Auto Scaling (AS)

IAM provides common system-defined identity policies for services. You can also create custom identity policies using the actions supported by cloud services for more refined access control.

In addition to IAM, the Organizations service provides Service Control Policies (SCPs) to set access control policies.

SCPs do not actually grant any permissions to a principal. They only set the permissions boundary for the principal. When SCPs are attached to a member account or an organizational unit (OU), they do not directly grant permissions to that member account or OU. Instead, the SCPs just determine what permissions are available for that member account or the member accounts under that OU. The granted permissions can be applied only if they are allowed by the SCPs.

To learn more about how IAM is different from Organizations for access control, see What Are the Differences in Access Control Between IAM and Organizations?.

This section describes the elements used by IAM custom identity policies and Organizations SCPs. The elements include actions, resources, and conditions.

For details about how to use these elements to create an IAM custom identity policy, see Creating a Custom Identity Policy.
For details about how to use these elements to create a custom SCP, see Creating an SCP.

Actions

Actions are specific operations that are allowed or denied in an identity policy.

The Access Level column describes how the action is classified (List, Read, or Write). This classification helps you understand the level of access that an action grants when you use it in an identity policy.
The Resource Type column indicates whether the action supports resource-level permissions.
- You can use a wildcard (*) to indicate all resource types. If this column is empty (-), the action does not support resource-level permissions and you must specify all resources ("*") in your identity policy statements.
- If this column includes a resource type, you must specify a URN in the Resource element of your statements.
- Required resources are marked with asterisks (*) in the table. If you specify a resource in a statement using this action, then it must be of this type.
For details about the resource types defined by AS, see Resources.
The Condition Key column contains keys that you can specify in the Condition element of an identity policy statement.
- If the Resource Type column has values for an action, the condition key takes effect only for the listed resource types.
- If the Resource Type column is empty (-) for an action, the condition key takes effect for all resources that action supports.
- If the Condition Key column of an action is empty (-), the action does not support any condition keys.
For details about the condition keys defined by AS, see Conditions.
The Alias column lists the policy actions that are configured in identity policies. With these actions, you can use APIs for policy-based authorization. For details, see Policies and Identity Policies.

The following table lists the actions that you can define in identity policy statements for AS.

