Cancel/Stop a currently ongoing scheduled cron event?

Question

If I scheduled a CPU-intensive job via a cron scheduled event, how do I go about stopping it or cancelling the job while it is currently running?

Answer 1

Removing / un-scheduling obsolete cron jobs can be achieved using this code snippet.

add_action("init", "remove_cron_job"); 
function remove_cron_job() {
 wp_clear_scheduled_hook("my_schedule_hook"); 
} 

Change the my_schedule_hook to cron’s hook name and add the code in your theme’s function.php file.

Answer 2

You can delete scheduled cron jobs via a SSH command line. First, take a look at all your active and scheduled cron jobs by doing this command:

$ wp cron event list

Then you can delete any of the cron jobs by using their hook name. Let's say you have six jobs whose hook name is "crontrol_cron_job". You would run this command:

$ wp cron event delete crontrol_cron_job

You'll get a result of something like:

Deleted 6 instances of the cron event 'crontrol_cron_job'.