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Good morning!
wp-cron is run from PHP CLI every half an hour.
Addidionally the “newsletter” event every 5 minutes from wp-cli:
/usr/local/bin/wp --quiet --url=http://www.***.hu/ --path=/home/***/public_pm2/server cron event run newsletterAfter one or two days the “newsletter” event disappears. Listing wp-cron events does not show it.
Where could it be deleted?Thank you.
> Check if wp cli has that event active.
What does it mean that wp cli has it event active?
This simply runs the “newsletter” event.
wp cron event run "newsletter"I do not understand.
Another user had problem with wp-cli and it told me he forgot to enable the newsletter event. I don’t know how wp cli works, anyway. The event should not disappear. Maybe another plugin is removing it? Try to install wp-control is a small plugin which shows the installed cron.
Thank you.
The thing is wp-cli a WP console tool. It is able to list events.
See: http://wp-cli.org/commands/cron/event/list/Do you have any code in your plugin that removes that event?
The plugin may remove the event only on deactivation. In the past there were a couple of user having the same problem. Try to check the server error log for php fatal errors or out of memory errors.
I only have suhosin alerts (a PHP extension for security) but it is disabled for CLI.
Do you think a PHP error could remove the event from the database?Crons are not on database are runtime rescheduled by plugins. A fatal error while executing a cron or an out of memory can block wordpress to reschedule a periodic cron. Actually only debugging wp while executing a cron can help in finding the problem…
You just mentioned
Crons are not on database are runtime rescheduled by plugins.
and I’ve missunderstood as “Crons anre not on database. (period)” But they are.
Now I understand that WP core fails to reschedule them:A fatal error while executing a cron or an out of memory can block wordpress to reschedule a periodic cron.
Do you mean by “an out of memory can block wordpress to reschedule a periodic cron” that a not-rescheduled cron will disappear from the database?
I think it will stay sceduled for a time in the past. The entry itself won’t be deleted.WordPress put into the database the next time and event (for example “newsletter” should be fired). When it fires it, since the event has a periodicity, it reschedule the event. WP has default intervals available (daily, hourly, …) and Newsletter adds it’s own.
This information is not on database, when the plugin is active it adds its interval to the list of the intervals listening to a filter. If this interval is not added (maybe activating the cron from “cli” does not let the plugin to load completely (I don’t know), WP may fail to reschedule the event. As far as I know, wordpress tries to guess when to reschedule it even if the interval definition is missing, using some event information… to find out the bug one should log what happens in the wp-cron.php and related function when the event is rescheduled.
If someone is loking for a workaround
#!/bin/bash # # Keep sending newsletters. Restore schedule if missing. export WP_CLI_CONFIG_PATH="/home/***/public_pm2/wp-cli.yml" if ! /usr/local/bin/wp --quiet cron event run newsletter \ && ! /usr/local/bin/wp eval "wp_schedule_event(time() + 5*60, 'newsletter', 'newsletter');"; then echo "cron-newsletter ERROR." >&2 exit 1 fiIf someone is looking for a workaround.
#!/bin/bash # # Keep sending newsletters. Restore schedule if missing. export WP_CLI_CONFIG_PATH="/home/user/public_pm2/wp-cli.yml" if ! /usr/local/bin/wp --quiet cron event run newsletter \ && ! /usr/local/bin/wp eval "wp_schedule_event(time() + 5*60, 'newsletter', 'newsletter');"; then echo "cron-newsletter ERROR." >&2 exit 1 fi
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