TrueNAS stucked in check-ha status
You can check the version of each controller from the CLI with the following command:
cat /etc/version
On the system that is NOT running 12.0-U81., you would want to run the following commands:
That command will pull the latest download file
freenas-update -T TrueNAS-12.0-STABLE -v check
That command will create the boot environment
freenas-update -T TrueNAS-12.0-STABLE -v update
After that „update“ command finishes (5-10 minutes or so), you will need to type „reboot“ to reboot the controller and have the update take effect.
reboot
Following that process, you should have both controllers running the same OS.
If you bought a Support option from ixsystems you can log into the UI and provide a new debug so ixsystems can verify system health/status.