I recently ran in to a situation where one of the events in vCenter wasn’t showing up in Operations Manager
Doing some research and i found this kb article: 65106
Basically theres a file called eventlist.txt under /usr/lib/vmware-vcops/user/plugins/inbound/vmwarevi_adapter3/conf/ on the master node so i logged on to master node via ssh and did
vi /usr/lib/vmware-vcops/user/plugins/inbound/vmwarevi_adapter3/conf/eventlist.txt
Comment out the event that we want to get alerts for and restart the service by running
service vmware-vcops restart collector