Modify the instance password
Updated at：2025-10-20
This API is used to change the administrator password for a specified virtual machine.
- This API can only be called for instances that are either Running or Stopped. If not, a 409 error will be returned.
Request structure
Plain Text
1PUT /v{version}/instance/{instanceId}?{action} HTTP/1.1
2Host: bcc.bj.baidubce.com
3Authorization: authorization string
4{
5 "adminPass": adminPass
6}Request headers
There are no special headers required beyond the common headers.
Request parameters
| Parameter name | Types | Whether required | Parameter location | Description |
|---|---|---|---|---|
| version | String | Yes | URL parameter | API version number |
| instanceId | String | Yes | URL parameter | Specified instance ID |
| action | String | Yes | Query | Action executed on the instance, current value: changePass |
| adminPass | String | Yes | Request Body parameters | Instance administrator password to be specified: 8-32 characters; it must contain English letters, numbers, and symbols (limited to !@#$%^*()) simultaneously. Password must be encrypted during transmission. The password must be encrypted for transmission. For details, see the [Password Encryption Transmission Specification](BCC/API Reference/General Description.md#Password encryption transmission specification) |
Response headers
No special headers are required beyond the standard ones.
Response parameters
There are no special response parameters
Error codes
| Error code | Error description | HTTP status code | Chinese explanation |
|---|---|---|---|
| Instance.PasswordOperationForbidden | Instance not stopped when changing password. | 409 | Passwords of instances in the Stopped status can be modified |
Request example
Plain Text
1PUT /v2/instance/i-YufwpQAe?changePass HTTP/1.1
2Host: bcc.bj.baidubce.com
3ContentType: application/json
4Authorization: bce-auth-v1/f81d3b34e48048fbb2634dc7882d7e21/2015-08-11T04:17:29Z/3600/host/74c506f68c65e26c633bfa104c863fffac5190fdec1ec24b7c03eb5d67d2e1de
5
6{
7 "adminPass": "c5b31add-ffe0-44b0-86eb-063109a1b6fe"
8}Response example
Plain Text
1HTTP/1.1 200 OK
2x-bce-request-id: 1214cca7-4ad5-451d-9215-71cb844c0a50
3Date: Wed, 03 Dec 2014 06:42:19 GMT
4Content-Type: application/json;charset=UTF-8
5Server: BWS