We have a HP DL 380 G7 server with ESXi 5.1 installed, The host has grayed out in the vCenter about an hour ago and the "not responding" appeared in front of its name.
I can ping the host and all VMs are running and responding.
I searched and founded that "restarting the management agents" may solve the problem (KB1003490), then:
- I tried to login through DCUI to access the host and restart the management agents, but after typing the root password, nothing comes up. There was no response from the host through DCUI
- I tried to login to the host directly from vSphere Client with the "root" account, but I couldn't.
- I opened the host in a browser, there was just one error : 503 service unavailable
What should I do to solve the problem?