Once again I'm reminded that going in and doing /etc/init.d/mgmt-vmware restart and then /etc/init.d/vmware-vpxa restart is fairly dangerous and should only be done as a LAST resort.
A co-worker was removing old NFS mounts and replacing them with new ones. So same named NFS mount was being used. He did an esxcfg-nas -d and then an esxcfg-nas -a and per our instructions, restart the mgmt agents so VirtualCenter would see them properly. In doing this with U4 plus a month of patches, VirtualCenter lost connectivity with the host agent with a vim.fault.NotAuthenticated.
The fix is to disconnect and reconnect as you can't put these systems into Maintenance Mode since VMotion doesn't work. Together we figured out a nicer way to do the mount point cleanup.
- esxcfg-nas -d
- esxcfg-nas -a
- vimsh -n -e "internalsvc/refresh_datastores"
- vimsh -n -e "hostsvc/datastore/refresh