GET

/#Action=AttachClassicLinkVpc

http://ec2.{region}.amazonaws.com/#Action=AttachClassicLinkVpc

<note> We are retiring EC2-Classic. We recommend that you migrate from EC2-Classic to a VPC. For more information, see <a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/vpc-migrate.html">Migrate from EC2-Classic to a VPC</a> in the Amazon Elastic Compute Cloud User Guide. </note> Links an EC2-Classic instance to a ClassicLink-enabled VPC through one or more of the VPC's security groups. You cannot link an EC2-Classic instance to more than one VPC at a time. You can only link an instance that's in the <code>running</code> state. An instance is automatically unlinked from a VPC when it's stopped - you can link it to the VPC again when you restart it. After you've linked an instance, you cannot change the VPC security groups that are associated with it. To change the security groups, you must first unlink the instance, and then link it again. Linking your instance to a VPC is sometimes referred to as attaching your instance.

Access Token Required: API Key

Query Params

DryRunboolean

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 <code>DryRunOperation</code>. Otherwise, it is <code>UnauthorizedOperation</code>.

SecurityGroupIdarrayrequired

The ID of one or more of the VPC's security groups. You cannot specify security groups from a different VPC.

InstanceIdstringrequired

The ID of an EC2-Classic instance to link to the ClassicLink-enabled VPC.

VpcIdstringrequired

The ID of a ClassicLink-enabled VPC.

Actionstringrequired

Allowed:

Versionstringrequired

Allowed:

Responses

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}

Language

CredentialsAPI KEY

API Key

Enter token below to save for later

cURL Request

1curl --request GET \
2     --url 'http://ec2.{region}.amazonaws.com/#Action=AttachClassicLinkVpc' \
3     --header 'accept: application/json' \
4     --header 'content-type: application/json'

Response

1{
2  "success": true,
3  "data": {
4    "id": "abc123",
5    "created_at": "2025-01-01T00:00:00Z"
6  }
7}