How to reset users and groups in Server.app?

Question

Recently after change settings in the Server.app (like turn off/on open directory, delete/add certificates), I got a strange problem:
In the users and groups list, it display all local users and groups (looks like system users and groups, about 100 users and groups, but this is a new server)
I tried reset the server.app by following
howto reinstall/reinitialize os x server
http://support.apple.com/kb/HT200271?viewlocale=en_US
These users and groups still showing there.
Have you seen this before and how can I completely reset the server.app to factory default so that I can start over the set up?

Answer 1

In theory, that should restore the users.  You can do some surgery if you are really brave.  But the reinstall generally should be enough. 
These accounts are in the DSLocal data store.  Basically, this is very similar to the any OS X machine.  Apple keeps a default copy of the Local Database here:
/System/Library/DirectoryServices/DefaultLocalDB/Default
Should you need to reset a machine to the default local database, you can remove the current database (/var/db/dslocal/nodes/Default) and then copy the default one to the same location.  I would not go this far unless the reinstall was unsuccessful. 
To check, you can run this command:
dscl . list /Users
That will list all the Users in the local DB.   To get a count, pipe to wc
dscl . list /Users | wc -l
On a Server that I just jumped on, I see 79 users and 111 groups (dscl . list /Groups | wc -l)  But this is a system will man SACL groups so I likely have more than the default.
Hope this continues to help.  Probably more info that you want. 
Reid
Apple Consultants Network
Author "Mavericks Server – Foundation Services" :: Exclusively available in Apple's iBooks Store
Author "Mavericks Server – Control and Collaboration" :: Exclusively available in Apple's iBooks Store