Guests who will remain not connected to vCenter
4.1.0 ESXi and vCenter 4.1.0
We have four hosts in a cluster, two have no problem while the other two will remain not connected to vCenter. I checked all that in the article 1003409 (http://kb.vmware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 1003409) and found no problem.
Four servers are IBM x 3690 X 5 and all are connected to the same four SAN LUNS, the only difference is that for problem servers management interfaces are on a different subnet, but the port UDP 902 is open between them and the vCenter server. I can reconnect manually, but they will be disconnected again in a minute or two.
Does anyone have ideas beyond what is in the article 1003409 that I can check?
Thank you
Darryl
Make sure you have port 902 open TCP , as well as UDP.
See this article: http://kb.vmware.com/selfservice/documentLinkInt.do?micrositeID=&popup=true&languageId=&externalID=1012382
Regarding the 902 TCP port:
vCenter Server system uses to send data to managed hosts. This port should not be blocked by the firewall between the server and the host or between hosts
If the problem persists, I would try to remove the host to vCenter inventory, add new. Who's going to reinstall agents vCenter on the hosts.
EDIT: This particular excerpt was taken from the entrance to vCenter 5.x, but the same is true for vCenter 4.x (it is high on the table). To be clear, you 902 TCP and UDP open both vcenter for hosts, host to vCenter and host to host.
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