Friday, August 5, 2011

False management network redundancy alert

We upgraded our DR cluster hosts recently and ran into this where vCenter was reporting:

HostXYZ "currently has no management network redundancy"


But wait - thats not true, the vSwitch clearly has two active connections!
I tried reconfiguring the ordering of the nics in the teaming config, but the warning persisted.

Then I found KB1004700 which starts talking about ignoring/suppressing the warning (very bad practice to ignore alerts! for what should be obvious reasons).
But I kept reading and saw:

"Note: If the warning continues to appear, disable and re-enable VMware High Availability in the cluster."

So I disabled and enabled HA and this cleared the alert - no suppression of alerts needed!

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