AWS::EC2::Volume - AWS CloudFormation

AWS::EC2::Volume

Specifies an Amazon Elastic Block Store (Amazon EBS) volume.

When you use AWS CloudFormation to update an Amazon EBS volume that modifies Iops, Size, or VolumeType, there is a cooldown period before another operation can occur. This can cause your stack to report being in UPDATE_IN_PROGRESS or UPDATE_ROLLBACK_IN_PROGRESS for long periods of time.

Amazon EBS does not support sizing down an Amazon EBS volume. AWS CloudFormation will not attempt to modify an Amazon EBS volume to a smaller size on rollback.

Some common scenarios when you might encounter a cooldown period for Amazon EBS include:

  • You successfully update an Amazon EBS volume and the update succeeds. When you attempt another update within the cooldown window, that update will be subject to a cooldown period.

  • You successfully update an Amazon EBS volume and the update succeeds but another change in your update-stack call fails. The rollback will be subject to a cooldown period.

For more information on the cooldown period, see Requirements for Modifying EBS Volumes.

To control how AWS CloudFormation handles the volume when the stack is deleted, set a deletion policy for your volume. You can choose to retain the volume, to delete the volume, or to create a snapshot of the volume. For more information, see DeletionPolicy Attribute.

Note

If you set a deletion policy that creates a snapshot, all tags on the volume are included in the snapshot.

Syntax

To declare this entity in your AWS CloudFormation template, use the following syntax:

JSON

{ "Type" : "AWS::EC2::Volume", "Properties" : { "AutoEnableIO" : Boolean, "AvailabilityZone" : String, "Encrypted" : Boolean, "Iops" : Integer, "KmsKeyId" : String, "MultiAttachEnabled" : Boolean, "OutpostArn" : String, "Size" : Integer, "SnapshotId" : String, "Tags" : [ Tag, ... ], "Throughput" : Integer, "VolumeType" : String } }

YAML

Type: AWS::EC2::Volume Properties: AutoEnableIO: Boolean AvailabilityZone: String Encrypted: Boolean Iops: Integer KmsKeyId: String MultiAttachEnabled: Boolean OutpostArn: String Size: Integer SnapshotId: String Tags: - Tag Throughput: Integer VolumeType: String

Properties

AutoEnableIO

Indicates whether the volume is auto-enabled for I/O operations. By default, Amazon EBS disables I/O to the volume from attached EC2 instances when it determines that a volume's data is potentially inconsistent. If the consistency of the volume is not a concern, and you prefer that the volume be made available immediately if it's impaired, you can configure the volume to automatically enable I/O.

Required: No

Type: Boolean

Update requires: No interruption

AvailabilityZone

The Availability Zone in which to create the volume.

Required: Yes

Type: String

Update requires: Updates are not supported.

Encrypted

Indicates whether the volume should be encrypted. The effect of setting the encryption state to true depends on the volume origin (new or from a snapshot), starting encryption state, ownership, and whether encryption by default is enabled. For more information, see Encryption by default in the Amazon Elastic Compute Cloud User Guide.

Encrypted Amazon EBS volumes must be attached to instances that support Amazon EBS encryption. For more information, see Supported instance types.

Required: No

Type: Boolean

Update requires: Updates are not supported.

Iops

The number of I/O operations per second (IOPS). For gp3, io1, and io2 volumes, this represents the number of IOPS that are provisioned for the volume. For gp2 volumes, this represents the baseline performance of the volume and the rate at which the volume accumulates I/O credits for bursting.

The following are the supported values for each volume type:

  • gp3: 3,000-16,000 IOPS

  • io1: 100-64,000 IOPS

  • io2: 100-64,000 IOPS

io1 and io2 volumes support up to 64,000 IOPS only on Instances built on the Nitro System. Other instance families support performance up to 32,000 IOPS.

This parameter is required for io1 and io2 volumes. The default for gp3 volumes is 3,000 IOPS. This parameter is not supported for gp2, st1, sc1, or standard volumes.

Required: Conditional

Type: Integer

Update requires: No interruption

KmsKeyId

The identifier of the AWS Key Management Service (AWS KMS) customer master key (CMK) to use for Amazon EBS encryption. If KmsKeyId is specified, the encrypted state must be true.