**Table 1** Actions supported by AS
Action	Description	Access Level	Resource Type (*: required)	Condition Key	Alias
as:scalingGroup:create	Grants permission to create an AS group.	write	-	g:EnterpriseProjectId g:ResourceTag/<tag-key> g:TagKeys as:ScalingConfigId as:VpcId as:VpcSubnetId as:ElbPoolId as:MaxInstanceSize as:MinInstanceSize	as:groups:create
as:scalingGroup:delete	Grants permission to delete an AS group.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:groups:delete
as:scalingGroup:list	Grants permission to list AS groups.	list	-	g:EnterpriseProjectId	as:groups:list
as:scalingGroup:get	Grants permission to query AS group details.	read	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:groups:get
as:scalingGroup:update	Grants permission to modify an AS group.	write	-	g:EnterpriseProjectId as:ScalingConfigId as:VpcSubnetId as:ElbPoolId as:MaxInstanceSize as:MinInstanceSize	as:groups:update
as:scalingGroup:resume	Grants permission to enable an AS group.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:groups:action
as:scalingGroup:pause	Grants permission to disable an AS group.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:groups:action
as:scalingConfig:create	Grants permission to create an AS configuration.	write	-	as:EcsInstanceId as:EcsInstanceType as:EcsFlavorId as:ImageId as:ImsDiskImageId as:CbrDiskSnapshotId as:EcsServerGroupId as:EvsEncrypted as:KmsKeyId as:EvsVolumeType as:KpsSSHKeyPairName as:AssociatePublicIp	as:configs:create
as:scalingConfig:delete	Grants permission to delete an AS configuration.	write	scalingConfig*	-	as:configs:delete
as:scalingConfig:batchDelete	Grants permission to delete AS configurations.	write	scalingConfig*	-	as:configs:batchDelete
as:scalingConfig:list	Grants permission to list AS configurations.	list	scalingConfig*	-	as:configs:list
as:scalingConfig:get	Grants permission to query AS configuration details.	read	scalingConfig*	-	as:configs:get
as:scalingGroup:batchAddInstances	Grants permission to add instances to an AS group.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:instances:batchAction
as:scalingGroup:batchRemoveInstances	Grants permission to delete instances from an AS group.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:instances:batchAction
as:scalingGroup:batchSetInstancesProtect	Grants permission to enable instance protection for instances.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:instances:batchAction
as:scalingGroup:batchSetInstancesUnprotect	Grants permission to disable instance protection for instances.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:instances:batchAction
as:scalingGroup:batchSetInstancesStandby	Grants permission to put instances into the standby status.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:instances:batchAction
as:scalingGroup:batchSetInstancesExitStandby	Grants permission to move instances out of the standby status.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:instances:batchAction
as:scalingGroup:deleteInstance	Grants permission to delete instances from an AS group.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:instances:delete
as:scalingGroup:listInstances	Grants permission to list instances in an AS group.	list	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:instances:list
as:scalingPolicy:create	Grants permission to create an AS policy.	write	-	g:EnterpriseProjectId	as:policies:create
as:scalingPolicy:list	Grants permission to list AS policies.	list	-	g:EnterpriseProjectId	as:policies:list
as:scalingPolicy:get	Grants permission to query AS policy details.	read	scalingPolicy*	g:EnterpriseProjectId	as:policies:get
as:scalingPolicy:update	Grants permission to modify an AS policy.	write	-	g:EnterpriseProjectId	as:policies:update
