LinuxQuestions.org - Help me on Cron job error

- Linux - Server (https://www.linuxquestions.org/questions/linux-server-73/)

- - Help me on Cron job error (https://www.linuxquestions.org/questions/linux-server-73/help-me-on-cron-job-error-4175429012/)

mhrlive

09-25-2012 04:54 PM

Help me on Cron job error

Hello,
Im new here and beginner on CentOS so helps are appreciated,
The problem is that everytime when a cronjob run I get this error on the log:

Code:

Sep 25 22:29:01 host crond[1821]: Cannot make/remove an entry for the specified session

Sep 25 22:29:01 host crond[1821]: CRON (root) ERROR: failed to open PAM security session: Success

Sep 25 22:29:01 host crond[1821]: CRON (root) ERROR: cannot set security context

Note that the command line run normally from SSH command.
And the same script was running fine on another hosting.

update:
here is what /var/log/secure log file show:

Quote:

Sep 25 23:56:01 host crond[32016]: PAM pam_parse: expecting return value; [...requires]
Sep 25 23:56:01 host crond[32016]: PAM unable to dlopen(/lib/security/pam_winbind.so)
Sep 25 23:56:01 host crond[32016]: PAM [error: /lib/security/pam_winbind.so: cannot open shared object file: No such file or directory]
Sep 25 23:56:01 host crond[32016]: PAM adding faulty module: /lib/security/pam_winbind.so
Sep 25 23:56:01 host crond[32016]: pam_loginuid(crond:session): set_loginuid failed
Sep 25 23:56:01 host crond[32016]: pam_unix(crond:session): session opened for user root by (uid=0)
Sep 25 23:56:01 host crond[32016]: pam_unix(crond:session): session closed for user root

TB0ne

09-25-2012 05:05 PM

Quote:

Originally Posted by mhrlive (Post 4789224)

Hello,
Im new here and beginner on CentOS so helps are appreciated,
The problem is that everytime when a cronjob run I get this error on the log:

Code:

Sep 25 22:29:01 host crond[1821]: Cannot make/remove an entry for the specified session

Sep 25 22:29:01 host crond[1821]: CRON (root) ERROR: failed to open PAM security session: Success

Sep 25 22:29:01 host crond[1821]: CRON (root) ERROR: cannot set security context

Note that the command line run normally from SSH command.
And the same script was running fine on another hosting.

...and unless you post the script and give us details about it, there's little we can do. Those error(s) are in the script itself, not cron. Best guess would be it's either running as root and needs to run as another user, or that there's an inherited environment variable in your shell, that's not present in CRON.

Post the script and we might be able to help.

mhrlive

09-25-2012 05:16 PM

Quote:

Originally Posted by TB0ne (Post 4789231)

here is the line to run GET http://*****/local_service.php >/dev/null 2>&1

and here is the PAM configuration for cron:

Code:

#

# The PAM configuration file for the cron daemon

#

#

auth          sufficient pam_env.so

auth      required  pam_rootok.so

auth      include    system-auth

account    required  pam_access.so

account    include    system-auth

session    required  pam_loginuid.so

session    include    system-auth

please help

unSpawn

09-25-2012 07:27 PM

Start by removing "pam_winbind.so" from /etc/pam.d/system-auth?

mhrlive

09-26-2012 06:31 AM

Quote:

Originally Posted by unSpawn (Post 4789307)

Start by removing "pam_winbind.so" from /etc/pam.d/system-auth?

Tried that and doesn't help :/
How can I remove the crond package and reinstall it ?

unSpawn

09-26-2012 07:15 AM

Quote:

Originally Posted by mhrlive (Post 4789661)

Tried that and doesn't help

"Doesn't help" is not a diagnostic message we can do anything with. Instead post /var/log/secure and /var/log/cron output like you did before.

Quote:

Originally Posted by mhrlive (Post 4789661)

How can I remove the crond package and reinstall it ?

With Linux there's rarely reason to remove and re-install software as it may disrupt services and it's, with all due respect, a reflex people learnt using a certain other OS. Please get used to troubleshooting things properly and that starts with diagnosing things properly.

mhrlive

09-26-2012 07:53 AM

Quote:

Originally Posted by unSpawn (Post 4789706)

"Doesn't help" is not a diagnostic message we can do anything with. Instead post /var/log/secure and /var/log/cron output like you did before.

With Linux there's rarely reason to remove and re-install software as it may disrupt services and it's, with all due respect, a reflex people learnt using a certain other OS. Please get used to troubleshooting things properly and that starts with diagnosing things properly.