If you omit this property and your account is enabled for encryption by default, or Encrypted is set to true, then the volume is encrypted using the default CMK specified for your account. If your account does not have a default CMK, then the volume is encrypted using the AWS managed CMK.

Alternatively, if you want to specify a different CMK, you can specify one of the following:

  • Key ID. For example, 1234abcd-12ab-34cd-56ef-1234567890ab.

  • Key alias. Specify the alias for the CMK, prefixed with alias/. For example, for a CMK with the alias my_cmk, use alias/my_cmk. Or to specify the AWS managed CMK, use alias/aws/ebs.

  • Key ARN. For example, arn:aws:kms:us-east-1:012345678910:key/1234abcd-12ab-34cd-56ef-1234567890ab.

  • Alias ARN. For example, arn:aws:kms:us-east-1:012345678910:alias/ExampleAlias.

Required: No

Type: String

Update requires: Updates are not supported.

MultiAttachEnabled

Indicates whether Amazon EBS Multi-Attach is enabled.

Note

AWS CloudFormation does not currently support updating a single-attach volume to be multi-attach enabled, updating a multi-attach enabled volume to be single-attach, or updating the size or number of I/O operations per second (IOPS) of a multi-attach enabled volume.

Required: No

Type: Boolean

Update requires: No interruption

OutpostArn

The Amazon Resource Name (ARN) of the Outpost.

Required: No

Type: String

Update requires: No interruption

Size

The size of the volume, in GiBs. You must specify either a snapshot ID or a volume size. If you specify a snapshot, the default is the snapshot size. You can specify a volume size that is equal to or larger than the snapshot size.

The following are the supported volumes sizes for each volume type:

  • gp2 and gp3: 1-16,384

  • io1 and io2: 4-16,384

  • st1 and sc1: 125-16,384

  • standard: 1-1,024

Required: Conditional

Type: Integer

Update requires: No interruption

SnapshotId

The snapshot from which to create the volume. You must specify either a snapshot ID or a volume size.

Required: Conditional

Type: String

Update requires: Updates are not supported.

Tags

The tags to apply to the volume during creation.

Required: No

Type: List of Tag

Update requires: No interruption

Throughput

The throughput that the volume supports, in MiB/s.

Required: No

Type: Integer

Update requires: No interruption

VolumeType

The volume type. This parameter can be one of the following values:

  • General Purpose SSD: gp2 | gp3

  • Provisioned IOPS SSD: io1 | io2

  • Throughput Optimized HDD: st1

  • Cold HDD: sc1

  • Magnetic: standard

For more information, see Amazon EBS volume types in the Amazon Elastic Compute Cloud User Guide.

Default: gp2

Required: No

Type: String

Allowed values: gp2 | gp3 | io1 | io2 | sc1 | st1 | standard

Update requires: No interruption

Return values

Ref

When you pass the logical ID of this resource to the intrinsic Ref function, Ref returns the resource name. For example: vol-5cb85026.

For more information about using the Ref function, see Ref.

Examples

Encrypted Amazon EBS volume with DeletionPolicy to make a snapshot on delete

JSON

"NewVolume" : { "Type" : "AWS::EC2::Volume", "Properties" : { "Size" : "100", "Encrypted" : "true", "AvailabilityZone" : { "Fn::GetAtt" : [ "Ec2Instance", "AvailabilityZone" ] }, "Tags" : [ { "Key" : "MyTag", "Value" : "TagValue" } ] }, "DeletionPolicy" : "Snapshot" }

YAML

NewVolume: Type: AWS::EC2::Volume Properties: Size: 100 Encrypted: true AvailabilityZone: !GetAtt Ec2Instance.AvailabilityZone Tags: - Key: MyTag Value: TagValue DeletionPolicy: Snapshot

Amazon EBS volume with 100 provisioned IOPS

JSON

"NewVolume" : { "Type" : "AWS::EC2::Volume", "Properties" : { "Size" : "100", "VolumeType" : "io1", "Iops" : "100", "AvailabilityZone" : { "Fn::GetAtt" : [ "EC2Instance", "AvailabilityZone" ] } } }

YAML

NewVolume: Type: AWS::EC2::Volume Properties: Size: 100 VolumeType: io1 Iops: 100 AvailabilityZone: !GetAtt Ec2Instance.AvailabilityZone

See also