Ok. That's STRANGE. Similar issues: enter link description here
We are running other ESXi 7.0 Update 2a servers but now we began setting a few from scratch and guess what? The login credentials STOP WORKING ALTOGETHER randomly and persistently even in the middle of a f**** session.
We've kept ordering additional KVM hours in the datacenter reinstalling ESXi just for the loop to continue.
This holds for SSH/Web AND remote Workstation 16 connections.
The servers that were upgraded to 7.0a2 work FINE. The new ones with ESXi installed from an ISO (downloaded directly from vmWare) break even if the password is the same as on the old ones (just to rule out some inconsistent rules-processing among access interfaces)
To rule out the possibility of us having broken keyboards or something we were literally copy pasting passwords from plaintext into ssh and web-terminals. We've triple checked keyboard layouts and stuff. wtf?
UPDATE:: AFTER restarting the servers. The (same) passwords work at random. Some crazy s*** going on here. We've been monitoring traffic no suspicious 'attacks' that would make accounts go into lockdown etc.
Update 2: The only solution which seems to work for now is to physically restart the servers after which the login works... for a couple of minutes. There do not seem to be any relevant entries in logs.
Update 3: it's getting ridiculous. We've found another 'work-around'. Instead of hardware hot-resetting the entire f*** server with all the VMs within, we keep one web-session open all the time and when sh** hits the fan we just.. change password to the same one in web-ui. go figure. that makes things work for more ..minutes. when web-ui disconnects. gotta reset servers.