GET /#Action=ModifyInstanceAttribute

Modifies the specified attribute of the specified instance. You can specify only one attribute at a time.

Note: Using this action to change the security groups associated with an elastic network interface (ENI) attached to an instance in a VPC can result in an error if the instance has more than one ENI. To change the security groups associated with an ENI attached to an instance that has multiple ENIs, we recommend that you use the ModifyNetworkInterfaceAttribute action.

To modify some attributes, the instance must be stopped. For more information, see Modify a stopped instance in the Amazon EC2 User Guide.

Servers

https://ec2.{region}.amazonaws.com
https://ec2.amazonaws.com
https://ec2.{region}.amazonaws.com.cn

Request headers

Name	Type	Required
`X-Amz-Content-Sha256`	String	No
`X-Amz-Credential`	String	No
`X-Amz-Date`	String	No
`X-Amz-Algorithm`	String	No
`X-Amz-SignedHeaders`	String	No
`X-Amz-Security-Token`	String	No
`X-Amz-Signature`	String	No

Query parameters

Name	Type	Required	Description
`Version`	String	Yes	Possible values: `"2016-11-15"`
`Ramdisk`	Object	No	Changes the instance's RAM disk to the specified value. We recommend that you use PV-GRUB instead of kernels and RAM disks. For more information, see PV-GRUB.
`DisableApiTermination`	Object	No	If the value is `true`, you can't terminate the instance using the Amazon EC2 console, CLI, or API; otherwise, you can. You cannot use this parameter for Spot Instances.
`Attribute`	String	No	The name of the attribute to modify. You can modify the following attributes only: `disableApiTermination` \| `instanceType` \| `kernel` \| `ramdisk` \| `instanceInitiatedShutdownBehavior` \| `blockDeviceMapping` \| `userData` \| `sourceDestCheck` \| `groupSet` \| `ebsOptimized` \| `sriovNetSupport` \| `enaSupport` \| `nvmeSupport` \| `disableApiStop` \| `enclaveOptions` Possible values: `"enclaveOptions"` `"productCodes"` `"instanceType"` `"ramdisk"` `"groupSet"` `"disableApiTermination"` `"enaSupport"` `"sourceDestCheck"` `"userData"` `"instanceInitiatedShutdownBehavior"` `"kernel"` `"rootDeviceName"` `"sriovNetSupport"` `"disableApiStop"` `"ebsOptimized"` `"blockDeviceMapping"`
`InstanceInitiatedShutdownBehavior`	Object	No	Specifies whether an instance stops or terminates when you initiate shutdown from the instance (using the operating system command for system shutdown).
`Value`	String	No	A new value for the attribute. Use only with the `kernel`, `ramdisk`, `userData`, `disableApiTermination`, or `instanceInitiatedShutdownBehavior` attribute.
`InstanceId`	String	Yes	The ID of the instance.
`SriovNetSupport`	Object	No	Set to `simple` to enable enhanced networking with the Intel 82599 Virtual Function interface for the instance. There is no way to disable enhanced networking with the Intel 82599 Virtual Function interface at this time. This option is supported only for HVM instances. Specifying this option with a PV instance can make it unreachable.
`BlockDeviceMapping[]`	Array	No	Modifies the `DeleteOnTermination` attribute for volumes that are currently attached. The volume must be owned by the caller. If no value is specified for `DeleteOnTermination`, the default is `true` and 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 Update the block device mapping when launching an instance in the Amazon EC2 User Guide.
`Kernel`	Object	No	Changes the instance's kernel to the specified value. We recommend that you use PV-GRUB instead of kernels and RAM disks. For more information, see PV-GRUB.
`InstanceType`	Object	No	Changes the instance type to the specified value. For more information, see Instance types in the Amazon EC2 User Guide. If the instance type is not valid, the error returned is `InvalidInstanceAttributeValue`.
`EbsOptimized`	Object	No	Specifies whether the instance is optimized for Amazon EBS I/O. This optimization provides dedicated throughput to Amazon EBS and an optimized configuration stack to provide optimal EBS I/O performance. This optimization isn't available with all instance types. Additional usage charges apply when using an EBS Optimized instance.
`SourceDestCheck`	Object	No	Enable or disable source/destination checks, which ensure that the instance is either the source or the destination of any traffic that it receives. If the value is `true`, source/destination checks are enabled; otherwise, they are disabled. The default value is `true`. You must disable source/destination checks if the instance runs services such as network address translation, routing, or firewalls.
`GroupId[]`	Array	No	[EC2-VPC] Replaces the security groups of the instance with the specified security groups. You must specify at least one security group, even if it's just the default security group for the VPC. You must specify the security group ID, not the security group name.
`UserData`	Object	No	Changes the instance's user data to the specified value. If you are using an Amazon Web Services SDK or command line tool, base64-encoding is performed for you, and you can load the text from a file. Otherwise, you must provide base64-encoded text.
`DisableApiStop`	Object	No	Indicates whether an instance is enabled for stop protection. For more information, see Stop Protection.
`EnaSupport`	Object	No	Set to `true` to enable enhanced networking with ENA for the instance. This option is supported only for HVM instances. Specifying this option with a PV instance can make it unreachable.
`DryRun`	Boolean	No	Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is `DryRunOperation`. Otherwise, it is `UnauthorizedOperation`.
`Action`	String	Yes	Possible values: `"ModifyInstanceAttribute"`

How to start integrating

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Click Test request to test run your request to the API and see the API's response.