I have one UPS and its USB is connected to another system. I need to issue remote shutdown commands to multiple systems from the system with the USB. One of the systems that needs to be shut down remotely is OMV.
So my question is, what command do you recommend to shut down OMV --GRACEFULLY-- ?
That is to say, I don't want the drives to lose any data.
Setup:
OMV->Luks plugin->ZFS plugin.