UPDATE 12/23/2010
VMware support confirms that there is a bug related to the vCenter 4.1 upgrade, it appears to be specifically related to Datastore alarms. The workaround was to go through and disable, then enable all datastore alarms. At least it was better than having to delete and recreate them.
12/21/2010
We ran into an issue where our custom alarms in vCenter weren’t generating alerts after upgrade to vCenter 4.1. All of our existing alarms that were defined in vCenter 4.0 were still in place after the upgrade. However, alarming was inconsistent. We had one alarm defined on a single folder, some of the datastores that met the alert criteria were alarming, some of them weren’t.
I deleted the alarm definition and recreated it, all of the datastores that should have been alarming lit up… I have a ticket open with VMware support. At this point I’m not sure if I’m going to have to manually rebuild all of our alarms.
Matt Mancini
We had to delete all our alarms to get them to work, what a mess… long story short backup you alarms, install fresh, and migrate 🙁
pkremer
I can’t imagine what a nightmare it would be to do a completely fresh install of vCenter and start from the beginning.
We are finding that the alarms are mysteriously disabling themselves, still looking into it.