vDS out of sync

“The vNetwork Distributed Switch configuration on some hosts differed from that of the vCenter Server.”

If you see this message, don’t panic. Distributed switches are managed by vCenter, but there is a database copied to each host with information on the switch (very handy if vCenter goes down).

This database is synched every 5 minutes. Often when an entire environment is started, vCenter will report the above message on the summary page of the switch like so:

You may also see this on the hosts wizard for the switch:

This message is just an FYI and should go away after the first sync, you may need to refresh the view however.

I do not see a way to manually force a sync – if anyone knows of a way post below.

Thanks Danny! You have to be quick about it – the switch might resync and clear the option he mentions but still display the alarm – but here’s the manual (GUI) resync:

Here is the screen if you are not quick enough: (note the ! alarm still on the vDS)

Here is the screen if you catch it in time:

The task that pops up (no questions or pop-ups when to hit Rectify):

Note tho that it still took ~5 minutes for the alarm to clear from the vDS.

Thanks Danny for the note. Anyone got a command-line method?