Create an automatic snapshot policy with the CreateAutoSnapshotPolicy API - Elastic Compute Service - Alibaba Cloud - Elastic Compute Service

Creates an automatic snapshot policy in a specified region. You can specify the repetition cycle, retention period, and cross-region backup settings to create snapshot backups for system cloud disks or data cloud disks.

Operation description

Before calling this operation, read Create an automatic snapshot policy carefully.

When you call this operation, take note of the following items:

An Alibaba Cloud account can create up to 100 automatic snapshot policies in a region. If the number of automatic snapshots for a cloud disk reaches the quota limit, the system deletes the earliest automatic snapshot generated by the automatic snapshot policy when creating a new snapshot task.
The system does not execute the automatic snapshot policy when an ECS instance has a stop or restart task.
If cross-region snapshot replication is enabled and no encryption parameters are configured, encrypted snapshots are encrypted and copied by using the destination service key by default. For precautions about cross-region snapshot replication, refer to Copy a snapshot.

After creating an automatic snapshot policy, you must call ApplyAutoSnapshotPolicy to apply the policy to the target cloud disks. To modify the automatic snapshot policy, call ModifyAutoSnapshotPolicyEx.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

ecs:CreateAutoSnapshotPolicy

create

*AutoSnapshotPolicy

acs:ecs:{#regionId}:{#accountId}:snapshotpolicy/*

None

Request parameters

Parameter	Type	Required	Description	Example
regionId	string	Yes	The region to which the automatic snapshot policy belongs. You can call DescribeRegions to query the most recent region list.	cn-hangzhou
autoSnapshotPolicyName	string	No	The name of the automatic snapshot policy. The name must be 2 to 128 characters in length and must start with a letter or a Chinese character. It cannot start with http:// or https://. It can contain digits, colons (:), underscores (_), and hyphens (-). Default value: null.	TestName
timePoints	string	Yes	The points in time at which automatic snapshots are created. The time is in UTC+8 and measured in hours. Valid values: 0 to 23, which represent 24 points in time from 00:00 to 23:00. For example, 1 indicates 01:00. Format description: The parameter must be in JSON array format. For example, ["1"] indicates that automatic snapshots are created at 01:00. If you want to create multiple automatic snapshots in a day, you can specify multiple points in time separated by commas (,). You can specify up to 24 points in time. For example, ["1","3","5"] indicates that automatic snapshots are created at 01:00, 03:00, and 05:00. Note If the cloud disk contains a large amount of data and the time taken to create a single automatic snapshot exceeds the interval between two points in time, the system skips the next point in time. For example, if you set 09:00, 10:00, 11:00, and 12:00 as the points in time for automatic snapshots, and the snapshot creation starts at 09:00 and finishes at 10:20, taking 80 minutes, the system skips 10:00 and creates the next automatic snapshot at 11:00.	["0", "1", … "23"]
repeatWeekdays	string	Yes	The days of the week on which automatic snapshots are created. The unit is days and the cycle is weeks. Valid values: 1 to 7. For example, 1 indicates Monday. Format description: The parameter must be in JSON array format. For example, ["1"] indicates that automatic snapshots are created every Monday. If you want to create automatic snapshots multiple times a week, you can specify multiple days separated by commas (,). You can specify up to 7 days. For example, ["1","3","5"] indicates that automatic snapshots are created every Monday, Wednesday, and Friday.	["1","2"]
retentionDays	integer	Yes	The retention period of automatic snapshots. Unit: days. Valid values: -1: The snapshots are permanently retained. 1 to 65535: The specified number of days for which the snapshots are retained. Default value: -1.	30
EnableCrossRegionCopy	boolean	No	Specifies whether to enable automatic cross-region replication. Valid values: true: Enabled. false: Disabled.	false
TargetCopyRegions	string	No	The destination region for cross-region snapshot replication. You can specify only one destination region.	["cn-hangzhou"]
StorageLocationArn	string	No	Note This parameter is not available.	null
CopiedSnapshotsRetentionDays	integer	No	The retention period of cross-region replicated snapshots. Unit: days. Valid values: -1: The snapshots are permanently retained. 1 to 65535: The specified number of days for which the snapshots are retained. Default value: -1.	30
CopyEncryptionConfiguration	object	No	The backup encryption parameters for snapshot geo-redundancy.
Arn	array<object>	No	Note This parameter is not available.
	object	No
AssumeRoleFor	integer	No	Note This parameter is not available.	1000000000
RoleType	string	No	Note This parameter is not available.	hide
Rolearn	string	No	Note This parameter is not available.	hide
Encrypted	boolean	No	Specifies whether to enable encryption for cross-region snapshot backups. Valid values: true: Yes. false: No. Default value: false.	false
KMSKeyId	string	No	The KMS key ID used for snapshot geo-redundancy backup encryption.	0e478b7a-4262-4802-b8cb-00d3fb40826X
ResourceGroupId	string	No	The ID of the resource group.	rg-aek2kkmhmhs****
Tag	array<object>	No	The list of tags for the automatic snapshot policy.
	object	No
Key	string	No	The tag key of the automatic snapshot policy. Valid values of N: 1 to 20. If you specify this parameter, it cannot be an empty string. The tag key can be up to 128 characters in length. It cannot start with aliyun or acs: and cannot contain http:// or https://.	TestKey
Value	string	No	The tag value of the automatic snapshot policy. Valid values of N: 1 to 20. If you specify this parameter, it can be an empty string. The tag value can be up to 128 characters in length. It cannot start with acs: and cannot contain http:// or https://.	TestValue
AssociationType	string	No	The association type between the automatic snapshot policy and target resources. Valid values: AssociatedWithDisk: Associated with cloud disks. AssociatedWithInstanceTag: Associated with instance tags. Default value: AssociatedWithDisk.	AssociatedWithDisk
TargetTags	array<object>	No	The list of target resource tags. The automatic snapshot policy matches target resources based on tags. This parameter is required when `AssociationType` is set to `AssociatedWithInstanceTag`.
	object	No	The target resource tag.
Key	string	No	The tag key. Valid values of N: 1 to 5. If you specify this parameter, it cannot be an empty string. The tag key can be up to 128 characters in length. It cannot start with aliyun or acs: and cannot contain http:// or https://.	TestKey
Value	string	No	The tag value. Valid values of N: 1 to 5. The tag value can be up to 128 characters in length and cannot contain `http://` or `https://`. Note If you leave this parameter empty or specify an empty string, it indicates any value.	TestValue

