an external server, refer to Adding Other DNS Servers.
Recursion Used when creating a caching-only DNS server that accepts recursive queries, but does not host any zones. This role is available only at the view level. To use this role, you must also set Allow Query and Allow Query Cache DNS Deployment Options at the view level.
AD Integrated Master Deploys an Active Directory Integrated Master zone to a Windows DNS server. This option is for use with Windows DNS servers only.
None Clears all data from the server to which it is applied.