12-15-2008
Kumarmani is correct: In solaris 9, it was definitely /etc/nodename. I forgot about that (more than once).
The point is, your host can respond to multiple hostnames just by assigning to one of the existing IPs a new hostname in /etc/hosts. The official name returned by the command "hostname", however, will not change until you change /etc/nodename and reboot.
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LEARN ABOUT SUNOS
nodename
nodename(4) File Formats nodename(4)
NAME
nodename - local source for system name
SYNOPSIS
/etc/nodename
DESCRIPTION
When a machine is standalone or its IP address is configured locally, the /etc/nodename file contains the system name. By convention, the
system name is the same as the hostname associated with the IP address of the primary network interface, for example, hostname.hme0.
If the machine's network configuration is delivered by the RPC bootparams protocol, the /etc/nodename file is not used, as the system name
is delivered by the remote service.
Given a system name value, regardless of source, the uname utility invoked with the -S option is used to set the system name of the running
system.
If the machine's network configuration is delivered by the DHCP protocol, the /etc/nodename file is used only if the DHCP server does not
provide a value for the Hostname option (DHCP standard option code 12).
A system name configured in /etc/nodename should be unique within the system's name service domain in order to ensure that any network ser-
vices provided by the system will operate correctly.
Given a system name value, regardless of source, the uname utility invoked with the -S option is used to set the system name of the running
system.
EXAMPLES
Example 1: Syntax
The syntax for nodename consists of a single line containing the system's name. For example, for a system named myhost:
myhost
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
nis+(1), uname(1), named(1M), ypbind(1M), attributes(5)
NOTES
The nodename file is modified by Solaris installation and de-installation scripts.
SunOS 5.10 9 Feb 2004 nodename(4)