ModifyInstanceAttribute

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

The ID of the instance.

The password of the instance. The password must be 8 to 30 characters in length and contain at least three of the following character types: uppercase letters, lowercase letters, digits, and special characters. Special characters include

( ) ` ~ ! @ # $ % ^ & * - _ + = | { } [ ] : ; ' < > , . ? /  

Passwords of Windows instances cannot start with a forward slash (/).

The hostname of the instance. After the hostname is modified, call the RebootInstance operation for the new hostname to take effect.

• For Windows Server, the hostname must be 2 to 15 characters in length and can contain letters, digits, and hyphens (-). It cannot start or end with a hyphen (-), contain consecutive hyphens (-), or contain only digits.
• For other operating systems such as Linux, the hostname must be 2 to 64 characters in length. You can use periods (.) to separate a hostname into multiple segments. Each segment can contain letters, digits, and hyphens (-). The hostname cannot contain consecutive periods (.) or hyphens (-). It cannot start or end with a period (.) or a hyphen (-).

The name of the instance. The name must be 2 to 128 characters in length and can contain letters, digits, colons (:), underscores (_), and hyphens (-). It must start with a letter and cannot start with http:// or https://.

The description of the instance. The description must be 2 to 256 characters in length and cannot start with http:// or https://.

This parameter is empty by default.

The user data of the instance. User data is encoded in Base64.

The size of the user data must be no greater than 16 KB before it is encoded in Base64. User data is imported in plaintext. We recommend that you do not include confidential information such as passwords and private keys in the user data. If confidential information is required, we recommend that you encrypt the confidential information and encode it in Base64 before you import the confidential information. You can then decrypt the information within your ECS instance in the same mode after the information is passed.

Specifies whether the instance can be recycled.

The performance mode of the burstable instance. Valid values:

• Standard: the standard mode. For more information, see the "Standard mode" section in Burstable instances.
• Unlimited: the unlimited mode. For more information, see the "Unlimited mode" section in Burstable instances.

This parameter is empty by default.

The release protection property of the instance. It specifies whether you can use the ECS console or call the DeleteInstance operation to manually release the instance.

This parameter is empty by default.

The ID of replacement security group N.

• All security group IDs must be unique.
• The instance is moved from the current security groups to the replacement security groups. If you want the instance to remain in the current security groups, you must add the IDs of the current security groups to the list.
• You can move the instance to security groups of a different type. However, the list cannot contain the IDs of both basic and advanced security groups at the same time.
• The specified security group and instance must belong to the same VPC.
• The valid values of N are based on the maximum number of security groups to which an instance can belong. For more information, see the "Security group limits" section of the Limits topic.
• New security groups become valid for corresponding instances after a short latency.

The queue number of the primary ENI.

The ID of the request.