Owner's Manual

16 Configuring Your Network
Configuring a DNS Client
To configure the changes required on the cluster nodes for name resolution:
1
Add host entries in the /etc/hosts file. On each node, modify lines in the
/etc/hosts file by typing:
127.0.0.1 localhost.localdomain localhost
<public IP node1> <fully qualified hostname
node1> <public hostname node1>
<public IP node2> <fully qualified hostname
node2> <public hostname node2>
<Virtual IP node1> <fully qualified Virtual
hostname node1> <Virtual hostname node1>
<Virtual IP node2> <fully qualified Virtual
hostname node2> <Virtual hostname node2>
2
You must configure the resolv.conf on the nodes in the cluster to contain
name server entries that are resolvable to DNS server. Provide an entry
similar to the following:
/etc/resolv.conf:
search ns1.domainserver.com
nameserver 192.0.2.100
Where 192.0.2.100 is a valid DNS server address in your network and
ns1.domainserver.com is the domain server in your network.
3 Verify the order configuration. /etc/nsswitch.conf controls the name
service order. In some configurations, the NIS can cause issues with Oracle
SCAN address resolution. It is recommended that you place the NIS entry
at the end of the search list. For example,
hosts: files dns nis
Enabling IPMI
Intelligent Platform Management Interface (IPMI) provides a set of common
interfaces to the hardware and firmware that system administrators can use to
monitor system health and manage the system. With Oracle 11g R2, Oracle
Clusterware can integrate IPMI to provide failure isolation support and to
ensure cluster integrity.
Lnx_Stnwt.book Page 16 Wednesday, August 4, 2010 11:58 AM