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Reviewed-by: OpenTelekomCloud Bot <None>

2022-04-27 16:24:25 +00:00

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Reinstalling an ECS OS (Using an Image with Cloud-Init Installed)

Function

This API is used to reinstall an ECS OS. During the system disk reinstallation using the original image, the data disks of the ECS remain unchanged.

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.

Constraints

You can only use an image with Cloud-Init or Cloudbase-Init installed.
You can reinstall OS only on an ECS that is stopped or for which OS reinstallation has failed.
You are not allowed to reinstall the OS of 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 /v2/{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.
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	Reinstalls an ECS OS. For details, see Table 3.

**Table 3** **os-reinstall** field description
Parameter	Mandatory	Type	Description
keyname	Yes	String	Specifies the key pair name.
userid	Yes	String	Specifies the user ID. This parameter is mandatory when keyname is used.
metadata	No	Object	Specifies metadata of the reinstalled ECS. For more information, see Table 4.

**Table 4** **metadata** field description
Parameter	Mandatory	Type	Description
BYOL	No	String	Specifies whether a user has the license of an image. If this parameter is set to true, the license file delivered with the image is used, indicating that BYOL is used. If this parameter is set to a value other than true, BYOL is not used, and the license file provided by the public cloud platform must be used. The default value is not true, indicating that BYOL is not used.
user_data	No	String	Specifies the user data to be injected to the ECS during the creation. Text and text files can be injected. NOTE: The content of user_data must be encoded with base64. The maximum size of the content to be injected (before encoding) is 32 KB. For more details, see "Injecting User Data into ECSs" in Elastic Cloud Server User Guide. Examples Before base64 encoding: Linux #! /bin/bash echo user_test >> /home/user.txt Windows rem cmd echo 111 > c:\aaa.txt After base64 encoding: Linux IyEgL2Jpbi9iYXNoDQplY2hvIHVzZXJfdGVzdCAmZ3Q7Jmd0OyAvaG9tZS91c2VyLnR4dA== Windows cmVtIGNtZA0KZWNobyAxMTEgJmd0OyBjOlxhYWEudHh0
__system__encrypted	No	String	Specifies encryption in metadata. The value can be 0 (encryption disabled) or 1 (encryption enabled). If this parameter does not exist, the system disk will not be encrypted by default.
__system__cmkid	No	String	Specifies the CMK ID, which indicates encryption in metadata. This parameter is used with __system__encrypted. NOTE: For details about how to obtain the CMK ID, see "Querying the List of CMKs" in Key Management Service API Reference.

Response

See Responses (Task).

Example Request

Example URL request

POST https://{endpoint}/v2/{project_id}/cloudservers/{server_id}/reinstallos

Example request 1 (using a password to remotely log in to an ECS with OS reinstalled)

{
    "os-reinstall": {
        "adminpass": "!QAZxsw2", 
        "userid": "7e25b1da389f4697a79df3a0e5bd494e",
        "mode": "withStopServer"
    }
}

Example request 2 (using a key to remotely log in to an ECS with OS reinstalled)

{
    "os-reinstall": {
        "keyname": "KeyPair-350b", 
        "userid": "7e25b1da389f4697a79df3a0e5bd494e"
    }
}

Example request 3 (using a password to remotely log in a full-ECS-image-created ECS with OS reinstalled and system disk encrypted)

{
    "os-reinstall": {
        "adminpass": "!QAZxsw2", 
        "userid": "7e25b1da389f4697a79df3a0e5bd494e",
        "metadata": {
              "__system__encrypted": "1",
              "__system__cmkid": "83cdb52d-9ebf-4469-9cfa-e7b5b80da846"
        }
    }
}

Parent topic: Status Management

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