Letsencrypt updates system log every minute with renew entry

Question

Since implementing letsencrypt i'm seeing the following show up in the main system log every minute. 
 
 2019:04:08-12:49:01 utm /usr/sbin/cron[9766]: (dehydrated) CMD (/var/chroot-reverseproxy/usr/dehydrated/bin/renew_certificate.pl > /dev/null) 
 This is way too often. The resulting crontab entry appears below 
 utm:/etc # cat crontab.letsencrypt-renewal # Check CSRs for renewal 27 4 * * * dehydrated /var/chroot-reverseproxy/usr/dehydrated/bin/check_renewal.pl -s > /dev/null # Renew marked CSRs * * * * * dehydrated /var/chroot-reverseproxy/usr/dehydrated/bin/renew_certificate.pl > /dev/null 
 Checking once a day is good enough since it can renew 30 days before expiration. 
 Before I manually change it, does this file survive reboots?

Jay Jay · Answer

This sloppy bug has been bugging me long enough. Come on Sophos, FIX this stupid bug already! 
 
 In the mean time, I added the code below to another script that's run every 10 min to make sure the 802.1x wpa_supplicant is running properly. This checks the crontab file for presence of * * * * * dehydrated..... Which is what the line with the renew script starts with. If present, changes it to run daily at 2:30am then restarts crontab. If it's already changed it does nothing 
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 grep -F "30 2 * * * dehydrated" /etc/crontab > /dev/null 2>&1 if [ $? -ne 0 ]; then sed -i 's/\* \* \* \* \* dehydrated/30 2 \* \* \* dehydrated/' /etc/crontab echo "`date +%Y:%m:%d-%H:%M:%S` `hostname | cut -d'.' -f1` check crontab: crontab updated" >> $LOG 2>&1 /etc/init.d/cron restart > /dev/null 2>&1 fi 
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