Response elements

Element	Type	Description	Example
	object
AutoSnapshotPolicyId	string	The ID of the automatic snapshot policy.	sp-bp12m37ccmxvbmi5****
RequestId	string	The request ID.	473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

Examples

Success response

JSON format

{
  "AutoSnapshotPolicyId": "sp-bp12m37ccmxvbmi5****",
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E"
}

Error codes

HTTP status code	Error code	Error message	Description
400	DiskCategory.OperationNotSupported	The type of the specified disk does not support creating a snapshot.	The operation is not supported by the current disk category.
400	InvalidSnapshotPolicyName.Malformed	The specified autoSnapshotPolicyName is malformed.
400	Duplicate.TagKey	The parameter Tag.N.Key contains duplicate values. Please remove the duplicate tag keys and try again.
400	InvalidTagKey.Malformed	The specified Tag.n.Key is not valid.	The specified Tag.N.Key parameter is invalid.
400	InvalidTagValue.Malformed	The specified Tag.n.Value is not valid.	The specified tag value is invalid.
400	InvalidParameter.EncryptedIllegal	The Encrypted parameter must be set to true when KMSKeyId is specified. Please adjust the parameters and try again.
400	InvalidParameter.KmsNotEnabled	The operation failed because KMS is not activated. Please activate KMS in the KMS console and try again.
400	InvalidParameter.Encrypted.KmsNotEnable	The operation failed because KMS is not activated. Please activate KMS in the KMS console and try again.
400	InvalidParam.EncryptedMismatch	Creating a disk from a shared encrypted image requires encryption with your own KMS key. Please set the Encrypted parameter to true.
400	InvalidAssociationType.Malformed	The specified parameter AssociationType is invalid. Please check the valid range for this parameter.
400	MissingParameter.TargetTags	When the parameter AssociationType is set to AssociatedWithInstanceTag, the TargetTags parameter is required.
400	InvalidTargetTags.NotSupported	The TargetTags parameter is not supported when AssociationType is set to AssociatedWithDisk. Please remove TargetTags and try again.
400	InvalidTargetTagKey.Malformed	The specified TargetTag.n.Key [%s] is not valid.
400	InvalidTargetTagValue.Malformed	The specified TargetTag.n.Value [%s] is not valid.
400	Duplicate.TargetTagKey	Duplicate keys exist in the specified parameter TargetTags. Please ensure key uniqueness.
400	InvalidTargetTag.LimitExceed	The number [%s] of the specified parameter TargetTag exceeds the limit [%s].
403	ParameterInvalid	The specified RegionId parameter is invalid.	The specified region ID is invalid.
403	AutoSnapshotPolicy.QuotaExceed	The maximum number of automatic snapshot policy has been reached.
403	InvalidAccountStatus.NotEnoughBalance	Your account does not have enough balance.
403	InvalidAccountStatus.SnapshotServiceUnavailable	The snapshot service has not been activated. Please activate it and try again.
403	InvalidParameter.TargetCopyRegions	The specified TargetCopyRegions is invalid.
403	InvalidParameter.CopiedSnapshotsRetentionDays	The specified CopiedSnapshotsRetentionDays is invalid.
403	InvalidParameter.KMSKeyId.KMSUnauthorized	ECS service does not have permission to access your KMS key. Please verify that the specified KMS key has authorized the ECS service.
403	InvalidOperation.KMSKeyIdNotFound	The specified KMSKeyId does not exist. Please verify that the key ID is correct and that the key resides in the current region.
403	Abs.InvalidAction.RegionNotSupport	The current operation is not supported in the specified region. Please switch to a supported region and try again.
403	InvalidParameter.KMSKeyId.CMKNotEnabled	The specified KMS key must be in an enabled state. Please enable the key in the KMS console and try again.
403	InvalidParameter.KMSKeyId.CMKUnauthorized	The specified KMS key is not authorized for the ECS service. Please grant the ECS service permission to use the key in the KMS console and try again.
403	InvalidStorageLocationArn.Malformed	The specified parameter StorageLocationArn is malformed.
403	InvalidOperation.UserNotInWhiteList	The current user is temporarily unable to use this feature. Please submit a ticket for assistance.
403	InvalidOperation.CopyingDataToThisRegionUnsupported	Data transfer to the current region from other regions is not supported.	Data transfer to the current region from other regions is not supported.
404	InvalidResourceGroup.NotFound	The ResourceGroup provided does not exist in our records.	The specified resource group does not exist.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.