I am now entrusted with administrating some 40 computers with Debian 8. The computer where the configuration files (with Debian FAI) were stored on had a HDD defect, there was no backup. Therefore we don't really know what actually is configured out there.
My plan is to scrape the configuration from one workstation and then build everything again with Ansible. If I can build a new VM from this, then I know what is configured. I have figured out a few things (Network interfaces, printing, DNS, ...), but the user account mechanism I haven't. Home directories are mounted via NFS4.
They have some central login mechanism, one can log in with the same accounts on all computers. To change your password, you have to use
yppasswd. So I presume it is some YP/NIS thing. But the
/etc/yp* files are all the default ones. And I have not found anything with NIS.
What user management system is used there? Where do I find the configuration files that need to be set up?