Dear All,
In my lab environment with only one host (ESXi 6.5) I recently changed my Vcenter installation from Windows standalone to Vcenter appliance 6.5. This VC appliance is installed on the same host. I see - when logged in to vcenter web - from time to time that all VMs shows as disconnected. It usually takes a few minutes and after that everything is fine. Usually this would indicate that the Vcenter applicance could not ping the host. But when this happen I log in to Vcenter appliance using putty and I can ping the host. It appears everyhing is reachable by pinging.
Any idea what this could be? It's not a big deal, but I'm curious.
Thanks,
Edy
IP conflict or ping loss?
Are all hypervisors and vCenter Servers in the same subnet?
Thanks there is no IP conflict and everything is on the same subnet. When I see in Vcenter that the host is disconnected and all my VMs I'm able to ping vcenter appliance and host from a workstation.
Anything in the logs and/or "Events" and "Alarms" tabs?
Thanks - This time I found the problem, but not sure it is resolved forever.
After I saw your reply. I logged in to Vcenter and the host showed disconnected again. I ssh into vcenter and ping the host. no reply. However I could ping the host from my workstation which is on the same subnet. I restarted then the management network on the host and after that i was able to ping the host from vcenter ssh. Vcenter webclient showed my host online.
However after a few minutes suddenly my host was disconnected again and I couldn't ping the host from ssh vcenter. My workstation pinged the host just fine. I ended up to restart the management network again and now it works.
I think there is a problem with the management network. Are there some settings I could improve things?
Thanks,
Edy
As asked before: have a look at Task/Events and Logfile of the hypervisor (vmkernel.log).
Maybe you can find anything there