Elastic Compute Service:ModifyInstanceSpec

The ID of the instance.

The new instance type. For more information, see Overview of instance families or call the DescribeInstanceTypes operation to query the most recent instance type list.

The maximum outbound public bandwidth. Unit: Mbit/s. Valid values: 0 to 100.

The maximum inbound public bandwidth. Unit: Mbit/s. Valid values:

• When the purchased outbound public bandwidth is less than or equal to 10 Mbit/s, the valid value of this parameter ranges from 1 to 10 and the default value is 10.
• When the purchased outbound public bandwidth is greater than 10 Mbit/s, the valid values of this parameter are 1 to the InternetMaxBandwidthOut value and the default value is the InternetMaxBandwidthOut value.

Specifies whether to submit an asynchronous request. Valid values:

• true
• false

Default value: false.

Specifies whether cross-cluster instance type upgrades are supported. Valid values:

• true
• false

Default value: false.

When you set AllowMigrateAcrossZone to true and upgrade the instance based on the returned information, take note of the following items:

Instance that resides in the classic network:

• For retired instance types, when a non-I/O optimized instance is upgraded to an I/O optimized instance, the private IP address, disk device names, and software authorization codes of the instance change. For a Linux instance, basic disks (cloud) are identified as xvd* such as xvda and xvdb, and ultra disks (cloud_efficiency) and standard SSDs (cloud_ssd) are identified as vd* such as vda and vdb.
• For instance families available for purchase, when the instance type of an instance is changed, the private IP address of the instance changes.

Instance that resides in a virtual private cloud (VPC): For retired instance types, when a non-I/O optimized instance is upgraded to an I/O optimized instance, the disk device names and software authorization codes of the instance change. For a Linux instance, basic disks (cloud) are identified as xvd* such as xvda and xvdb, and ultra disks (cloud_efficiency) and standard SSDs (cloud_ssd) are identified as vd* such as vda and vdb.

The new category of the system disk. Valid values:

• cloud_efficiency: ultra disk
• cloud_ssd: standard SSD

The client token that is used to ensure the idempotence of the request. You can use the client to generate the token, but you must make sure that the token is unique among different requests. The token can contain only ASCII characters and cannot exceed 64 characters in length. For more information, see How to ensure idempotence.

Valid values:

• Online
• Offline

Specifies whether to perform only a dry run, without performing the actual request. Valid values:

• true: performs only a dry run. The system checks the request for potential issues, including missing parameter values, incorrect request syntax, service limits, and unavailable ECS resources. If the request fails the dry run, an error message is returned. If the request passes the dry run, the DryRunOperation error code is returned.
• false (default): performs a dry run and performs the actual request.