Changes the deployment set of an Elastic Compute Service (ECS) instance or migrates an ECS instance to a dedicated host. You can change the instance type of an instance when you migrate the instance.

Description

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

  • The instance must be in the Stopped (Stopped) state. The instance is automatically restarted after it is migrated.
  • The network type of the instance must be Virtual Private Cloud (VPC).
  • The instance and the destination dedicated host to which to migrate the instance must belong to the same account and reside in the same region and zone.
  • A pay-as-you-go instance can be migrated to a subscription dedicated host. A subscription instance can be migrated only between subscription dedicated hosts. The expiration date of the subscription instance cannot be later than that of the destination dedicated host.
  • You can migrate only pay-as-you-go instances from a shared host to a dedicated host. You cannot migrate subscription or preemptible instances from a shared host to a dedicated host.
  • You can redeploy an instance to a specific dedicated host cluster.

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 ModifyInstanceDeployment

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

RegionId String Yes cn-hangzhou

The region ID of the instance. You can call the DescribeRegions operation to query the most recent region list.

InstanceId String Yes i-bp67acfmxazb4ph***

The ID of the instance.

DedicatedHostId String No dh-bp67acfmxazb4ph****

The ID of the destination dedicated host. You can call the DescribeDedicatedHosts operation to query the most recent list of dedicated hosts.

When you migrate an instance from a shared host to a dedicated host or between dedicated hosts, take note of the following items:

  • To migrate the instance to a specific dedicated host, you must specify this parameter.
  • To migrate the instance to a system-selected dedicated host, you must leave this parameter empty and set Tenancy to host.

For information about the automatic deployment feature, see Features of dedicated hosts.

DeploymentSetId String No ds-bp67acfmxazb4ph****

The ID of the destination deployment set.

This parameter is required when you add an ECS instance to a deployment set or change the deployment set of an instance.

Note You cannot change the deployment set when you modify dedicated host-related parameters, including Tenancy, Affinity, and DedicatedHostId.
DeploymentSetGroupNo Integer No 3

The number of the deployment set group in which to deploy the instance in the destination deployment set. This parameter is valid only when the destination deployment set uses the high availability group strategy (AvailabilityGroup). Valid values: 1 to 7.

Note If you call this operation with this parameter left empty to deploy a specified instance to a deployment set that uses the high availability group strategy (AvailablilityGroup), the system evenly distributes ECS instances among the deployment set groups in the deployment set. If you call this operation to change the deployment set of an instance and specify the current deployment set of the instance as the destination deployment set, the system evenly distributes ECS instances again among the deployment set groups in the deployment set.
Force Boolean No false

Specifies whether to forcibly change the host of the instance when the deployment set of the instance is changed. Valid values:

  • true: forcibly changes the host of the instance when the deployment set of the instance is changed. Hosts can be forcibly changed only for instances in the Running (Running) or Stopped (Stopped) state. The instances in the Stopped (Stopped) state do not include pay-as-you-go instances that are stopped in economical mode.
    Note If the specified instance has local disks attached, the local disks are forcibly changed when the host of the instance is forcibly changed. This may cause data loss in the local disks. Proceed with caution.
  • false: does not forcibly change the host of the instance when the deployment set of the instance is changed. You can add the instance to a deployment set only when the instance remains on the current host. When the Force parameter is set to false, the deployment set may fail to be changed.

Default value: false.

Affinity String No host

Specifies whether to associate the instance with a dedicated host. Valid values:

  • host: associates the instance with a dedicated host. When you start a stopped instance in economical mode, the instance remains on its original dedicated host.
  • default: does not associate the instance with a dedicated host. When you start a stopped instance in economical mode, the instance can be automatically deployed to another dedicated host in the automatic deployment resource pool if resources of the original dedicated host are insufficient.

When an instance is migrated from a shared host to a dedicated host, this parameter is set to default by default.

