Switching Modes of DNS Servers

To change the modes of Centralized DNS servers and PleskDNS servers assigned to it, perform these steps:

1. Select a mode for the Centralized DNS server from the corresponding drop-down box:
   • Master. The DNS server acts as a primary (master) DNS server. All zones (direct and reverse ones) are configured as master (primary) ones on this server. The content of these zones will be controlled by DNSC, or DNS Controller. A slave (secondary) server in this case can be either a PleskDNS server or another Centralized DNS server.
   • Slave. The DNS server acts as a secondary (slave) DNS server. All primary zones on this server will be configured to secondary (slave) ones. A master (primary) server in this case can be either a PleskDNS server or another Centralized DNS server.
2. Select a mode for the PleskDNS server/servers assigned to this DNS server:
   • Master mode. The Plesk server acts as a primary DNS server. The Centralized DNS server can be either slave or master one in this case.
   • Hidden master mode. The Plesk server acts as a primary DNS server. However, it is not visible to 'other' servers that need the DNS service. This reduces the load on this server and makes it more safe. The Centralized DNS server can be either slave or master one in this case.
   • Slave mode. The Plesk server acts as a secondary DNS server. The Centralized DNS server can be only a master one in this case.
   • Off mode. The DNS service is turned off on the Plesk server. The Centralized DNS server can be only in a master mode in this case.

     Note: When a Centralized DNS server (or a number of DNS servers) are activated, there is no need to use a Plesk server as a public DNS server.

3. Click OK to save the settings.