ec2-modify-instance-attribute

instance_id

The instance ID.

Type: String

Default: None

Required: Yes

Example: i-43a4412a

-b, --block-device-mapping mapping

Modifies the DeleteOnTermination attribute for volumes that are currently attached. The volume must be owned by the caller. If no value is specified for DeleteOnTerminaton, the volume is deleted when the instance is terminated.

To add instance store volumes to an Amazon EBS-backed instance, you must add them when you launch the instance. For more information, see Updating the Block Device Mapping when Launching an Instance in the Amazon Elastic Compute Cloud User Guide.

Type: BlockDeviceMapping

Required: No

Example: -b "/dev/sdb=:false"

--disable-api-termination Boolean

Whether the instance can be terminated using the EC2 API. A value of true means you can't terminate the instance using the API (the instance is "locked"). A value of false means you can terminate the instance using the API (the instance is "unlocked"). Set this attribute to true to prevent the instance from being terminated using the EC2 API.

Type: Boolean

Default: false

Required: No

Example: --disable-api-termination true

--ebs-optimized Boolean

Whether the instance is optimized for EBS I/O. This optimization provides dedicated throughput to Amazon EBS and an optimized configuration stack to provide optimal EBS I/O performance. This option isn't available on all instance types. Additional usage charge apply when using this option.

Type: Boolean

Default: false

Required: No

Example: --ebs-optimized true

-g, --group-id group_id

[EC2-VPC] Modify the security groups an instance is in. The new set of groups you specify replaces the current set. You must specify at least one group, even if it's just the default security group for the VPC. You must specify the group ID and not the group name.

Type: String

Default: None

Required: No

Example: -g sg-1a1a1a1a -g sg-9b9b9b9b

--instance-initiated-shutdown-behavior behavior

Whether the instance stops or terminates when you initiate instance shutdown.

Type: String

Valid values: stop | terminate

Default: stop

Required: No

Example: --instance-initiated-shutdown-behavior stop

-t, --instance-type type

The type of the instance. See Available Instance Types for more information. An InvalidInstanceAttributeValue error will be returned if the instance type is not valid.

Type: String

Default: m1.small

Required: No

Example: -t m1.large

--kernel kernel_id

The ID of the kernel associated with the AMI.

Type: String

Default: None

Required: No

Example: --kernel aki-1a2b3c4d

--ramdisk ramdisk_id

The ID of the RAM disk associated with the AMI.

Type: String

Default: None

Required: No

Example: --ramdisk ari-1a2b3c4d

--source-dest-check Boolean

Enables an instance in a VPC to perform NAT. The attribute controls whether source/destination checking is enabled on the instance. A value of true means checking is enabled, and false means checking is disabled. The value must be false for the instance to perform NAT. For more information, see NAT Instances in the Amazon Virtual Private Cloud User Guide.

Type: Boolean

Default: true

Required: No

Example: --source-dest-check false

--user-data user_data

The Base64-encoded MIME user data to be made available to the instances in this reservation.

Type: String

Default: None

Required: No

Example: --user-data "My user data"

--region REGION

Overrides the region specified by the EC2_URL environment variable and the URL specified by the -U option.

Default: The value of the EC2_URL environment variable, or us-east-1 if EC2_URL isn't set.

Example: --region eu-west-1

-U, --url URL

The uniform resource locator (URL) of the Amazon EC2 web service entry point.

Default: The value of the EC2_URL environment variable, or https://ec2.amazonaws.com if EC2_URL isn't set.

Example: -U https://ec2.amazonaws.com

-O, --aws-access-key AWS_ACCESS_KEY

The access key ID associated with your AWS account. For more information, see Tell the Tools Who You Are.

Default: The value of the AWS_ACCESS_KEY environment variable. If AWS_ACCESS_KEY isn't set, you must specify this option.

Example: -O AKIAIOSFODNN7EXAMPLE

-W, --aws-secret-key AWS_SECRET_KEY

The secret access key associated with your AWS account.

Default: The value of the AWS_SECRET_KEY environment variable. If AWS_SECRET_KEY isn't set, you must specify this option.

Example: -W wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY

-T, --security-token TOKEN AWS_DELEGATION_TOKEN

The AWS delegation token.

Default: The value of the environment variable (if set).

--connection-timeout TIMEOUT

The connection timeout, in seconds.

Example: --connection-timeout 30

--request-timeout TIMEOUT

The request timeout, in seconds.

Example: --request-timeout 45

-v, --verbose

Displays verbose output, including the API request and response on the command line. This is useful if you are building tools to talk directly to our Query API.

-H, --headers

Includes column headers in the command output.

--show-empty-fields

Shows empty columns as (nil).

--hide-tags

Omits tags for tagged resources.

--debug

Displays internal debugging information. This can assist us when helping you troubleshooting problems.

-?, --help, -h

Displays usage information for the command.

-

Reads arguments from standard input. This is useful when piping the output from one command to the input of another.

Example: ec2-describe-instances | grep stopped | cut -f 2 | ec2-start-instances -