So i upgraded vman from 5.1.1 to 6.0 to 6.1.1 which seemed to work fine. however after 2 days of collection, the collection just stopped. we are licensed and under maintenance but when I log into the Vman Console, there is zilch, zip, zero. I do have a case open with support who told me to just make sure the collection jobs are running which i beleive they are but when i go to the help tab i see 0 of 700 vm's monitored
You might check to see if your issue is related to this: Data collection fails for some vCenter Servers after upgrading to Virtualization Manager 6.1.1. vCenter's that have been upgraded from 4.0 or below are affected by a short (non-secure) certificate.