Create a scheduled action

To create a scheduled action

1. Open the Amazon EC2 console at https://console.amazonaws.cn/ec2/, and choose Auto Scaling Groups from the navigation pane.

2. Select the check box next to your Auto Scaling group.

   A split pane opens up in the bottom of the page.

3. On the Automatic scaling tab, in Scheduled actions, choose Create scheduled action.

4. Enter a Name for the scheduled action.

5. For Desired capacity, Min, Max, choose the new desired capacity of the group and the new minimum and maximum size limits. The desired capacity must be equal to or greater than the minimum group size, and equal to or less than the maximum group size.

6. For Recurrence, choose one of the available options.

   • If you want to scale on a recurring schedule, choose how often Amazon EC2 Auto Scaling should run the scheduled action.

     • If you choose an option that begins with Every, the cron expression is created for you.

     • If you choose Cron, enter a cron expression that specifies when to perform the action.

   • If you want to scale only once, choose Once.

7. For Time zone, choose a time zone. The default is Etc/UTC.

   All of the time zones listed are from the IANA Time Zone database. For more information, see https://en.wikipedia.org/wiki/List_of_tz_database_time_zones.

8. Define a date and time for Specific start time.

   • If you chose a recurring schedule, the start time defines when the first scheduled action in the recurring series runs.

   • If you chose Once as the recurrence, the start time defines the date and time for the schedule action to run.

9. (Optional) For recurring schedules, you can specify an end time by choosing Set End Time and then choosing a date and time for End by.

10. Choose Create. The console displays the scheduled actions for the Auto Scaling group.