HP Operations Manager for UNIX Administrator’s Reference

Maintaining HPOM
Changing Hostnames and IP Addresses in a Cluster Environment
Changing Hostnames and IP Addresses in a
Cluster Environment
Hostnames work within IP networks to identify a managed node. While a
node may have many IP addresses, the hostname is used to pinpoint a
specific node. The system hostname is the string returned when you use
the UNIX hostname(1) command.
It is not uncommon for a node in a cluster environment to have more
than one IP address. If a node becomes a member of another subnet, you
may need to change its IP addresses. In this case, the IP address or fully
qualified domain name may change.
NOTE
For the HTTPS-based nodes, you can also specify the IP address as
dynamic. You can do this by using the opcnode command line tool.
In general, on HP-UX and Solaris systems, the IP address and the
related hostname are configured in one of the following ways:
❏ /etc/hosts
❏ Domain Name Service (DNS)
❏ Network Information Service (NIS on HP-UX, NIS+ on Solaris)
HPOM also configures the hostname and IP address of the management
server for the managed node in the management server database.
If you are moving from a non-name-server environment to a name-server
environment (that is, DNS or BIND), make sure the name server can
access the new IP address.
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Chapter 12