Help Center/ Elastic Cloud Server/ API Reference/ APIs (Recommended)/ Status Management/ Reinstalling an ECS OS (Using an Image Without Cloud-Init Installed)
Updated on 2022-09-26 GMT+08:00
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Reinstalling an ECS OS (Using an Image Without Cloud-Init Installed)

Function

This API is used to reinstall an ECS OS.

After this API is called, the system uninstalls the system disk, uses the original image to create a system disk, and attaches it to the ECS. In this way, the OS is reinstalled.

This API supports the images without Cloud-Init or Cloudbase-Init installed. Otherwise, use the API described in Reinstalling an ECS OS (Using an Image with Cloud-Init Installed).

Constraints

  • You cannot reinstall OS on an ECS that does not have the system disk.
  • You are not allowed to perform other operations when reinstalling the OS. Otherwise, reinstalling the OS will fail.

URI

POST /v1/{project_id}/cloudservers/{server_id}/reinstallos

Table 1 describes the parameters in the URI.
Table 1 Parameter description

Parameter

Mandatory

Description

project_id

Yes

Specifies the project ID.

For details about how to obtain the ID, see Obtaining a Project ID.

server_id

Yes

Specifies the ECS ID.

Request

Table 2 describes the request parameters.
Table 2 Request parameters

Parameter

Mandatory

Type

Description

os-reinstall

Yes

Object

Reinstall the ECS. For details, see Table 3.
Table 3 os-reinstall field description

Parameter

Mandatory

Type

Description

adminpass

No

String

Specifies the initial password of the ECS administrator.

The Linux administrator username is root.

Password complexity requirements:

  • 8 to 26 characters
  • The password must contain at least three of the following character types: uppercase letters, lowercase letters, digits, and special characters (!@$%^-_=+[{}]:,./?~#*).
NOTE:
  • Either adminpass or keyname is empty.
  • Either adminpass or keyname is set.

keyname

No

String

Specifies the key name.

Keys can be created using the key creating API (Creating and Importing an SSH Key Pair) or obtained using the SSH key query API (Querying SSH Key Pairs).

userid

No

String

Specifies the user ID.

mode

No

String

Specifies whether the ECS supports OS reinstallation when the ECS is running.

If the parameter value is withStopServer, the ECS supports OS reinstallation when the ECS is running. In such a case, the system automatically stops the ECS before reinstalling its OS.

Response

For details, see Responses (Task).

Example Request

POST https://{endpoint}/v1/{project_id}/cloudservers/{server_id}/reinstallos
{
    "os-reinstall": {
        "keyname": "KeyPair-350b", 
        "userid": "7e25b1da389f4697a79df3a0e5bd494e"
    }
}

Example Response

See Responses (Task).

{      
    "job_id": "70a599e0-31e7-49b7-b260-868f441e862b" 
}

Returned Values

See Returned Values for General Requests.

Error Codes

See Error Codes.

Parent topic: Status Management