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Bug 170802

Summary: cronjobs start too early
Product: Red Hat Enterprise Linux 3 Reporter: Jason Vas Dias <jvdias>
Component: vixie-cronAssignee: Jason Vas Dias <jvdias>
Status: CLOSED ERRATA QA Contact: Brock Organ <borgan>
Severity: medium Docs Contact:
Priority: medium    
Version: 3.0CC: benl, cchen, matt
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
Whiteboard:
Fixed In Version: RHSA-2005:0117 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-05-01 17:56:34 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 106578    
Bug Blocks: 161600    

Description Jason Vas Dias 2005-10-14 16:07:46 UTC 
+++ This bug was initially created as a clone of Bug #106578 +++

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; de-AT; rv:1.4) Gecko/20030624

Description of problem:
sometimes cronjobs start earlier then configured in crontab.
Example:

* * * * *  date +'\%s.\%N' >> /tmp/date-2.log ;date >> /tmp/date-2.log

Wed Oct  8 12:21:00 CEST 2003
1065608519.783610000
Wed Oct  8 12:21:59 CEST 2003
1065608580.791188000

the smallest intervall is 58.1968970298767

this problem is very dangerous for example logrotating at 00:00:00 with a date
in file name

You can also find some entries in cron log from cron.hourly with HH:00:59
(should be > HH:01:00)

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1.crontab -e: * * * * *  date +'\%s.\%N' >> /tmp/date-2.log
2.cat date-2.log |sort -nr|perl -ne '$NEW=$_;chop $NEW ;print "$NEW - $LAST:\t";
print $NEW - $LAST ."\n" ;$LAST=$NEW ;'
3. or: grep cron.hourly /etc/crontab; grep ":00:59" /var/log/cron*
    

Additional info:

-- Additional comment from matt on 2004-02-10 19:00 EST --
I have this problem too, on RedHat 7.3, with vixie-cron-3.0.1-64.

-- Additional comment from jvdias on 2004-08-04 19:19 EST --
Fixed in vixie-cron-4.1-+ (latest version 4.1-7).
Comment 1 Jason Vas Dias 2005-10-14 16:08:47 UTC 
This bug is fixed with vixie-cron-4.1-8_EL3, available from:
  http://people.redhat.com/~jvdias/cron/RHEL-3
and should be considered for inclusion in RHEL-3-U7 .
Comment 3 Jason Vas Dias 2006-05-01 17:56:34 UTC 
Fixed with vixie-cron-4.1-10.EL3, currently in RHEL-3-U7 with errata
RHSA-2005:0117.