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The original was posted on /r/sysadmin by /u/Important_Ad_3602 on 2024-01-24 08:49:36+00:00.
I have 2 Dell Hyper-V hosts, one being replication destination / standby in case of failure. These servers are connected to an out-of-band network via iDrac. They are powered via 2 UPSes both connected to a seperate outlet.
Now, when the power fails on both outlets, the UPSes send an SMTP trap to my out-of-band server. I want it to then immideately shutdown the standby Hyper-V host, to preserve power. But ONLY if it is not running Hyper-V guests.
So i need some way of communication between the OS and iDrac. In the manual i found "OS to iDRAC Pass-through" which may be what i need. Is there a risk in enabling this feature, since it gives the OS access to the iDrac module? Or is there another way to achieve what i want? Manipulate a hardware device that the iDrac monitors via SNMP trap?