How do I change a nodename in WAS 5.1?

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This is not officially supported, but it worked for me. First go get the “rpl” rpm, then use;

# Script to change the node name of the appgold server to the cloned host name.
# First lets change all the directory names
server=hostname
find /opt/WebSphere/AppServer -type d -name *old_node_name* -print | while read directory
do
   newname=echo $directory | sed 's/old_node_name/'$server'/g'
   mv $directory $newname
done
 
# Now lets change all the file contents using rpl
cd /opt/WebSphere/AppServer
/usr/local/bin/rpl -R old_node_name $server *

**NOTE ** You might have to run this twice to catch all the subdirectories.