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 repeat cycle, retention period, and cross-region backup settings for automatic snapshots to back up data on system disks or data disks.

Operation description

Before you call this operation, read Create an automatic snapshot policy.

Take note of the following items:

You can create a maximum of 100 automatic snapshot policies in a region for an Alibaba Cloud account. When the number of automatic snapshots for a disk reaches the quota limit, the system deletes the earliest automatic snapshot created by the automatic snapshot policy when a new snapshot task is initiated.
The system does not execute automatic snapshot policies when an ECS instance has a pending stop or restart task.
If cross-region snapshot replication is enabled and no encryption parameters are configured, encrypted snapshots are replicated to the destination region by using the service key of the destination region by default. For more information about cross-region snapshot replication, see Copy a snapshot.

After you create an automatic snapshot policy, call ApplyAutoSnapshotPolicy to apply the policy to disks. To modify an 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. The name must start with a letter and cannot start with http:// or https://. The name 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 displayed in UTC+8. Unit: hours. Valid values: 0 to 23, which represent the 24 points in time from 00:00 to 23:00. For example, 1 indicates 01:00. Format description: The parameter value must be a JSON array. For example, ["1"] indicates that automatic snapshots are created at 01:00. To create multiple automatic snapshots within a day, specify multiple points in time separated by commas (,). You can specify a maximum of 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 a disk contains a large amount of data and the time required to create an automatic snapshot exceeds the interval between two consecutive points in time, the next point in time is skipped. For example, you set 09:00, 10:00, 11:00, and 12:00 as the points in time for automatic snapshot creation. The snapshot creation starts at 09:00 and is completed at 10:20, which takes 80 minutes. The system skips the 10:00 point in time 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. Unit: days. The cycle is weekly. Valid values: 1 to 7. For example, 1 indicates Monday. Format description: The parameter value must be a JSON array. For example, ["1"] indicates that automatic snapshots are created every Monday. To create multiple automatic snapshots within a week, specify multiple days separated by commas (,). You can specify a maximum of 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: Automatic snapshots are permanently retained. 1 to 65535: Automatic snapshots are retained for the specified number of days. Default value: -1.	30
EnableCrossRegionCopy	boolean	No	Specifies whether to enable automatic cross-region replication. true: enables automatic cross-region replication. false: disables automatic cross-region replication.	false
TargetCopyRegions	string	No	The destination region to which snapshots are replicated. You can specify only one destination region.	["cn-hangzhou"]
StorageLocationArn	string	No	Note This parameter is not publicly available.	null
CopiedSnapshotsRetentionDays	integer	No	The retention period of cross-region snapshot replicas. Unit: days. Valid values: -1: Snapshot replicas are permanently retained. 1 to 65535: Snapshot replicas are retained for the specified number of days. Default value: -1.	30
Tag	array<object>	No	The tags of the automatic snapshot policy.
	object	No
Key	string	No	The tag key of the automatic snapshot policy. Valid values of N: 1 to 20. The tag key cannot be an empty string. The tag key can be up to 128 characters in length and cannot start with aliyun or acs:. The tag key cannot contain http:// or https://.	TestKey
Value	string	No	The tag value of the automatic snapshot policy. Valid values of N: 1 to 20. The tag value can be an empty string. The tag value can be up to 128 characters in length and cannot start with acs:. The tag value cannot contain http:// or https://.	TestValue
ResourceGroupId	string	No	The ID of the resource group.	rg-aek2kkmhmhs****
CopyEncryptionConfiguration	object	No	The backup encryption parameter object for snapshot geo-redundancy.
Encrypted	boolean	No	Specifies whether to enable encryption for cross-region snapshot backup. Valid values: true: enables encryption. false: disables encryption. Default value: false.	false
KMSKeyId	string	No	The KMS key ID used for encrypted cross-region snapshot backup.	0e478b7a-4262-4802-b8cb-00d3fb40826X
Arn	array<object>	No	Note This parameter is not publicly available.
	object	No
RoleType	string	No	Note This parameter is not publicly available.	hide
Rolearn	string	No	Note This parameter is not publicly available.	hide
AssumeRoleFor	integer	No	Note This parameter is not publicly available.	1000000000

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 Tag.N.Key contain duplicate key.	The specified tag key already exists. Tag keys must be unique.
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 specified parameter Encrypted must be true when kmsKeyId is not empty.	The encryption feature is not enabled after a Key Management Service (KMS) key ID is specified.
400	InvalidParameter.KmsNotEnabled	Failed to perform this operation because KMS is not activated.	You need to activate KMS key management service.
400	InvalidParameter.Encrypted.KmsNotEnable	Failed to perform this operation because KMS is not activated.	You need to activate KMS key escrow service.
400	InvalidParam.EncryptedMismatch	Creating encrypted disks with shared encrypted image requires replacing encryption keys.	You must change the encryption key to create a cloud disk after sharing an encrypted image.
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	Snapshot service has not been opened yet.	The operation is not supported while the snapshot service is not activated.
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 not found, %s.	The associated KMS encryption key cannot be found. Verify that the KMS encryption key is valid.
403	Abs.InvalidAction.RegionNotSupport	This region does not support this action.	The operation is not supported in the region.
403	InvalidParameter.KMSKeyId.CMKNotEnabled	The CMK (Customer Master Key) must be in an active state.	The CMK (Customer Master Key) must be in an active state.
403	InvalidParameter.KMSKeyId.CMKUnauthorized	The CMK(Customer Master Key) lacks authorization to add tags to the ECS service.	The CMK(Customer Master Key) lacks authorization to add tags to the ECS service.
403	InvalidStorageLocationArn.Malformed	The specified parameter StorageLocationArn is malformed.
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.