ssh into your Controller (NOT the USG!).
For controller on:
NOTE: Use the site-name you had configured instead of “default” if you did.
Create/Edit the file config.gateway.json in your site directory:
{ "system": { "static-host-mapping": { "host-name": { "test1.localdomain": { "alias": [ "test1" ], "inet": [ "192.168.99.99" ] } } } } }
NOTE: It is a good habit to run a sanity check on your .json file before pushing it to the device.
Simply copy & paste it to JSON Formatter & Validator. There are many of them available such as https://jsonformatter.curiousconcept.com/
Once the file is on the UniFi-Controller:
Verify the setting by ssh'ing into your USG, enter “configure” and “show system” where the test1-entry now will show up under static-host-mapping.