Host Name change

1. To list the current hostname (i.e. config/nodename property) :

# svccfg -s system/identity:node listprop config
config                       application
config/enable_mapping       boolean     true
config/ignore_dhcp_hostname boolean     false
config/loopback             astring
config/nodename             astring     geeklab

2. Change the hostname to geekserver by setting the property config/nodename to geekserver

# svccfg -s system/identity:node setprop config/nodename="geekserver"

3. Refresh and restart the system/identity:node service for the changes to take effect.

# svcadm refresh system/identity:node

# svcadm restart system/identity:node

4. Verify the changes

# svccfg -s system/identity:node listprop config
config                       application
config/enable_mapping       boolean     true
config/ignore_dhcp_hostname boolean     false
config/nodename             astring     geekserver
config/loopback             astring     geekserver

# hostname
geekserver

Check  hostname 

# cat /etc/hosts
#
# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
# Internet host table
#
::1             localhost
127.0.0.1       localhost    loghost
192.168.1.20    geekserver