I have a cron task that calls a special PHP script via wget. Here is the crontab entry:
0 * * * * wget http://www....
It will work perfect for several days, running on the hour. However, after a few days the cron job will start to be called several times an hour. I have never seen CRON drift like this, so I imagine it can't really be a CRON issue. However, the logs of the script that is called clearly show it running several times an hour.
- Ubuntu Luci
- Time is showing correct @ command line
- Server is setup to sync with a NTP server
In order for the script to run it must be passed a unique 50-character hash key in the URL, so this script isn't being called from any other source accidentally.
What might cause CRON to drift like this?