I just updated one of my servers from 7.0-RC1 to 7.1-RELEASE.
During the first freebsd-update install, before rebooting, I was surprised
to find that it was going to change my /etc/passwd (deleting all my
accounts, keeping only the built-in accounts) and /etc/pwd.db and
/etc/spwd.db. I was quite suspicious so I made copies of them.
After rebooting the machine came back online perfectly. I checked
/etc/passwd but there were no changes yet. Then, as the docs says, I ran
freebsd-update install again and it took quite a while. *Then* my
/etc/passwd was changed, so I replaced it with the spare copy I made. Of
course I had to test it now so I exitted from root back to my own account,
and you guessed it: I can't su anymore:
$ su -
su: who are you?
I started up a second session and found my own account doesn't work
anymore either. So all I have now is an open session with my own account.
I should probably also have copied the two db files back and of course I
should have left my running root session open and started another one. Not
a very bright moment..
Is there a way I can recover the server from this ?
Of course I can put in a cd and change some passwords, but the server is
in a datacenter and I don't really have the time to go there and fix it.
I'm looking for a remote solution.
It's probably not much help but there's one jail running on it that's
still working fine. I can login and su on that one, but I don't know if I
can use it to repair the main system.
Please, help !
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