Cron repeatedly opens and closes for root?

Shimdidly · 03-23-2012, 09:11 AM

Checking auth.log, I see this a lot:

Code:

Mar 23 06:37:13 diwars CRON[1112]: pam_unix(cron:session): session closed for user root
Mar 23 06:39:01 diwars CRON[1521]: pam_unix(cron:session): session opened for user root by (uid=0)
Mar 23 06:39:01 diwars CRON[1521]: pam_unix(cron:session): session closed for user root
Mar 23 07:09:01 diwars CRON[1528]: pam_unix(cron:session): session opened for user root by (uid=0)
Mar 23 07:09:01 diwars CRON[1528]: pam_unix(cron:session): session closed for user root
Mar 23 07:17:01 diwars CRON[1536]: pam_unix(cron:session): session opened for user root by (uid=0)
Mar 23 07:17:01 diwars CRON[1536]: pam_unix(cron:session): session closed for user root 
Mar 23 07:27:42 diwars sshd[1539]: pam_unix(sshd:session): session opened for user shimdidly by (uid=0)
Mar 23 07:31:47 diwars sshd[1539]: pam_unix(sshd:session): session closed for user shimdidly
Mar 23 07:39:01 diwars CRON[1671]: pam_unix(cron:session): session opened for user root by (uid=0)
Mar 23 07:39:01 diwars CRON[1671]: pam_unix(cron:session): session closed for user root
Mar 23 08:09:01 diwars CRON[1681]: pam_unix(cron:session): session opened for user root by (uid=0)
Mar 23 08:09:01 diwars CRON[1681]: pam_unix(cron:session): session closed for user root

What does this mean? Is it normal/necessary behavior?

acid_kewpie · 03-23-2012, 09:31 AM

well if you have cron jobs that are configured to do that, then it's clearly going to be very normal... do you? check /etc/crontab, /etc/cron.d and "crontab -l"