Puts or removes Elastic Compute Service (ECS) instances into or from the Protected state. After you put an ECS instance into the Protected state, the ECS instance will not be stopped or released when a scale-in event is triggered. In this case, you can manually delete the ECS instance in the Auto Scaling console or by calling the RemoveInstances operation.
Operation description
Once ECS instances enter the Protected state, they become subject to the following restrictions:
- ECS instances will persist in the Protected state, unless you deliberately remove them from this state.
- Even in scenarios where automatic scale-in actions are initiated due to fluctuations in the number of ECS instances or the execution of event-triggered tasks, Auto Scaling does not remove ECS instances that are in the Protected state from their respective scaling groups. Only after being manually removed from their respective scaling groups can ECS instances that are in the Protected state be released. For more information, see Remove an ECS instance.
- ECS instances in the Protected state maintain their health status even when they undergo stopping or restarting processes.
Debugging
Authorization information
The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:
- Operation: the value that you can use in the Action element to specify the operation on a resource.
- Access level: the access level of each operation. The levels are read, write, and list.
- Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level,
All Resourcesis used in the Resource type column of the operation.
- Condition Key: the condition key that is defined by the cloud service.
- Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
| Operation | Access level | Resource type | Condition key | Associated operation |
|---|---|---|---|---|
| ess:SetInstancesProtection | update | *All Resources * |
| none |
Request parameters
| Parameter | Type | Required | Description | Example |
|---|---|---|---|---|
| ScalingGroupId | string | Yes | The ID of the scaling group. | asg-bp18p2yfxow2dloq**** |
| ProtectedFromScaleIn | boolean | Yes | Specifies whether to protect ECS instances from being stopped or removed from the scaling group during scale-ins. Valid values:
| true |
| InstanceIds | array | Yes | The IDs of the ECS instances. | |
| string | Yes | The IDs of the ECS instances. | i-28wt4**** |
Response parameters
Examples
Sample success responses
JSONformat
{
"RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3****"
}Error codes
For a list of error codes, visit the Service error codes.
Change history
| Change time | Summary of changes | Operation |
|---|