Tenancy String No host

Specifies whether to deploy the instance on a dedicated host. Set the value to host to deploy the instance on a dedicated host.

MigrationType String No live

Specifies whether to stop the instance before it is migrated to the destination dedicated host. Valid values:

  • reboot: stops the instance before it is migrated.
  • live: migrates the instance without stopping it. If you set the MigrationType parameter to live, you must specify the DedicatedHostId parameter. In this case, you cannot change the instance type of the instance when the instance is migrated.

Default value: reboot.

InstanceType String No ecs.c6.large

The instance type to which the instance is changed. You can call the DescribeInstanceTypes operation to query the most recent list of instance types.

You can change the instance type of an instance when you migrate the instance to a dedicated host. The new instance type must match the type of the specified dedicated host. For more information, see Dedicated host types.

  • If you specify this parameter, you must also specify the DedicatedHostId parameter.
  • You cannot change the instance type of an instance if you use the automatic deployment feature to migrate the instance.
DedicatedHostClusterId String No dc-bp67acfmxazb4ph****

The ID of the dedicated host cluster.

Response parameters

Parameter Type Example Description
RequestId String 04F0F334-1335-436C-A1D7-6C044FE73368

The ID of the request.

Examples

Sample requests

https://ecs.aliyuncs.com/?Action=ModifyInstanceDeployment
&InstanceId=i-bp67acfmxazb4ph****
&RegionId=cn-hangzhou
&DedicatedHostId=dh-bp67acfmxazb4ph****
&Tenancy=host
&MigrationType=live
&<Common request parameters>

Sample success responses

XML format 

HTTP/1.1 200 OK
Content-Type:application/xml

<ModifyInstanceDeploymentResponse>
	<RequestId>04F0F334-1335-436C-A1D7-6C044FE73368</RequestId>
</ModifyInstanceDeploymentResponse>

JSON format 

HTTP/1.1 200 OK
Content-Type:application/json

{
  "RequestId" : "04F0F334-1335-436C-A1D7-6C044FE73368"
}

Error codes

HTTP status code Error code Error message Description
400 OperationDenied.UnstoppedInstance Operation denied due to unstopped instance. The error message returned because the operation is invalid. Check whether the instance is in the Stopped state.
400 InvalidDedicatedHostStatus.NotSupport Operation denied due to dedicated host status. The error message returned because the operation is not supported while the dedicated host is in the current state.
400 InvalidPeriod.ExceededDedicatedHost Instance expired date can't exceed dedicated host expired date. The error message returned because the expiration date of the instance is later than that of the dedicated host.
400 InvalidParam.Tenancy The specified Tenancy is invalid. The error message returned because the specified Tenancy parameter is invalid.
400 ChargeTypeViolation.PostPaidDedicatedHost Prepaid instance onto postpaid dedicated host is not allowed. The error message returned because subscription instances cannot be deployed on pay-as-you-go dedicated hosts.
400 InvalidDedicatedHostId.NotFound The specified DedicatedHostId does not exist. The error message returned because the specified DedicatedHostId parameter does not exist.
400 InvalidInstanceType.ValueNotSupported The specified InstanceType does not exist or beyond the permitted range. The error message returned because the specified InstanceType parameter does not exist or because you are not authorized to manage instances of the specified instance type.
403 IncorrectInstanceStatus %s The error message returned because the operation is not supported while the instance is in the current state.
403 OperationDenied.NoStock The resource is out of usage. The error message returned because the instance is not in the Running state. Start the instance or check whether the operation is valid.
404 InvalidInstanceId.NotFound The specified InstanceId does not exist. The error message returned because the specified InstanceId parameter is invalid.
404 InvalidInstanceNetworkType.NotSupport The specified Instance network type not support. The error message returned because the network type of the instance does not support this operation.
404 InvalidInstanceType.NotSupport The Dedicated host not support the specified instance type. The error message returned because the current dedicated host does not support the specified instance type.

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