ModifyScheduledTask - Auto Scaling - Alibaba Cloud Documentation Center

Modifies a scheduled task. If an existing scheduled task cannot meet your business requirements anymore, you can call the ModifyScheduledTask operation to modify the task attributes such as the scaling rule to execute, the recurrence of the scheduled task, and the retry policy, without the need to create a new task.

Usage notes

Scheduled tasks support the following scaling methods:

ScheduledAction: Specify an existing scaling rule that you want Auto Scaling to execute when the scheduled task is triggered.
ScalingGroupId: Specify the minimum number, maximum number, or expected number of instances for the scaling group to which the scheduled task belongs.

Note

You cannot specify both ScheduledAction and ScalingGroupId.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter	Type	Required	Example	Description
Action	String	Yes	ModifyScheduledTask	The operation that you want to perform. Set the value to ModifyScheduledTask.
ScheduledTaskId	String	Yes	edRtShc57WGXdt8TlPbr****	The ID of the scheduled task.
ScheduledTaskName	String	No	scheduled****	The name of the scheduled task. The name of a scheduled task must be 2 to 64 characters in length and can contain letters, digits, periods (.), underscores (_), and hyphens (-). The name must start with a letter or a digit. The name of each scheduled task must be unique in a region and within an Alibaba Cloud account.
Description	String	No	Test scheduled task.	The description of the scheduled task. The description can be 1 to 200 characters in length.
ScheduledAction	String	No	ari:acs:ess:cn-hangzhou:14069264**:scalingrule/asr-bp12tcnol686y1ik**	The ID of the scaling group that Auto Scaling executes when the scheduled task is triggered. You can obtain the ID of a scaling rule on the scaling rule details page. This parameter is available only if you specify ScheduledAction. Note If you specify `ScheduledAction`, you cannot specify `ScalingGroupId`.
RecurrenceEndTime	String	No	2014-08-20T16:55Z	The end time of the scheduled task. Specify the time in the ISO 8601 standard in the YYYY-MM-DDThh:mmZ format. The time must be in UTC. You cannot specify a point in time that is later than 365 days from the point in time at which the scheduled task is modified.
LaunchTime	String	No	2014-08-18T10:52Z	The point in time at which the scheduled task is executed. Specify the time in the ISO 8601 standard in the YYYY-MM-DDThh:mmZ format. The time must be in UTC. You cannot specify a time point that is later than 90 days from the point in time at which the scheduled task is modified. If you specify `RecurrenceType`, the scheduled task is repeatedly executed at the point in time that is specified by LaunchTime. If you do not specify `RecurrenceType`, the scheduled task is executed only once at the time point that is specified by LaunchTime.
RecurrenceType	String	No	Daily	The type of the recurring execution cycle of the scheduled task. The scheduled task can be executed by day, week, or month. Valid values: Daily: The scheduled task is repeatedly executed every specified number of days. Weekly: The scheduled task is executed on each specified day of a week. Monthly: The scheduled task is executed on each specified day of a month. Cron: The scheduled task is executed based on the specified cron expression. Make sure that the values that you specify for `RecurrenceType` and `RecurrenceValue` must be valid at the same time after you modify the scheduled task.
RecurrenceValue	String	No	2	The numerical value that corresponds to the recurring execution cycle of the scheduled task. If you set `RecurrenceType` to `Daily`, you can specify only one value for this parameter. Valid values: 1 to 31. If you set `RecurrenceType` to `Weekly`, you can specify multiple values for this parameter. Separate the values with commas (,). For example, the values that correspond to Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, and Saturday are 0, 1, 2, 3, 4, 5, and 6. If you set `RecurrenceType` to `Monthly`, you can specify two values in the `A-B` format. Valid values of A and B: 1 to 31. B must be greater than or equal to A. If you set `RecurrenceType` to `Cron`, you can specify a cron expression. A cron expression is written in UTC time and consists of the following fields: minute, hour, day, month, and week. The expression can contain the letters L and W and the following wildcard characters: commas (,), question marks (?), hyphens (-), asterisks (*), number signs (#), and forward slashes (/). Make sure that the values that you specify for `RecurrenceType` and `RecurrenceValue` must be valid at the same time after you modify the scheduled task.
TaskEnabled	Boolean	No	true	Specifies whether the scheduled task is enabled. Valid values: true false Default value: true.
LaunchExpirationTime	Integer	No	600	The duration within which Auto Scaling can retry the execution of the scheduled task in case of failures. Unit: seconds. Valid values: 0 to 1800. Default value: 600.
MinValue	Integer	No	0	The minimum number of instances that must be maintained in the scaling group. This parameter is available only if you specify ScalingGroupId.
MaxValue	Integer	No	10	The maximum number of instances that can be contained in the scaling group. This parameter is available only if you specify ScalingGroupId.
DesiredCapacity	Integer	No	10	The expected number of instances in the scaling group. This parameter is available only if you specify ScalingGroupId. Note This parameter takes effect only if you specify `DesiredCapacity` when you create the scaling group.
ScalingGroupId	String	No	asg-bp18p2yfxow2dloq****	The ID of the scaling group whose scheduled task that you want to modify. If you specify `ScalingGroupId`, you must also specify one of the following parameters: `MinValue`, `MaxValue`, and `DesiredCapacity`. Note If you specify `ScalingGroupId`, you cannot specify `ScheduledAction`.
RegionId	String	No	cn-hangzhou	The region ID of the scaling group.

Response parameters

Parameter	Type	Example	Description
RequestId	String	473469C7-AA6F-4DC5-B3DB-A3DC0DE3****	The request ID.

Examples

Sample requests

http(s)://ess.aliyuncs.com/?Action=ModifyScheduledTask
&ScheduledTaskId=edRtShc57WGXdt8TlPbr****
&ScheduledTaskName=scheduled****
&Description=Test scheduled task.
&ScheduledAction=ari:acs:ess:cn-hangzhou:14069264****:scalingrule/asr-bp12tcnol686y1ik****
&RecurrenceEndTime=2014-08-20T16:55Z
&LaunchTime=2014-08-18T10:52Z
&RecurrenceType=Daily
&RecurrenceValue=2
&TaskEnabled=true
&LaunchExpirationTime=600
&MinValue=0
&MaxValue=10
&DesiredCapacity=10
&ScalingGroupId=asg-bp18p2yfxow2dloq****
&RegionId=cn-hangzhou
&<Common request parameters>

Sample success responses

XML format

HTTP/1.1 200 OK
Content-Type:application/xml

<ModifyScheduledTaskResponse>
    <RequestId>473469C7-AA6F-4DC5-B3DB-A3DC0DE3****</RequestId>
</ModifyScheduledTaskResponse>

JSON format

HTTP/1.1 200 OK
Content-Type:application/json

{
  "RequestId" : "473469C7-AA6F-4DC5-B3DB-A3DC0DE3****"
}

Error codes

For a list of error codes, see Service error codes.

HTTP status code	Error code	Error message	Description
404	InvalidScheduledTaskId.NotFound	The specified scheduled task does not exist.	The specified scheduled task does not exist within the Alibaba Cloud account.
400	InvalidScheduledTaskName.Duplicate	The specified value of parameter `ScheduledTaskName` is duplicated.	A scheduled task with the given name already exists.
400	ScheduledAction.RegionMismatch	The specified scheduled task and the specified scheduled action are not in the same Region.	The specified scaling rule and the specified scheduled task are located in different regions.