su failure

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# 1  
Old 09-18-2009
Question su failure

Usually when su rejects an attempt to switch user it responds with "Sorry" but with a certain username on some unix servers the response is "Killed". I'm guessing the su accepted the username/password but refused to spawn child shell with the specified username. What's causing this and what has to be done to remediate it so the process is not killed?
# 2  
Old 09-18-2009
What's going wrong of course depends a lot on what it's trying to do. Can the user login -- is it just su that breaks it?
# 3  
Old 09-18-2009
I'm logged into the host using my personal credentials they su to a production username.
Here is the entire exchange:

~ $ su - produser
Enter your LAN Password:
<username produser entered>
~ $

If in another host under my personal credentials ssh into the other host is basically the same.
Here is the exchange

$ ssh produser@host
Enter your LAN Password:
<username produser entered>
Last login: Fri Sep 18 13:13:05 2009 from hostother
/bin/ksh: Not ownerConnection to host closed.

Last edited by twk; 09-18-2009 at 02:21 PM..
# 4  
Old 09-18-2009
Hmm. The "Not owner" message makes me think that the SSH server couldn't change the ownership of the pseudo-terminal to be the name you specified. Usually that means the user doesn't exist or the user id numbers assigned to the user is outside the allowable range of values.

Check the stats for that user and look for anything unusual. Compare the entry to another username that works fine.
# 5  
Old 09-18-2009
Thanks for reply but, unfortunately, I don't know where to go to get the info you mention for me to check.
# 6  
Old 09-18-2009
Originally Posted by twk
Thanks for reply but, unfortunately, I don't know where to go to get the info you mention for me to check.
There is a file called "/etc/passwd", where the user should have a corresponding line. Depending on the systems OS it should look like (or very similar to) this:

produser:x:1000:1000:Production User:/home/produser:/bin/ksh

Depending on your systems OS there might be several other files and/or commands outputs which might shed some light on this.

In case it is an AIX system: the users corresponding stanza in /etc/security/passwd if there is one and the output of "lsuser produser" issued as root.

To know what system you are on (and which OS you want to connect to) wouldn't hurt either. Also interesting would be the type of authentication you are using: local passwords, kerberos, NIS, NISplus, LDAP, other directory services?

Bottom line: describe your system better and help us to help you.

# 7  
Old 09-18-2009
If he doesn't know where to get the information, he also won't have the authority to fix it. So it's probably moot. Time for him to call his sys admin support center.
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