Associates a high-availability virtual IP address (HAVIP) with an Elastic Compute Service (ECS) instance in a virtual private cloud (VPC).

When you call this operation, note that:

  • The HAVIP takes effect immediately after it is associated with an ECS instance in a VPC. You do not need to restart the ECS instance. However, you must configure the HAVIP on the instance network interface controller (NIC).
  • The HAVIP and ECS instance must belong to the same VSwitch.
  • You can associate an HAVIP with at most two ECS instances.
  • The ECS instance must be in the Running or Stopped state.
  • The HAVIP must be in the Available or InUse state.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes AssociateHaVip

The operation that you want to perform. Set the value to AssociateHaVip.

HaVipId String Yes havip-2zeo05qre24nhrqpy****

The ID of the HAVIP to be associated with the ECS instance.
InstanceId String Yes i-faf344422ffsfad****

The ID of the ECS instance to be associated with the HAVIP.
RegionId String Yes cn-shanghai

The region ID of the HAVIP.

You can call the DescribeRegions operation to query region IDs.

ClientToken String No 0c593ea1-3bea-11e9-b96b-88e9fe637760

The client token that is used to guarantee the idempotence of the request. You can use the client to generate a value that is unique among different requests. ClientToken supports only ASCII characters.

It can contain up to 64 ASCII characters.

Response parameters

Parameter Type Example Description
RequestId String C44F62BE-9CE7-4277-B117-69243F3988BF

The request ID.

Examples

Sample requests

https://vpc.aliyuncs.com/?Action=AssociateHaVip
&HaVipId=havip-2zeo05qre24nhrqpy****
&InstanceId=i-faf344422ffsfad****
&RegionId=cn-shanghai
&<Common request parameters>

Sample success responses

XML format 

<AssociateHaVipResponse> 
  <RequestId>C44F62BE-9CE7-4277-B117-69243F3988BF</RequestId> 
</AssociateHaVipResponse>

JSON format 

{ 
"RequestId": "C44F62BE-9CE7-4277-B117-69243F3988BF" 
}

Error codes

HttpCode Error code Error message Description
404 InvalidHaVipId.NotFound The specified HaVip does not exist in the specified region. The error message returned because the HAVIP does not exist in the specified region. Check whether the region is correct.
404 InvalidInstanceId.NotFound The specified Instance does not exist in the specified region. The error message returned because the instance does not exist in the specified region.
400 IncorrectHaVipStatus HaVip can be operated by this action only when it's status is Available or InUse. The error message returned because this operation can be performed only when the HAVIP is in the Available or InUse state.
400 CountLimitExceed.HaVipOnInstance The amount of HaVip associated with the specified Instance reach its limits. The error message returned because the number of HAVIPs exceeds the quota of the instance.
400 CountLimitExceeded.HaVipOnECSInstance The amount of Instance associated with the specified HaVip reach its limits. The error message returned because the number of HAVIPs exceeds the quota of the instance.

For a list of error codes, visit the API Error Center.