Thanks for the replay as I montion Im a beginner,
the /var/log/secure show everytime cron job is launched:

Code:

Sep 26 13:37:01 host crond[23327]: PAM unable to resolve symbol: pam_sm_acct_mgmt

Sep 26 13:37:01 host crond[23328]: PAM unable to resolve symbol: pam_sm_acct_mgmt

Sep 26 13:37:01 host crond[23327]: pam_loginuid(crond:session): set_loginuid failed

Sep 26 13:37:01 host crond[23327]: pam_unix(crond:session): session opened for user root by (uid=0)

Sep 26 13:37:01 host crond[23327]: pam_unix(crond:session): session closed for user root

Sep 26 13:37:01 host crond[23328]: pam_loginuid(crond:session): set_loginuid failed

Sep 26 13:37:01 host crond[23328]: pam_unix(crond:session): session opened for user apache by (uid=0)

Sep 26 13:37:01 host crond[23328]: pam_unix(crond:session): session closed for user apache

and the cron log show :

Code:

Sep 25 22:29:01 host crond[1821]: Cannot make/remove an entry for the specified session

Sep 25 22:29:01 host crond[1821]: CRON (root) ERROR: failed to open PAM security session: Success

Sep 25 22:29:01 host crond[1821]: CRON (root) ERROR: cannot set security context

unSpawn

09-26-2012 08:26 AM

Quote:

Originally Posted by mhrlive (Post 4789745)

the /var/log/secure show everytime cron job is launched:

Code:

Sep 26 13:37:01 host crond[23327]: PAM unable to resolve symbol: pam_sm_acct_mgmt

Sep 26 13:37:01 host crond[23328]: PAM unable to resolve symbol: pam_sm_acct_mgmt

Sep 26 13:37:01 host crond[23327]: pam_loginuid(crond:session): set_loginuid failed

Sep 26 13:37:01 host crond[23327]: pam_unix(crond:session): session opened for user root by (uid=0)

So nothing has changed in /var/log/cron. Good. One down, one to go.

What kernel are you running?

Code:

uname -a

And please attach as plain text file the "/tmp/rpmv.log" from running:

Code:

rpm --nodeps --noscripts -vV $(rpm --qf="%{NAME}\n" -qf /etc/pam.d/*|grep -v owned|sort -u)|\

grep -v "\.\{8\}"|grep "^.*5.*etc/pam.d"|awk '{ { system("cat "$NF); } }' 2>&1|tee /tmp/rpmv.log

Quote:

Originally Posted by mhrlive (Post 4789745)

Code:

Sep 26 13:37:01 host crond[23328]: pam_unix(crond:session): session opened for user apache by (uid=0)

Sep 26 13:37:01 host crond[23328]: pam_unix(crond:session): session closed for user apache

BTW, please explain what cron jobs Apache is running here?

mhrlive

09-26-2012 03:36 PM

Quote:

Originally Posted by unSpawn (Post 4789769)

So nothing has changed in /var/log/cron. Good. One down, one to go.

What kernel are you running?

Code:

uname -a

And please attach as plain text file the "/tmp/rpmv.log" from running:

Code:

rpm --nodeps --noscripts -vV $(rpm --qf="%{NAME}\n" -qf /etc/pam.d/*|grep -v owned|sort -u)|\

grep -v "\.\{8\}"|grep "^.*5.*etc/pam.d"|awk '{ { system("cat "$NF); } }' 2>&1|tee /tmp/rpmv.log

BTW, please explain what cron jobs Apache is running here?

Hello again,
The cron log still show the same error:

Code:

Sep 26 16:18:01 host crond[9092]: Cannot make/remove an entry for the specified session

Sep 26 16:18:01 host crond[9092]: CRON (root) ERROR: failed to open PAM security session: Success

Sep 26 16:18:01 host crond[9092]: CRON (root) ERROR: cannot set security context

uname -a return :

Code:

Linux host.****.com 2.6.32-5-vserver-amd64 #1 SMP Sun May 6 06:53:58 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

rpmv log :

Code:

#%PAM-1.0

# This file is auto-generated.

# User changes will be destroyed the next time authconfig is run.

auth        required      pam_env.so

auth        sufficient    pam_unix.so try_first_pass nullok

auth        required      pam_deny.so



account    required      pam_unix.so



password    required      pam_cracklib.so try_first_pass retry=3

password    sufficient    pam_unix.so try_first_pass use_authtok nullok md5

password    required      pam_deny.so



session    optional      pam_keyinit.so revoke

session    required      pam_limits.so

session    [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid

session    required      pam_unix.so

also here what I found on the /var/log/secure when cron job run:

Quote:

Sep 26 16:56:01 host crond[2071]: pam_loginuid(crond:session): set_loginuid failed

The cron job is a script to save data (stats) to the DB every one hour.. tried everything I found on google search for three days but nothing fixed the error, please help time press I have to fix this before Saturday :/

mhrlive

09-27-2012 06:31 AM

Hello guys, good news :)
I managed to resolve the problem, only by commenting any line with "session required pam_loginuid.so" on the files in /etc/pam.d/

Code:

/etc/pam.d/crond:session required pam_loginuid.so

/etc/pam.d/login:session required pam_loginuid.so

/etc/pam.d/remote:session required pam_loginuid.so

/etc/pam.d/sshd:session required pam_loginuid.so

I dont know the exact file or files that resolve the problem, may be the crond I will check later, but now the cronjob run smooth and clean, wish this help future visitors on this page with similar problem.

All times are GMT -5. The time now is 12:47 AM.