as:scalingPolicy:delete	Grants permission to delete an AS policy.	write	scalingPolicy*	g:EnterpriseProjectId	as:policies:delete
as:scalingPolicy:execute	Grants permission to execute an AS policy.	write	scalingPolicy*	g:EnterpriseProjectId	as:policies:action
as:scalingPolicy:resume	Grants permission to enable an AS policy.	write	scalingPolicy*	g:EnterpriseProjectId	as:policies:action
as:scalingPolicy:pause	Grants permission to disable an AS policy.	write	scalingPolicy*	g:EnterpriseProjectId	as:policies:action
as:scalingPolicy:batchPause	Grants permission to disable AS policies.	write	scalingPolicy*	g:EnterpriseProjectId	as:policies:batchAction
as:scalingPolicy:batchResume	Grants permission to enable AS policies.	write	scalingPolicy*	g:EnterpriseProjectId	as:policies:batchAction
as:scalingPolicy:batchDelete	Grants permission to delete AS policies.	write	scalingPolicy*	g:EnterpriseProjectId	as:policies:batchAction
as:scalingPolicy:listAll	Grants permission to list AS policies of a tenant.	list	-	g:EnterpriseProjectId	as:policies:list
as:scalingGroup:listActivityLogs	Grants permission to query scaling action logs.	list	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:acivityLogs:list
as:scalingPolicy:listExecuteLogs	Grants permission to query AS policy execution logs.	list	scalingPolicy*	g:EnterpriseProjectId	as:policyExecuteLogs:list
as::tagResource	Grants permission to add tags.	tagging	-	g:EnterpriseProjectId g:ResourceTag/<tag-key> g:TagKeys	as:tags:set
as::untagResource	Grants permission to delete tags.	tagging	-	g:EnterpriseProjectId g:ResourceTag/<tag-key> g:TagKeys	as:tags:set
as::listTags	Grants permission to query tags of all resources.	list	-	-	as:tags:list
as::listTagsForResource	Grants permission to query tags of a resource.	list	-	g:EnterpriseProjectId	as:tags:get
as::listResourcesByTag	Grants permission to query resources by tag.	list	-	g:ResourceTag/<tag-key> g:TagKeys	as:tagResources:list
as:scalingGroup:createLifecycleHook	Grants permission to create a lifecycle hook.	write	-	g:EnterpriseProjectId	as:lifecycleHooks:create
as:scalingGroup:listLifecycleHooks	Grants permission to list lifecycle hooks.	list	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:lifecycleHooks:list
as:scalingGroup:getLifecycleHook	Grants permission to query lifecycle hook details.	read	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:lifecycleHooks:get
as:scalingGroup:updateLifecycleHook	Grants permission to modify a lifecycle hook.	write	-	g:EnterpriseProjectId	as:lifecycleHooks:update
as:scalingGroup:deleteLifecycleHook	Grants permission to delete a lifecycle hook.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:lifecycleHooks:delete
as:scalingGroup:callbackInstanceHook	Grants permission to call back a lifecycle hook.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:instanceHooks:action
as:scalingGroup:listInstanceHooks	Grants permission to query suspended instances.	list	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:instanceHooks:list
as:scalingGroup:createNotification	Grants permission to create notifications.	write	scalingGroup*	g:EnterpriseProjectId	as:notifications:set
as:scalingGroup:listNotifications	Grants permission to query notifications.	list	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:notifications:list
as:scalingGroup:deleteNotification	Grants permission to delete notifications.	write	scalingGroup*	g:EnterpriseProjectId g:ResourceTag/<tag-key>	as:notifications:delete
as:scalingGroup:getQuotas	Grants permission to query instance and AS policy quotas.	read	-	g:EnterpriseProjectId	as:quotas:get
as::listQuotas	Grants permission to query instance and AS policy quotas.	read	-	-	as:quotas:get

