ALIYUN::ECS::AutoSnapshotPolicy is used to create an automatic snapshot policy.

Syntax

{
  "Type" : "ALIYUN::ECS::AutoSnapshotPolicy",
  "Properties" : {
    "TimePoints" : String,
    "RepeatWeekdays" : String,
    "RetentionDays" : Integer,
    "DiskIds" : List,
    "Tags": List,
    "AutoSnapshotPolicyName" : String
  }
}

Properties

Property Type Required Editable Description Constraint
TimePoints List Yes Yes The points in time at which to create automatic snapshots. Valid values: 0 to 23. The values correspond to the hours of a day from 00:00 to 23:00. For example, 1 indicates 01:00.

Unit: hours.

To schedule multiple automatic snapshots to be created in a day, you can specify multiple hours.

  • You can specify up to 24 hours in a day.
  • You must specify the parameter as a list. Example: [0, 1, ... 23]. Separate multiple hours with commas (,).
RepeatWeekdays List Yes Yes The days of a week on which to create automatic snapshots. Valid values: 1 to 7. The values from 1 to 7 indicate the seven days in a week from Monday to Sunday.

Cycle: week.

To schedule multiple automatic snapshots to be created in a week, you can specify multiple days. You must specify the parameter as a list. Example: [1, 2, ... 7]. Separate multiple days with commas (,). You can specify up to seven days in a one-week period.

RetentionDays Integer Yes Yes The number of days for which you want to retain automatic snapshots.

Default value: -1. Valid values:

  • -1: Automatic snapshots are permanently retained.
  • 1 to 65535: Automatic snapshots are retained for a specific number of days.

Unit: days.

DiskIds List No Yes

The IDs of disks to which you want to apply the automatic snapshot policy.

To apply the automatic snapshot policy to multiple disks, set this parameter to a list in the ["d-xxxxxxxxx", "d-yyyyyyyyy", ... "d-zzzzzzzzz"] format. Separate multiple IDs with commas (,).
Tags List No Yes The tags of the policy. A maximum of 20 tags can be specified.

For more information, see the Tags properties section in this topic.

AutoSnapshotPolicyName String No Yes The name of the automatic snapshot policy. The name must be 2 to 128 characters in length and can contain letters, digits, colons(:), underscores (_), and hyphens (-). It must start with a letter and cannot start with http:// or https://.

This parameter is empty by default.

Tags syntax

"Tags": [
  {
    "Key": String,
    "Value": String
  }
]

Tags properties

Property Type Required Editable Description Constraint
Key String Yes No The tag key. The tag key must be 1 to 128 characters in length and cannot contain http:// or https://. It cannot start with acs: or aliyun.
Value String No No The tag value. The tag value must be 0 to 128 characters in length and cannot contain http:// or https://. It cannot start with acs: or aliyun.

Response parameters

Fn::GetAtt

AutoSnapshotPolicyId: the ID of the automatic snapshot policy.

Examples

JSON format 

{
  "ROSTemplateFormatVersion": "2015-09-01",
  "Parameters": {
    "TimePoints": {
      "Type": "CommaDelimitedList",
      "Description": "The automatic snapshot creation schedule, and the unit of measurement is hour. Value range: [0, 23], which represents from 00:00 to 24:00, for example 1 indicates 01:00. When you want to schedule multiple automatic snapshot tasks for a disk in a day, you can set the TimePoints to an array.\nA maximum of 24 time points can be selected.\nThe format is a list of [0, 1, ..., 23] and the time points are separated by commas (,)."
    },
    "DiskIds": {
      "Type": "Json",
      "Description": "The disk ID. When you want to apply the automatic snapshot policy to multiple disks, you can set the DiskIds to an array. The format is list of [\"d-xxxxxxxxx\", \"d-yyyyyyyyy\", ..., \"d-zzzzzzzzz\"] and the IDs are separated by commas (,)."
    },
    "RetentionDays": {
      "Type": "Number",
      "Description": "The snapshot retention time, and the unit of measurement is day. Optional values:\n-1: The automatic snapshots are retained permanently.\n[1, 65536]: The number of days retained.\nDefault value: -1.",
      "MinValue": -1,
      "MaxValue": 65536
    },
    "RepeatWeekdays": {
      "Type": "Json",
      "Description": "The automatic snapshot repetition dates. The unit of measurement is day and the repeating cycle is a week. Value range: [1, 7], which represents days starting from Monday to Sunday, for example 1 indicates Monday. When you want to schedule multiple automatic snapshot tasks for a disk in a week, you can set the RepeatWeekdays to an array.\nA maximum of seven time points can be selected.\nThe format is a list of [1, 2, ..., 7] and the time points are separated by commas (,)."
    },
    "AutoSnapshotPolicyName": {
      "Type": "String",
      "Description": "The name of the automatic snapshot policy.\nIt can consist of [2, 128] English or Chinese characters.\nMust begin with an uppercase or lowercase letter or a Chinese character. Can contain numbers, periods (.), colons (:), underscores (_), and hyphens (-).\nCannot start with http:// or https://.\nDefault value: null."
    },
    "Tags": {
      "Type": "Json",
      "Description": "Tags to attach to instance. Max support 20 tags to add during create instance. Each tag with two properties Key and Value, and Key is required.",
      "MaxLength": 20
    }
  },
  "Resources": {
    "AutoSnapshotPolicy": {
      "Type": "ALIYUN::ECS::AutoSnapshotPolicy",
      "Properties": {
        "TimePoints": {
          "Ref": "TimePoints"
        },
        "DiskIds": {
          "Ref": "DiskIds"
        },
        "RetentionDays": {
          "Ref": "RetentionDays"
        },
        "RepeatWeekdays": {
          "Ref": "RepeatWeekdays"
        },
        "AutoSnapshotPolicyName": {
          "Ref": "AutoSnapshotPolicyName"
        },
        "Tags": {
          "Ref": "Tags"
        }
      }
    }
  },
  "Outputs": {
    "AutoSnapshotPolicyId": {
      "Description": "The automatic snapshot policy ID.",
      "Value": {
        "Fn::GetAtt": [
          "AutoSnapshotPolicy",
          "AutoSnapshotPolicyId"
        ]
      }
    }
  }
}

