Given a non-global zone in SmartOS that we want to change the hostname of, we need to make sure to edit the following files to change it:

• /etc/hosts
• /etc/nodename

A quick way to do that is with sed (renaming “fred” to “beth” here):

sed -e 's/fred/beth/g' -i /etc/hosts /etc/nodename

Then shutdown & start the zone (from my testing a restart doesn’t apply it).