Each API of AS usually supports one or more actions. Table 2 lists the supported actions and dependencies.

**Table 2** Actions and dependencies supported by AS APIs
API	Action	Dependencies
POST /autoscaling-api/v1/{project_id}/scaling_group	as:scalingGroup:create	-
DELETE /autoscaling-api/v1/{project_id}/scaling_group/{scaling_group_id}	as:scalingGroup:delete	-
GET /autoscaling-api/v1/{project_id}/scaling_group	as:scalingGroup:list	-
GET /autoscaling-api/v1/{project_id}/scaling_group/{scaling_group_id}	as:scalingGroup:get	-
PUT /autoscaling-api/v1/{project_id}/scaling_group/{scaling_group_id}	as:scalingGroup:update	-
POST /autoscaling-api/v1/{project_id}/scaling_group/{scaling_group_id}/action	as:scalingGroup:resume	-
POST /autoscaling-api/v1/{project_id}/scaling_group/{scaling_group_id}/action	as:scalingGroup:pause	-
POST /autoscaling-api/v1/{project_id}/scaling_configurationCreateScalingConfig	as:scalingConfig:create	-
DELETE /autoscaling-api/v1/{project_id}/scaling_configuration/{scaling_configuration_id}	as:scalingConfig:delete	-
POST /autoscaling-api/v1/{project_id}/scaling_configurations	as:scalingConfig:batchDelete	-
GET /autoscaling-api/v1/{project_id}/scaling_configuration	as:scalingConfig:list	-
GET /autoscaling-api/v1/{project_id}/scaling_configuration/{scaling_configuration_id}	as:scalingConfig:get	-
POST /autoscaling-api/v1/{project_id}/scaling_group_instance/{scaling_group_id}/action	as:scalingGroup:batchAddInstances as:scalingGroup:batchSetInstancesProtect as:scalingGroup:batchRemoveInstances as:scalingGroup:batchSetInstancesStandby as:scalingGroup:batchSetInstancesUnprotect as:scalingGroup:batchSetInstancesExitStandby	-
DELETE /autoscaling-api/v1/{project_id}/scaling_group_instance/{instance_id}	as:scalingGroup:deleteInstance	-
GET /autoscaling-api/v1/{project_id}/scaling_group_instance/{scaling_group_id}/list	as:scalingGroup:listInstances	-
POST /autoscaling-api/v1/{project_id}/scaling_policy	as:scalingPolicy:create	-
GET /autoscaling-api/v1/{project_id}/scaling_policy/{scaling_group_id}/list	as:scalingPolicy:list	-
GET /autoscaling-api/v1/{project_id}/scaling_policy/{scaling_policy_id}	as:scalingPolicy:get	-
PUT /autoscaling-api/v1/{project_id}/scaling_policy/{scaling_policy_id}	as:scalingPolicy:update	-
DELETE /autoscaling-api/v1/{project_id}/scaling_policy/{scaling_policy_id}	as:scalingPolicy:delete	-
POST /autoscaling-api/v1/{project_id}/scaling_policy/{scaling_policy_id}/action	as:scalingPolicy:resume as:scalingPolicy:pause as:scalingPolicy:execute	-
POST /autoscaling-api/v1/{project_id}/scaling_policies/action	as:scalingPolicy:batchDelete as:scalingPolicy:batchPause as:scalingPolicy:batchResume	-
POST /autoscaling-api/v2/{project_id}/scaling_policy	as:scalingPolicy:create	-
GET /autoscaling-api/v2/{project_id}/scaling_policy	as:scalingPolicy:listAll	-
GET /autoscaling-api/v2/{project_id}/scaling_policy/{scaling_resource_id}/list	as:scalingPolicy:list	-
GET /autoscaling-api/v2/{project_id}/scaling_policy/{scaling_policy_id}	as:scalingPolicy:get	-
PUT /autoscaling-api/v2/{project_id}/scaling_policy/{scaling_policy_id}	as:scalingPolicy:update	-
GET /autoscaling-api/v1/{project_id}/scaling_activity_log/{scaling_group_id}	as:scalingGroup:listActivityLogs	-
GET /autoscaling-api/v2/{project_id}/scaling_activity_log/{scaling_group_id}	as:scalingGroup:listActivityLogs	-
GET /autoscaling-api/v1/{project_id}/scaling_policy_execute_log/{scaling_policy_id}	as:scalingPolicy:listExecuteLogs	-
POST /autoscaling-api/v1/{project_id}/{resource_type}/{resource_id}/tags/action	as::tagResource	-
POST /autoscaling-api/v1/{project_id}/{resource_type}/{resource_id}/tags/action	as::untagResource	-
GET /autoscaling-api/v1/{project_id}/{resource_type}/tags	as::listTags	-
GET /autoscaling-api/v1/{project_id}/{resource_type}/{resource_id}/tags	as::listTagsForResource	-
POST /autoscaling-api/v1/{project_id}/{resource_type}/resource_instances/action	as::listResourcesByTag	-
POST /autoscaling-api/v1/{project_id}/scaling_lifecycle_hook/{scaling_group_id}	as:scalingGroup:createLifecycleHook	-
GET /autoscaling-api/v1/{project_id}/scaling_lifecycle_hook/{scaling_group_id}/list	as:scalingGroup:listLifecycleHooks	-
GET /autoscaling-api/v1/{project_id}/scaling_lifecycle_hook/{scaling_group_id}/{lifecycle_hook_name}	as:scalingGroup:getLifecycleHook	-
PUT /autoscaling-api/v1/{project_id}/scaling_lifecycle_hook/{scaling_group_id}/{lifecycle_hook_name}	as:scalingGroup:updateLifecycleHook	-
DELETE /autoscaling-api/v1/{project_id}/scaling_lifecycle_hook/{scaling_group_id}/{lifecycle_hook_name}	as:scalingGroup:deleteLifecycleHook	-
PUT /autoscaling-api/v1/{project_id}/scaling_instance_hook/{scaling_group_id}/callback	as:scalingGroup:callbackInstanceHook	-
GET /autoscaling-api/v1/{project_id}/scaling_instance_hook/{scaling_group_id}/list	as:scalingGroup:listInstanceHooks	-
PUT /autoscaling-api/v1/{project_id}/scaling_notification/{scaling_group_id}	as:scalingGroup:createNotification	-
DELETE /autoscaling-api/v1/{project_id}/scaling_notification/{scaling_group_id}/{topic_urn}	as:scalingGroup:deleteNotification	-
GET /autoscaling-api/v1/{project_id}/scaling_notification/{scaling_group_id}	as:scalingGroup:listNotifications	-
GET /autoscaling-api/v1/{project_id}/quotas/{scaling_group_id}	as:scalingGroup:getQuotas	-
GET /autoscaling-api/v1/{project_id}/quotas	as::listQuotas	-

Resources

A resource type indicates the resources that an identity policy applies to. If you specify a resource type for any action in Table 3, the resource URN must be specified in the identity policy statements using that action, and the identity policy applies only to resources of this type. If no resource type is specified, the Resource element is marked with an asterisk (*) and the identity policy applies to all resources. You can also set condition keys in an identity policy to define resource types.

