Call AttachClassicLinkVpc to connect a classic network instance to a VPC - Elastic Compute Service - Alibaba Cloud - Elastic Compute Service

Links an instance that is deployed in the classic network to a virtual private cloud (VPC) by establishing a ClassicLink connection between the instance and the VPC. This way, the instance can communicate with cloud resources in the VPC over the internal network.

Operation description

When you call this operation, take note of the following items:

The instance that you want to connect to a VPC must be in the Running or Stopped state.
The ClassicLink feature must be enabled for the destination VPC. For more information, see Create a ClassicLink connection.
The instance and the VPC must reside in the same region.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

ecs:AttachClassicLinkVpc

update

*Instance

acs:ecs:{#regionId}:{#accountId}:instance/{#instanceId}

*VPC

acs:vpc:{#regionId}:{#accountId}:vpc/{#vpcId}

vpc:tag

None

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID of the instance. You can call the DescribeRegions operation to query the most recent region list.	cn-hangzhou
InstanceId	string	Yes	The ID of the instance that is deployed in the classic network. You can call the DescribeInstances operation to query available instances.	i-bp1gtjxuuvwj17zr****
VpcId	string	Yes	The ID of the VPC for which the ClassicLink feature is enabled. You can call the DescribeVpcs operation to query available VPCs.	vpc-bp1j4z1sr8zxu4l8u****

Response elements

Element	Type	Description	Example
	object
RequestId	string	The ID of the request.	473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

Examples

Success response

JSON format

{
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E"
}

Error response

JSON format

{
    "RequestId": "C0003E8B-B930-4F59-ADC0-0E209A9012A8"
}

Error codes

HTTP status code	Error code	Error message	Description
403	InvalidInstanceId.NotFound	The InstanceId provided does not exist in our records.
403	InvalidRegionId.Malformed	The specified parameter ?RegionId? is not valid.
403	InvalidVpcId.Malformed	The specified parameter ?VpcId? is not valid.
403	InvalidInstanceId.MalFormed	The specified instance is not a classic network instance.
403	OperationDenied	The instance does not allow link to vpc.	The instance is linked to another VPC.
403	InvalidParameter.InvalidInstanceIdAndVpcId	The parameter InstanceId and VpcId are not allowed to be empty at the same time.	At least one of the InstanceId and VpcId parameters must be specified.
403	InvalidStatus.InstanceStatus	The specified instance status is not support this operation ,expect status is running or shutted.	The instance is in a state that does not support the operation. The operation can be performed only when the instance is in the Running or Stopped state.
403	InvalidInstanceId.NotBelong	The specified instance is not belong to you.
403	QuotaExceeded	The link quota exceeded in this vpc.	The maximum number of ClassicLink connections that can be established to the specified VPC has been reached.
403	InvalidStatus.InstanceLocked	The specified instance is locked,please wait more.
403	InvalidInstanceId.LimitedRegion	The specified instance does not support this operation due to the limitation of its region.	The operation is not supported while the instance resides in the current region.
403	Forbidden.SubUser	User not authorized to operate on the specified resource.	Your RAM user is not authorized to manage this resource.
403	InvalidRegionId.NotFound	The RegionId provided does not exist in our records.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.