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Delboy 3rd February 2018 08:43 AM
Pi logs?
 
Can anyone tell me what this is all about from my Auth log on the pi3

Code:
Jan 30 10:17:01 Delsraspberrypi CRON[2261]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 10:17:01 Delsraspberrypi CRON[2261]: pam_unix(cron:session): session closed for user root
Jan 30 11:17:01 Delsraspberrypi CRON[2324]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 11:17:01 Delsraspberrypi CRON[2324]: pam_unix(cron:session): session closed for user root
Jan 30 12:17:01 Delsraspberrypi CRON[2404]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 12:17:01 Delsraspberrypi CRON[2404]: pam_unix(cron:session): session closed for user root
Jan 30 13:17:01 Delsraspberrypi CRON[2463]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 13:17:01 Delsraspberrypi CRON[2463]: pam_unix(cron:session): session closed for user root
Jan 30 14:17:01 Delsraspberrypi CRON[2524]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 14:17:01 Delsraspberrypi CRON[2524]: pam_unix(cron:session): session closed for user root
Jan 30 15:17:02 Delsraspberrypi CRON[2607]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 15:17:02 Delsraspberrypi CRON[2607]: pam_unix(cron:session): session closed for user root
Jan 30 16:17:01 Delsraspberrypi CRON[2682]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 16:17:01 Delsraspberrypi CRON[2682]: pam_unix(cron:session): session closed for user root
Jan 30 17:17:01 Delsraspberrypi CRON[2737]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 17:17:01 Delsraspberrypi CRON[2737]: pam_unix(cron:session): session closed for user root
Jan 30 18:17:01 Delsraspberrypi CRON[2843]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 18:17:01 Delsraspberrypi CRON[2843]: pam_unix(cron:session): session closed for user root
Jan 30 19:17:01 Delsraspberrypi CRON[2952]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 19:17:01 Delsraspberrypi CRON[2952]: pam_unix(cron:session): session closed for user root
Jan 30 20:17:01 Delsraspberrypi CRON[3019]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 20:17:01 Delsraspberrypi CRON[3019]: pam_unix(cron:session): session closed for user root
Jan 30 21:17:01 Delsraspberrypi CRON[3078]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 21:17:01 Delsraspberrypi CRON[3078]: pam_unix(cron:session): session closed for user root
Jan 30 22:17:01 Delsraspberrypi CRON[3135]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 22:17:01 Delsraspberrypi CRON[3135]: pam_unix(cron:session): session closed for user root
Jan 30 23:17:01 Delsraspberrypi CRON[3197]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 30 23:17:01 Delsraspberrypi CRON[3197]: pam_unix(cron:session): session closed for user root
Jan 31 00:17:01 Delsraspberrypi CRON[3258]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 31 00:17:01 Delsraspberrypi CRON[3258]: pam_unix(cron:session): session closed for user root
Jan 31 01:17:01 Delsraspberrypi CRON[3318]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 31 01:17:01 Delsraspberrypi CRON[3318]: pam_unix(cron:session): session closed for user root
Jan 31 02:17:01 Delsraspberrypi CRON[3365]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 31 02:17:01 Delsraspberrypi CRON[3365]: pam_unix(cron:session): session closed for user root
Jan 31 03:17:01 Delsraspberrypi CRON[3416]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 31 03:17:01 Delsraspberrypi CRON[3416]: pam_unix(cron:session): session closed for user root
Jan 31 04:17:01 Delsraspberrypi CRON[3510]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 31 04:17:01 Delsraspberrypi CRON[3510]: pam_unix(cron:session): session closed for user root
Jan 31 05:17:01 Delsraspberrypi CRON[3561]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 31 05:17:01 Delsraspberrypi CRON[3561]: pam_unix(cron:session): session closed for user root

moltuae 3rd February 2018 09:17 AM
I've got very limited Linux experience but it looks like you have a cron job (ie scheduled task) running every hour. As I understand it, PAM is just an authentication mechanism, so it could be anything.

If I remember correctly, there should be a text file that contains the cron job configurations. If you open that you should be able to see what has been scheduled to run.

Delboy 3rd February 2018 10:18 AM
Ah might be the ddns updater.


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