hi:
when testing nut in our environment, we found something that nut
maybe tune for "stale/dead ups" situation. currently the "dead ups"
are assume alive(eg: host shutdown unnecessary), unless it is in the
"OB" state before going to stale.
our environment (ServerA + ServerB forms a cluster):
ServerA-> usb to UPSA -> two PS power by UPSA and UPSB -> upsmon
monitor two UPS
ServerB-> usb to UPSB -> two PS power by UPSA and UPSB -> upsmon
monitor two UPS
now if ServerB crash and then power's been cut, ServerA won't
shutdown since UPSB is stale/dead.
in Server A situation, I want to assume UPSA is "alive/no need
shutdown" when it is stale, but I want to assume UPSB is "dead/need
shutdown" when it is stale. to accomplish that, maybe uspmon can have
a flag to indicate that:
MONITOR ftups@localhost 1 monmaster passmaster master alive
MONITOR [email protected] 1 monslave nutslave slave dead
maybe there are other situations that people want to declare "stale"
ups as "dead/need shutdown"..
Regards,
tbskyd
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