Docker alpine linux cron作业每次运行3次

Question

I'm running crontab-ui and php inside a docker container deployed to azure. Every cron job I set up it runs 3 times (email sent 3 times, logged 3 times). Tried a different approach on another container and got the same result.

Here is my crontab:

*       *       *       *       *       sh /usr/local/bin/triage-rotate.sh
*       *       *       *       *       sh /usr/local/bin/wp-cron.sh

and here is wp-cron.sh

#!/bin/sh
ps -ef | grep "wp cron" | grep -v grep
process=`ps -ef | grep "wp cron" | grep -v grep | wc -l`
echo $process
if [ $process -eq 0 ]; then 
    wp cron event run --due-now --path=/var/www/html/ --allow-root
fi

I was watching top on terminal and wp-cron.sh only gets triggered once. I have a wp scheduled event that sends an email twicedaily and I receive 3 emails every time.

Any thoughts?

Answer 1

This issue may be possible that your hook might be being executed more than once, you can prevent execution of hook more than once on your specific code using did_action.

• Ensure you should set WordPress Cron to "NO if you are utilizing the cron job URL to initiate sending. Otherwise, if multiple people attempt to send at the same time, multiple email will be triggered at the end
• Check whether you accidentally initialized the cron service at twice and try to stop cron # /etc/init.d/crond and start it again # /etc/init.d/crond start,
• please check whether your system have two cron daemon. The fact that two cron daemons are operating simultaneously due to which these issues may occur. Also, check another user installed and/or activated or needs to be active at once.

Please check this similar So thread by erotsppa