Yesterday evening I tried updating my Zentyal 6.1.2 (or so) to at least the lastest 6.1.x, if possible 6.2.
However after I sucessfully ran the first batch of updates the machine refused to boot. Just after post I got a black screen with high CPU usage but barely any memory usage and nothing happening other then that, even though I left it like that for about 15 minutes.
For the moment i'm not super interested in troubleshooting why this happened, even though that's obviously super weird. I still have this dead VM which I will peruse at a later moment.
Unable to fix this and a dead DC obviously beeing a issue, I restored a virtual machine backup (Zentyal runs in KVM/QEMU VM on a Proxmox cluster) I made prior to running the updates, and booted that instead.
However, now when I create a user on the PDC in Zentyal's web interface or with "samba-tool user create" on the command line, the user cannot log on in the domain, and the user does not show up on the BDC which is our file server (this is another Zentyal VM), nor does it show up in the Active Directory tree when looked at with RSAT.
The only place it DOES show up in the Zentyal interface of the PDC itself.
At first I thought something in sync broke somehow and started troubleshooting this angle, but changes from our fileserver/BDC do propagate back to to the Domain Controller/PDC (including new users). And I can't find any problems with syncronisation itself when running tools like "samba-tool drs showrepl" and forcing it with "samba-tool drs replicate <rest of the synthax>". These all pass without error.
Also when I create a user directly in the AD tree using RSAT it shows up on both machines and these crededentials can subsequently also be used to log onto the network.
Where can I look to start troubleshooting this matter? I'm all out of ideas for the moment, i've been wresteling with this issue all day.
I don't really care all too much about the web interface not working but especially "samba-tool user" is used to automate this that and the other.