Stop a Drupal cron process once it has started

If you are testing a Cron functionality or your Cron is stuck, there is a simple way to stop it.

If you have Drush installed:

$ drush vdel cron_semaphore
$ drush vdel cron_last

Running SQL queries

DELETE FROM `variable` WHERE name = 'cron_semaphore';
DELETE FROM `variable` WHERE name = 'cron_last';

If you have a Cron wrapper module like Elysia Cron you'll need to lookup in "elysia_cron" table and delete desired Cron process:

DELETE from elysia_cron where name='your_cron_process_name';