Not the answer you're looking for? Ive tried restarting the crond (service restart crond) and confirmed that its running (pgrep cron). Can Klingons swim? Restart crond The issue may be fixed while restating crond... navigate here
A friend suggested that I retry the 9 12 8 * * cronuser /bin/echo "Test" > /var/www/eDialog/test.txt ↪ 2> /var/www/eDialog/error.txt task, after passing the full path to /bin/echo. When cron jobs run, the following error is seen: crond: Permission denied crond: CRON (oracle) ERROR: failed to open PAM security session: Bad file descriptor crond: CRON (oracle) ERROR: cannot set in > /path/to/test.txt) because of set -C.
Frustratingly, it didn't generate any email either. I'll open a new question (referring to this one) in a moment. –Owen Blacker Feb 8 '12 at 13:56 @OwenBlacker: sounds like your cron isn't working at all, and I've no idea why cron wasn't reporting that to me in any manner, let alone a useful manner (or how I somehow managed to get it into the crontab with a Pam_access(crond:account): Access Denied For User `root' From `cron' In which case (a) make sure PHP is set to flush output (or call flush/ob_flush); (b) start putting lines in the script, and see how
Original crond: 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 New crond: auth sufficient pam_rootok.so auth required pam_env.so Error Failed To Open Pam Security Session Success does anyone have any suggestions please? Quote: 1)Each line of the login access control table has three fields separated by a ":" character (colon) : permission : users/groups : origins 2)The first field, the permission field, can https://support.software.dell.com/authentication-services/kb/65471 Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started
Enhanced Linux Enhancing Linux since 2006! You Are Not Allowed To Access To (crontab) Because Of Pam Configuration From the crontab man page: If the cron.allow file exists, then you must be listed therein in order to be allowed to use this command. If the cron.allow file exists, then you must According to that link, the need to comment out, or adjust in some fashion, ALL, ALL except root, will cause PAM to issue the access denied messages you are seeing. And you don't want to throw away error messages when trying to figure out why it isn't working!) Second, cron uses /bin/sh.
Open Source Communities Comments Helpful 7 Follow Non-root users are unable to run cronjobs with custom PAM crond configuration on Red Hat Enterprise Linux 5 Solution Verified - Updated 2012-11-22T06:40:31+00:00 - https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk92873 Alternatively, you can specify where the mail should go by putting [email protected] at the top of the crontab file. (Actually, I see you put MAIL="" at the top of your crontab. Cron Error Failed To Open Pam Security Session Bad File Descriptor Check those email boxes. Cron Failed To Open Pam Security Session (permission Denied) When called upon to perform an authentication (typically verify a user, password) the modules in PAM auth section are called.
Learn more about Red Hat subscriptions Product(s) Red Hat Enterprise Linux Category Troubleshoot Tags authentication cron login Quick Links Downloads Subscriptions Support Cases Customer Service Product Documentation Help Contact Us Log-in casperpache View Public Profile View LQ Blog View Review Entries View HCL Entries View LQ Wiki Contributions Find More Posts by casperpache Thread Tools Show Printable Version Email this Page And I feel stupid: see below –Owen Blacker Feb 10 '12 at 16:35 add a comment| up vote 0 down vote accepted I've found the problem. Im going to have to read up on the PAM Security because i dont really know anything about it. Pam_lastlog(crond:session): No Conversation Function
My /etc/pam.d/crond shows: 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 and all of my /etc/security/access.conf is commented For example: Code: + : root : 0 tty1 #allow from these terminals + : root : 192.168.0.2 #allow from this host - : root : ALL #deny from everywhere else For each time that cron has tried to run my job, I have /var/log/cron entries: crond: Authentication service cannot retrieve authentication info crond: CRON (cronuser) ERROR: failed to open PAM security cron does not need a mailserver to send e-mails.
At least I got the damn thing sorted :) –Owen Blacker Feb 10 '12 at 18:15 add a comment| Your Answer draft saved draft discarded Sign up or log in Root Failed To Open Pam Security Session Permission Denied casperpache View Public Profile View LQ Blog View Review Entries View HCL Entries View LQ Wiki Contributions Find More Posts by casperpache 05-16-2012, 04:19 AM #8 Noway2 Senior Member auth required pam_env.so auth sufficient pam_unix.so nullok try_first_pass auth requisite pam_succeed_if.so uid >= 500 quiet auth required pam_deny.so account required pam_unix.so account sufficient pam_succeed_if.so uid < 500 quiet account required pam_permit.so
Cheers. Have you tried relabeling the filesystem? Noway2 View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by Noway2 05-16-2012, 05:14 AM #9 casperpache LQ Newbie Registered: Oct 2009 Location: Access Cron Conf The time now is 10:33 AM.
To me, it looks like you should try adding your user account to the list before commenting it out. Nice :-( –derobert Feb 10 '12 at 17:51 Well there was an error somewhere eventually, but it was /bin/sh: /usr/bin/php /tmp/helloworld.php: No such file or directory, which is hardly Fixing that led to a different error in /var/log/cron, so, double-checking my crontab I noticed I had specified the username each time. Lets check it: cat /etc/pam.d/system-auth #%PAM-1.0 # This file is auto-generated. # User changes will be destroyed the next time authconfig is run.
Check them for the consistency because in my case /etc/shadow was a culprit missing a record for a username. applmgr:$1$h.RTD.$wq3Zz8x1:15056:0:99999:7::: If you know what i can put then im willing to give anything a try whilst i read up on it. Browse other questions tagged permissions cron or ask your own question. Explore Labs Configuration Deployment Troubleshooting Security Additional Tools Red Hat Access plug-ins Red Hat Satellite Certificate Tool Red Hat Insights Increase visibility into IT operations to detect and resolve technical issues
Otherwise, comment-out all instances of `pam_loginuid.so` from pam.d modules. Thank you both. –Owen Blacker Feb 7 '12 at 21:39 Ok, so I've tested it in the minimal environment (with su -s /bin/sh cronuser and so on, as in You may also replace > by >> for file redirection (eg. share|improve this answer answered Feb 10 '12 at 14:52 Owen Blacker 1458 You didn't get an error because php doesn't bother to report one.
The crond configuration can list the denied or/and allowed users. Finding Files and Binaries on Linux and UNIX → Leave a Reply Cancel reply Search for: Blogroll Christer Edwards Getting Started with Ubuntu SaltStack Sysadmin Blog Ubuntu Tutorials Recommended Hosting Copyright If you need to reset your password, click here. valid XHTML and CSS.
When you say you put that line in "a cron file", which file in particular? We Acted. Password Linux - Security This forum is for all security related questions. have you checked /etc/cron.deny, cron.allow? 3.
Remember, 99% of the time the system log tells you exactly what the problem is.