The cron expression for monitoring schedule - Amazon SageMaker AI

The cron expression for monitoring schedule

To provide details for the monitoring schedule, use ScheduleConfig, which is a cron expression that describes details about the monitoring schedule.

Amazon SageMaker Model Monitor supports the following cron expressions:

  • To set the job to start every hour, use the following:

    Hourly: cron(0 * ? * * *)

  • To run the job daily, use the following:

    cron(0 [00-23] ? * * *)

  • The run the job one time, immediately, use the following keyword:

    NOW

For example, the following are valid cron expressions:

  • Daily at 12 PM UTC: cron(0 12 ? * * *)

  • Daily at 12 AM UTC: cron(0 0 ? * * *)

To support running every 6, 12 hours, Model Monitor supports the following expression:

cron(0 [00-23]/[01-24] ? * * *)

For example, the following are valid cron expressions:

  • Every 12 hours, starting at 5 PM UTC: cron(0 17/12 ? * * *)

  • Every two hours, starting at 12 AM UTC: cron(0 0/2 ? * * *)

Notes

  • Although the cron expression is set to start at 5 PM UTC, note that there could be a delay of 0-20 minutes from the actual requested time to run the execution.

  • If you want to run on a daily schedule, don't provide this parameter. SageMaker AI picks a time to run every day.

  • Currently, SageMaker AI only supports hourly integer rates between 1 hour and 24 hours.