Detach an elastic network interface (ENI) from an Elastic Compute Service (ECS) instance.
Operation description
Take note of the following items:
-
You cannot detach the primary ENI of an instance.
-
Make sure that the ENI to be detached is in the Detaching (Unbinding) or InUse (Bound) state.
-
Make sure that the instance from which you want to detach an ENI is in the Running (Running) or Stopped (Stopped) state.
-
The DetachNetworkInterface operation is an asynchronous operation. After this operation is called to detach an ENI, you can check the status or events of the ENI to determine whether the ENI is detached. The following figure shows the transitions between the states of the ENI.
- If the ENI is in the Detaching state, the ENI detachment request is sent and the ENI is being detached from the associated instance.
- If the ENI is in the Available state, the ENI is detached from the associated instance.
- If the ENI is stuck in the Detaching state, the ENI may fail to be detached from the associated instance due to specific reasons. For example, the ENI may fail to be detached because the operating system of the instance did not respond to the ENI detachment request. If this issue occurs, you can re-initiate the request to detach the ENI. If the issue persists, restart the instance.
For information about examples on how to call the DetachNetworkInterface operation, see Detach an ENI from an ECS instance.
Debugging
Authorization information
The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:
- Operation: the value that you can use in the Action element to specify the operation on a resource.
- Access level: the access level of each operation. The levels are read, write, and list.
- Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level,
All Resourcesis used in the Resource type column of the operation.
- Condition Key: the condition key that is defined by the cloud service.
- Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
| Operation | Access level | Resource type | Condition key | Associated operation |
|---|---|---|---|---|
| ecs:DetachNetworkInterface | update | *NetworkInterface acs:ecs:{#regionId}:{#accountId}:eni/{#eniId}*Instance acs:ecs:{#regionId}:{#accountId}:instance/{#instanceId} |
| none |
Request parameters
| Parameter | Type | Required | Description | Example |
|---|---|---|---|---|
| RegionId | string | Yes | The ID of the ENI. | cn-hangzhou |
| NetworkInterfaceId | string | Yes | The ID of the instance | eni-bp67acfmxazb4p**** |
| InstanceId | string | Yes | The ID of the trunk ENI. Note
This parameter is unavailable for use.
| i-bp67acfmxazb4p**** |
| TrunkNetworkInstanceId | string | No | The ID of the request. | eni-f8zapqwj1v1j4ia3**** |
Response parameters
Examples
Sample success responses
JSONformat
{
"RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E"
}Error codes
| HTTP status code | Error code | Error message | Description |
|---|---|---|---|
| 400 | MissingParameter | %s | A parameter is not specified. |
| 400 | UnsupportedParameter | %s | The parameter is not supported. |
| 400 | InvalidParameter | %s | The specified parameter is invalid. |
| 400 | InvalidInstanceID.Malformed | %s | The specified InstanceId parameter is invalid. |
| 400 | InvalidOperation.InvalidRegion | %s | The specified RegionId parameter is invalid. |
| 400 | InvalidOperation.InvalidEcsState | %s | - |
| 400 | InvalidOperation.InvalidEniState | %s | - |
| 400 | InvalidOperation.DetachPrimaryEniNotAllowed | %s | - |
| 400 | Forbidden.RegionId | %s | The service is unavailable in the current region. |
| 400 | InvalidParams.EniId | %s | The specified EniId parameter is invalid. |
| 400 | InvalidParameter.EniNotBelongEcs | %s | - |
| 400 | InvalidOperation.EniHotPlugNotSupported | The ENI with high-performance traffic mode cannot be hot-plugged. Please stop the ECS instance to which the ENI is attached, and try again. | An ENI with high-performance communication mode enabled does not support hot unplugging. Stop the ECS instance to which the ENI is mounted and try again. |
| 403 | InvalidUserType.NotSupported | %s | Your account does not support this operation. |
| 403 | Abs.InvalidAccount.NotFound | %s | Your Alibaba Cloud account does not exist or your AccessKey pair has expired. |
| 403 | Forbidden.NotSupportRAM | %s | RAM users are not authorized to perform this operation. |
| 403 | Forbidden.SubUser | %s | You are not authorized to manage this resource. Contact the owner of the Alibaba Cloud account for authorization. |
| 403 | MaxEniCountExceeded | %s | The maximum number of ENIs that can be managed has been reached. |
| 403 | EniPerInstanceLimitExceeded | %s | The maximum number of ENIs that can be attached to the specified instance has been reached. |
| 403 | InvalidOperation.AvailabilityZoneMismatch | %s | The operation is invalid. |
| 403 | InvalidOperation.VpcMismatch | %s | The operation is invalid. Check whether the VPC in the operation corresponds to other parameters. |
| 403 | SecurityGroupInstanceLimitExceed | %s | - |
| 403 | InvalidSecurityGroupId.NotVpc | %s | The specified SecurityGroupId parameter is invalid and the network type of the security group is not VPC. |
| 403 | InvalidOperation.InvalidEniType | %s | - |
| 403 | InvalidOperation.EniServiceManaged | %s | The operation is invalid. |
| 403 | InvalidOperation.EniLinked | %s | The operation is invalid because the current ENI of the instance is associated with other ENIs. You must disassociate the ENI from the other ENIs before you can unbind the ENI from the instance. |
| 403 | InvalidInstanceId.NotFound | %s | The specified instance does not exist. Check whether the InstanceId parameter is valid. |
| 403 | InvalidOperation.HotPlugNotSupport | %s | The operation is not supported while the specified resource is running. For more information, see the return value of the %s placeholder in the error message. |
| 403 | InvalidOperation.InvalidTrunkEniStatus | %s | - |
| 403 | InvalidOperation.TrunkingIsNotAllowed | %s | - |
| 403 | InvalidOperation.InstanceTypeNotSupportEniTrunking | %s | - |
| 403 | InvalidParameter.EniNotBelongTrunk | %s | The specified ENI is not in trunk mode. For more information, see the return value of the %s placeholder in the error message. |
| 403 | InvalidOperation.EniTypeNotSupportTrunking | %s | The type of the ENI does not support operations related to the trunk mode. For more information, see the return value of the %s placeholder in the error message. |
| 403 | InvalidOperation.HasMemberEniAttached | %s | Other ENIs are attached to the ENI that works in trunk mode. For more information, see the return value of the %s placeholder in the error message. |
| 404 | InvalidEcsId.NotFound | %s | The specified instance ID does not exist. |
| 404 | InvalidEniId.NotFound | %s | The specified ENI ID does not exist. |
| 404 | InvalidVSwitchId.NotFound | %s | The specified vSwitch does not exist. |
| 404 | InvalidSecurityGroupId.NotFound | %s | The specified security group ID does not exist. |
For a list of error codes, visit the Service error codes.
Change history
| Change time | Summary of changes | Operation |
|---|---|---|
| 2024-09-24 | The Error code has changed | View Change Details |
| 2023-11-15 | The Error code has changed | View Change Details |