Help & DocumentationAPIsVirtual Private CloudEIP-Related APIsAssociateAddress

AssociateAddress

Last updated: 2019-11-29 17:45:37

Contents：

1. API Description

Domain name for API request: vpc.tencentcloudapi.com.

This API (AssociateAddress) is used to bind an Elastic IP(EIP) to an instance or a specified private IP of an ENI.

  • Essentially, binding an EIP to an instance means binding an EIP to the primary private IP of the primary ENI on an instance.
  • When you bind an EIP to the primary private IP of the primary ENI, the previously bound public IP is automatically unbound and released.
  • If the private IP of the specified ENI has been bound to an EIP, you must unbind this EIP before binding a new one.
  • EIPs that are in arrears or blocked cannot be bound.
  • Only EIPs in the UNBIND status can be bound.

A maximum of 10 requests can be initiated per second for this API.

Note: This API supports Finance regions. Since Finance regions and non-Finance regions are isolated and not interconnected. If the common parameter Region is a Finance region (such as ap-shanghai-fsi), you need to specify a domain name containing the Finance region that should be identical to the value of Region field, for example: vpc.ap-shanghai-fsi.tencentcloudapi.com.

2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common parameter. The value used for this API: AssociateAddress
Version Yes String Common parameter. The value used for this API: 2017-03-12
Region Yes String Common parameter. For more information, please see the list of regions supported by the product.
AddressId Yes String The unique ID of an EIP. Example of the unique ID of an EIP: eip-11112222.
InstanceId No String ID of the instance to be bound to. such as ins-11112222. It can be queried through the console or obtained from the InstanceId field value in the returned result of API DescribeInstances.
NetworkInterfaceId No String ID of the ENI to be bound to. Example of an ENI ID: eni-11112222. NetworkInterfaceId and InstanceId cannot be specified at the same time. The ENI ID can be queried through the console or obtained from the networkInterfaceId field in the returned value by the API DescribeNetworkInterfaces.
PrivateIpAddress No String The private IP to be bound to. If NetworkInterfaceId is specified, PrivateIpAddress must also be specified, which means binding an EIP to the specified private IP of the specified ENI. Make sure that the specified PrivateIpAddress is a private IP on the specified NetworkInterfaceId. The private IP of a specified ENI can be queried through the console or obtained from the privateIpAddress field in the returned value by the API DescribeNetworkInterfaces.

3. Output Parameters

Parameter Name Type Description
RequestId String The unique request ID, which is returned for each request. RequestId is required for locating a problem.

4. Error Codes

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code Description
InvalidAddressId.Blocked The specified EIP is blocked. You cannot bind the EIP until it is unblocked.
InvalidAddressId.NotFound The specified EIP does not exist.
InvalidAddressIdState.InArrears The specified EIP is in arrears.
InvalidAddressIdStatus.NotPermit The specified EIP in the current status cannot be bound. Only EIPs in the UNBIND status can be bound.
InvalidInstance.NotSupported Unsupported instance.
InvalidInstanceId.AlreadyBindEip The specified instance has been bound to an EIP. You need to unbind this EIP before binding another one.
InvalidInstanceId.NotFound Invalid instance ID. The specified instance ID does not exist.
InvalidNetworkInterfaceId.NotFound The specified NetworkInterfaceId does not exist or the specified PrivateIpAddress is not on the NetworkInterfaceId.
InvalidParameterConflict The two parameters conflict with each other, and cannot be both specified. An EIP can only be bound to an instance or a specified private IP of a specified ENI.
InvalidPrivateIpAddress.AlreadyBindEip The specified private IP of the specified ENI has been bound to an EIP. A private IP cannot be bound to more than one EIP.
MissingParameter Parameter is missing. A required parameter is missing in the request.
MissingResourceId The entity to be bound to is missing. Either InstanceId or NetworkInterfaceId and PrivateIpAddress must be specified.

5. Example

Example 1 Bind an EIP to an instance

Input example

https://vpc.tencentcloudapi.com/?Action=AssociateAddress
&AddressId=eip-ek0cdz1g
&InstanceId=ins-1bmpb9tu
&<Common request parameters>

Output example

{
  "Response": {
    "RequestId": "3c140219-cfe9-470e-b241-907877d6fb03"
  }
}

6. Other Resources

Cloud API 3.0 comes with the following development tools to make it easier to call the API.