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  1. Moodle
  2. MDL-65229

Allow cron cli option to remotely stop all crons

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    • MOODLE_39_STABLE
    • MOODLE_39_STABLE
    • MDL-65229-stop-cron
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      1) Install this to make testing easier:

      https://github.com/catalyst/moodle-tool_testtasks

      2) Run cronhelp to see new option:

      php admin/cli/cron.php -h

      3) In terminal 1 run cron:

      php admin/cli/cron.php

      4) In terminal 2 after a couple seconds remotely kill all crons:

      php admin/cli/cron.php --stop

      5) Repeat using ad hoc tasks. In terminal 1:

      Queue up some tasks

      php admin/tool/testtasks/cli/queue_adhoc_tasks.php -d=1 -n=20

      Now run them:

      php admin/tool/task/cli/adhoc_task.php --execute 

      6) In terminal 2 wait a few seconds and then kill it remotely:

      php admin/cli/cron.php --stop

       

      Show
      1) Install this to make testing easier: https://github.com/catalyst/moodle-tool_testtasks 2) Run cronhelp to see new option: php admin/cli/cron.php -h 3) In terminal 1 run cron: php admin/cli/cron.php 4) In terminal 2 after a couple seconds remotely kill all crons: php admin/cli/cron.php --stop 5) Repeat using ad hoc tasks. In terminal 1: Queue up some tasks php admin/tool/testtasks/cli/queue_adhoc_tasks.php -d=1 -n=20 Now run them: php admin/tool/task/cli/adhoc_task.php --execute  6) In terminal 2 wait a few seconds and then kill it remotely: php admin/cli/cron.php --stop  

    Description

      We now have the ability to throttle cron process run time since MDL-64347.

      These settings are only honored between runs of scheduled tasks in the cronlib, but some heavy tasks can still take many many hours (> 24 hours on big sites). Most of these scheduled tasks are processing some sort of large queue and it should also be able check whether it should continue between queue items.

      The end game here is to eventually allow much fast clean exiting of cron when doing a new release, and this should be much simpler and a less contentious than MDL-57852

      Then exiting gracefully via SIGTERM could be built on top of this MDL-59594 

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              brendanheywood Brendan Heywood
              brendanheywood Brendan Heywood
              Matt Porritt Matt Porritt
              Andrew Lyons Andrew Lyons
              Janelle Barcega Janelle Barcega
              Andrew Lyons, Huong Nguyen, Jun Pataleta, Michael Hawkins, Shamim Rezaie, Simey Lameze, Matteo Scaramuccia, Andrew Lyons, Huong Nguyen, Jun Pataleta, Michael Hawkins, Shamim Rezaie, Simey Lameze, Amaia Anabitarte, Carlos Escobedo, Ferran Recio, Ilya Tregubov, Laurent David, Sara Arjona (@sarjona)
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              Dates

                Created:
                Updated:
                Resolved:
                15/Jun/20

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