Owner's Manual

Configuring Your Network 17
Configuring a DNS Server
To configure changes on a DNS server for an Oracle 11g R2 cluster using a DNS
(without GNS):
1 Configure SCAN NAME resolution on DNS server.
2 In the DNS, create a name resolution entry for the GNS virtual IP address
in the forward Lookup file.
3 Open the DNS manager.
4 Click the DNS server  Forward Lookup Zones  DNS Domain .
5 Right-click DNS domain and select New Host (A or AAAA) .
6 In the New Host window, enter the name and IP address for GNS virtual
IP address.
7 Click Add Host .
8 Click OK.
9 Add three Virtual IPs / Hosts with the same SCAN name.
10 Click Done on New Host window.
For example:
scancluster Host A 192.0.2.1
scancluster Host A 192.0.2.2
scancluster Host A 192.0.2.3
Where, scancluster is the SCAN NAME provided during grid installation.
NOTE: The SCAN IP address must be routable and must be in public range.
Configuring Host Name Resolution
To configure the changes required on the cluster nodes for name resolution:
1
Add host entries in the %SystemRoot%\system32\drivers\etc\hosts file.
2 On each node, modify lines in the
%SystemRoot%\system32\drivers\etc\hosts file by typing:
127.0.0.1 localhost
<public IP node1> <public hostname node1>
<public IP node2> <public hostname node2>
<virtual IP node1> <virtual hostname node1>
<virtual IP node2> <virtual hostname node2>