We have same problem on one host HP DL 380 G5 with ESXi 4.1.0 build 260247, the other host works normally
we only can reboot
How many server have you on the critical host? and what is the current status for those servers?
two Windows 2003 Servers
what do you mean with status?
Now they are running, we reboot host yesteday
one detail is we dont't have ssh access to host when it disconnects from vcenter
It's as hostd and vpxa daemons on this host go down at the same time and the last solution is to reboot host
You need to rebuild this host and reconnect it again on your cluster
After this step, please install all patches and firmware on those two hosts.
do you mean reinstall host?
and why this problem is not on others hosts?
Yes, You need to reinstall the host.
Did you make any change on the current host?
sorry but we have ESXi 4.1, not ESXi 4.0
and we don't add, remove and re-add the host to vcenter
no changes on host
now we want to update hostd & vpxa config files to increase size logs so we don't have logs of the day of failure. then we will wait to a new failure and see logs