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su: No shell/No directory! if sys is added to a users secondary group


 
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Operating Systems Solaris su: No shell/No directory! if sys is added to a users secondary group
# 1  
Old 08-09-2010
su: No shell/No directory! if sys is added to a users secondary group

Hi,
When I include a user to the secondary group "sys" GID=3 in Solaris 9 OS I'm not able to login. I get these error. The user home directory and the shell exists. Is this because of any security hardening.

Code:
# su - agent
No directory!
# su agent
su: No shell

# grep taddm /etc/passwd
agent:x:5001:5001::/home/agent:/bin/ksh

# ls -ld /home/agent
drwxr-xr-x   2 agent    agent        512 Aug  9 10:10 /home/agent

# ls -l /bin/ksh
-r-xr-xr-x   3 root     bin       201076 Aug  9  2005 /bin/ksh


Last edited by pludi; 08-09-2010 at 06:49 AM.. Reason: code tags, please...
# 2  
Old 08-09-2010
Do you use the automounter at all ?
I setup the same as you had above on a generic Sol 9 box and it worked fine.
Could you also supply an "cat /etc/shells" , "grep agent /etc/group" and "cat /etc/nsswitch.conf".
Thx
# 3  
Old 08-09-2010
Code:
# cat /etc/shells
/usr/bin/sh
/usr/bin/csh
/usr/bin/ksh
/usr/bin/jsh
/bin/sh
/bin/csh
/bin/ksh
/bin/jsh
/sbin/sh
/sbin/jsh
/sbin/noshell
/bin/bash
/bin/pfcsh
/bin/pfksh
/bin/pfsh
/bin/tcsh
/bin/zsh
/usr/bin/bash
/usr/bin/pfcsh
/usr/bin/pfksh
/usr/bin/pfsh
/usr/bin/tcsh
/usr/bin/zsh

# grep agent /etc/group
adm::4:root,adm,daemon,agent
sys::3:root,bin,sys,adm,agent
agent::5001:

#cat /etc/nsswitch.conf
passwd:     files
group:      files

I can login normally, I have this problem only when I add the user to the secondary group sys. Any idea?

Last edited by Scott; 08-09-2010 at 11:01 AM.. Reason: Please use code tags
# 4  
Old 08-09-2010
And do you use the automounter ?
# 5  
Old 08-09-2010
Hi, How could I find it? I have these configuration.

Code:
# tail /etc/auto_master
# Master map for automounter
#
+auto_master
/net            -hosts          -nosuid,nobrowse
/home           auto_home       -nobrowse
/xfn            -xfn

# more /etc/auto_home
# Home directory map for automounter
#
+auto_home


Last edited by Scott; 08-09-2010 at 11:01 AM.. Reason: Code tags, please...
# 6  
Old 08-09-2010
Code:
/home auto_home -nobrowse

I believe this line indicates that it is.
I have had issues like this is the past from the automounter, and unless you *need* this functionality, I normally disable it by removing this line from /etc/auto_master and re-start the automounter.
This is not really a fix, but a workaround.
Another tack would be to checkout the Solaris Patches as it may well be a known issue.
# 7  
Old 08-09-2010
Hi, I'm afraid I cant disable it. Can this user home directory be moved to /export/home/agent instead of /home/agent. Will this fix the problem?

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