The following table lists the resource types that you can specify in identity policy statements for AS.

**Table 3** Resource types supported by AS
Resource Type	URN
scalingGroup	as:<region>:<account-id>:scalingGroup:<scaling-group-id>
scalingConfig	as:<region>:<account-id>:scalingConfig:<scaling-config-id>
scalingPolicy	as:<region>:<account-id>:scalingPolicy:<scaling-policy-id>

Conditions

A Condition element lets you specify conditions for when an identity policy is in effect. It contains condition keys and operators.

The condition key that you specify can be a global condition key or a service-specific condition key.
- Global condition keys (with the g: prefix) apply to all actions. Cloud services do not need to provide user identity information. Instead, the system automatically obtains such information and authenticates users. For details, see Global Condition Keys.
- Service-specific condition keys (with the abbreviation of a service name plus a colon as the prefix, for example, as:) only apply to operations of the AS service. For details, see Table 4.
- The number of values associated with a condition key in the request context of an API call makes the condition key single-valued or multivalued. Single-valued condition keys have at most one value in the request context of an API call. Multivalued condition keys can have multiple values in the request context of an API call. For example, a request can originate from at most one VPC endpoint, so g:SourceVpce is a single-valued condition key. You can tag resources and include multiple tag key-value pairs in a request, so g:TagKeys is a multivalued condition key.
A condition operator, condition key, and a condition value together constitute a complete condition statement. An identity policy can be applied only when its request conditions are met. For supported condition operators, see Condition operators.

The following table lists the condition keys that you can define in identity policies for AS. You can include these condition keys to specify conditions for when your identity policy is in effect.

**Table 4** Service-specific condition keys supported by AS
Service-specific Condition Key	Type	Single-valued/Multivalued	Description
as:ScalingConfigId	String	Single-valued	Filters access by AS configuration ID.
as:VpcId	String	Single-valued	Filters access by VPC ID.
as:VpcSubnetId	String	Multivalued	Filters access by subnet ID.
as:ElbPoolId	String	Multivalued	Filters access by ELB backend server group ID.
as:MaxInstanceSize	Integer	Single-valued	Filters access by the maximum number of instances in an AS group.
as:MinInstanceSize	Integer	Single-valued	Filters access by the minimum number of instances in an AS group.
as:EcsInstanceId	String	Single-valued	Filters access by the ECS ID used for AS configuration creation.
as:EcsInstanceType	String	Single-valued	Filters access by the spot or pay-per-use billing mode.
as:EcsFlavorId	String	Multivalued	Filters access by the flavor ID used for ECS creation.
as:ImageId	String	Single-valued	Filters access by the image ID used for ECS creation.
as:ImsDiskImageId	String	Multivalued	Filters access by the disk image ID used for ECS creation.
as:CbrDiskSnapshotId	String	Multivalued	Filters access by the disk backup ID used for ECS creation.
as:EcsServerGroupId	String	Single-valued	Filters access by the ECS group ID used for ECS creation.
as:EvsEncrypted	Boolean	Single-valued	Filters access based on whether disk encryption is enabled.
as:KmsKeyId	String	Multivalued	Filters access by the key ID used for disk encryption.
as:EvsVolumeType	String	Multivalued	Filters access by the disk type used for ECS creation.
as:KpsSSHKeyPairName	String	Single-valued	Filters access by the key pair name used for ECS creation.
as:AssociatePublicIp	Boolean	Single-valued	Filters access based on whether auto EIP assignment is enabled.