YAML format 

ROSTemplateFormatVersion: '2015-09-01'
Parameters:
  AutoSnapshotPolicyName:
    Description: 'The name of the automatic snapshot policy.

      It can consist of [2, 128] English or Chinese characters.

      Must begin with an uppercase or lowercase letter or a Chinese character. Can
      contain numbers, periods (.), colons (:), underscores (_), and hyphens (-).

      Cannot start with http:// or https://.

      Default value: null.'
    Type: String
  DiskIds:
    Description: The disk ID. When you want to apply the automatic snapshot policy
      to multiple disks, you can set the DiskIds to an array. The format is list of
      ["d-xxxxxxxxx", "d-yyyyyyyyy", ..., "d-zzzzzzzzz"] and the IDs are separated
      by commas (,).
    Type: Json
  RepeatWeekdays:
    Description: 'The automatic snapshot repetition dates. The unit of measurement
      is day and the repeating cycle is a week. Value range: [1, 7], which represents
      days starting from Monday to Sunday, for example 1 indicates Monday. When you
      want to schedule multiple automatic snapshot tasks for a disk in a week, you
      can set the RepeatWeekdays to an array.

      A maximum of seven time points can be selected.

      The format is a list of [1, 2, ..., 7] and the time points are separated by
      commas (,).'
    Type: Json
  RetentionDays:
    Description: 'The snapshot retention time, and the unit of measurement is day.
      Optional values:

      -1: The automatic snapshots are retained permanently.

      [1, 65536]: The number of days retained.

      Default value: -1.'
    MaxValue: 65536
    MinValue: -1
    Type: Number
  Tags:
    Description: Tags to attach to instance. Max support 20 tags to add during create
      instance. Each tag with two properties Key and Value, and Key is required.
    MaxLength: 20
    Type: Json
  TimePoints:
    Description: 'The automatic snapshot creation schedule, and the unit of measurement
      is hour. Value range: [0, 23], which represents from 00:00 to 24:00, for example
      1 indicates 01:00. When you want to schedule multiple automatic snapshot tasks
      for a disk in a day, you can set the TimePoints to an array.

      A maximum of 24 time points can be selected.

      The format is a list of [0, 1, ..., 23] and the time points are separated by
      commas (,).'
    Type: CommaDelimitedList
Resources:
  AutoSnapshotPolicy:
    Properties:
      AutoSnapshotPolicyName:
        Ref: AutoSnapshotPolicyName
      DiskIds:
        Ref: DiskIds
      RepeatWeekdays:
        Ref: RepeatWeekdays
      RetentionDays:
        Ref: RetentionDays
      Tags:
        Ref: Tags
      TimePoints:
        Ref: TimePoints
    Type: ALIYUN::ECS::AutoSnapshotPolicy
Outputs:
  AutoSnapshotPolicyId:
    Description: The automatic snapshot policy ID.
    Value:
      Fn::GetAtt:
      - AutoSnapshotPolicy
      - AutoSnapshotPolicyId

For more examples, visit AutoSnapshotPolicy.json and AutoSnapshotPolicy.yml.