During an upgrade of Aria Operations, the VMs are rebooted. After the reboot, the console of the VM shows the below 'Firstboot failed' error and the GUI(both /ui and /admin) becomes inaccessible.
Firstboot failed
Please see the log files in the following directory
/var/log/firstboot/
Aria Operations 8.x upgrading to 8.18.x
Japanese version: Aria Operations のアップグレードが失敗し、コンソールには「firstboot failed」が表示される。