CRON Tasks

Owned by Philippe JASPARD
Last updated: Oct 20, 2020 by Guillaume LEROUVREUR

CRON tasks are configurations that publish task automatically, according to the CRON expression.

CRON Expression

CRON expression allows an administrator to build powerful scheduling system. For a tutorial about CRON expressions, you can visit this site.

1) Task Creation

CRON tasks can be created from the publication menu on the devices list

  • CRON Expression : A valid cron expression, without the cron parameter for the second (0 12 ? * SUN means every sunday at noon)
  • Occurrence validity : The maximum delay for the target devices to receive the task. The task becomes obsolete at the end of this delay. Any remaining devices that are too late will not process the task
  • Publication start date : How frequent will the CRON task will be pushed on the target devices from the publication start date.
  • publication stop date : The date from when no more occurrence will be published for this task
  • Application field : The devices group that contains the target devices of the recurring task

CRON tasks behavior

CRON tasks needs to be created only once. After their creation, they will automatically publish the specified task on the target devices. They will do so until that the publication stop date is reached.

2) Task View and Edition

a) Consult the current CRON tasks

CRON tasks can be deleted and modified from the Reccuring task menu in the Library section.

Deleting a CRON task

When a CRON task is deleted, all current occurrences are stopped directly.

b) Edit a CRON task

Click on the Edit button will open the task edition Dialog.

  • Task templates : The task that is published at each occurrence
  • CRON Expression : A valid cron expression, without the cron parameter for the second (0 12 ? * SUN means every sunday at noon)
  • Occurrence validity : The maximum delay for the target devices to receive the task. The task becomes obsolete at the end of this delay. Any remaining devices that are too late will not process the task
  • Publication stop date : The date from when no more occurrence will be published for this task
  • Activation state : This is an option to enable or disable the task. When a task is disabled, no more occurrence will be published, and any current occurrence will be stopped.