Last updated: 2018-10-12 16:02:31

1. API Description

Domain name for API request:

This API (ResetInstancesPassword) is used to reset the password of the instance operating system to a user-defined one.

  • This API only modifies the password of administrator account. The administrator account ID varies with the operating system of instance (Administrator for Windows, ubuntu for Ubuntu, and root for other systems).
  • To reset the password for a running instance, you need to explicitly specify the parameter ForceStop for a forced shutdown. If not, you can only reset password for the instances that have been shut down.
  • Batch operations are supported. Reset the passwords of multiple instance operating systems to the same value. A maximum of 100 instances are allowed in a batch for each request.

A maximum of 10 requests can be initiated per second for this API.

Note: This API supports Finance regions. If the common parameter Region is a Finance region, a domain name with the Finance region needs to be specified, for example:

2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common parameter. The value used for this API: ResetInstancesPassword
Version Yes String Common parameter. The value used for this API: 2017-03-12
Region Yes String Common parameter. For more information, please see the list of regions supported by the product.
InstanceIds.N Yes Array of String ID(s) of one or more instances you are working with. You can obtain the parameter value from the InstanceId field value in the returned result of API DescribeInstances. A maximum of 100 instances are allowed for each request.
Password Yes String Instance login password. Password complexity requirement varies with different operating systems, as shown below:
  • Password for a Linux instance should be a combination of 8 to 16 characters comprised of at least two of the following types: [a-z, A-Z], [0-9], and [( ) ~ ~ ! @ # $ % ^ & * - + = _ &#124; { } [ ] : ; ' < > , . ? /]. The password cannot start with /.
  • The password for a Windows instance should be a combination of 12-16 characters comprised of at least three of the following types: [a-z], [A-Z], [0-9], and [( ) ~ ~ ! @ # $ % ^ & * - + = _ &#124; { } [ ] : ; ' < > , . ? /]. The password cannot start with /.
  • If both Linux and Windows instances are included, the password complexity is subject to the requirement for a Windows instance.
  • UserName No String Username of the instance operating system for which the password needs to be reset. It cannot exceed 64 characters.
    ForceStop No Boolean Indicates whether to perform a forced shutdown on a running instance. It is recommended to manually shut down the running instance before resetting the user password. Supported values:
  • TRUE: Perform a forced shutdown
  • FALSE: Do not perform a forced shutdown

    Default: FALSE.

    Just like powering off a physical PC, a forced shutdown may cause data loss or the corruption of file system. Be sure to perform forced shutdown only when the server cannot be shut down normally.
  • 3. Output Parameters

    Parameter Name Type Description
    RequestId String The unique request ID, which is returned for each request. RequestId is required for locating a problem.

    4. Error Codes

    The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

    Error Code Description
    InternalServerError Internal error.
    InvalidInstance.NotSupported Unsupported instance.
    InvalidInstanceId.Malformed Invalid instance ID. Specified instance ID is not in a correct format. For example, ins-1122 has an invalid instance ID length.
    InvalidInstanceId.NotFound No instance found.
    InvalidParameterValue Invalid parameter value. The parameter value is in an incorrect format or is not supported.
    InvalidParameterValue.LimitExceeded Number of parameter values exceeds the limit.
    InvalidParameterValue.TooLong Invalid parameter value. The parameter value is too long.
    InvalidPassword Invalid password. The specified password does not conform to the rule of password complexity. For example, the password length does not meet the requirement.
    MissingParameter Parameter is missing. A required parameter is missing in the request.

    5. Example

    Example 1 Reset a password for a Linux/Windows instance

    Input example
    &<Common request parameters>

    Output example

      "Response": {
        "RequestId": "6ef60bec-0242-43af-bb20-270359fb54a7"