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Creating an AS Configuration

Updated on 2022-08-15 GMT+08:00

Function

This API is used to create an AS configuration.

  • An AS configuration is a template specifying specifications for the instances to be added to an AS group.
  • The AS configuration is decoupled from the AS group. An AS configuration can be used by multiple AS groups.
  • Up to 100 AS configurations can be created for each user.

URI

POST /autoscaling-api/v1/{project_id}/scaling_configuration

Table 1 Parameter description

Parameter

Mandatory

Type

Description

project_id

Yes

String

Specifies the project ID.

Request Message

  • Request parameters
    Table 2 Request parameters

    Parameter

    Mandatory

    Type

    Description

    scaling_configuration_name

    Yes

    String

    Specifies the AS configuration name. The name contains only letters, digits, underscores (_), and hyphens (-), and cannot exceed 64 characters.

    instance_config

    Yes

    Object

    Specifies the ECS configuration. For details, see Table 3.

    Table 3 instance_config field description

    Parameter

    Mandatory

    Type

    Description

    instance_id

    No

    String

    Specifies the ECS ID. When using the existing ECS specifications as the template to create AS configurations, specify this parameter. In this case, the flavorRef, imageRef, disk, tenancy, dedicated_host_id, and security_groups fields do not take effect.

    If the instance_id field is not specified, flavorRef, imageRef, and disk fields are mandatory.

    flavorRef

    No

    String

    Specifies the ECS flavor ID. A maximum of 10 flavors can be selected. Use a comma (,) to separate multiple flavor IDs. You can obtain its value from the API for querying details about flavors and extended flavor information.

    imageRef

    No

    String

    Specifies the image ID. Its value is the same as that of image_id for specifying the image selected during ECS creation. Obtain the value using the API for querying images. .

    disk

    No

    Array of disk objects

    Specifies the disk group information. System disks are mandatory and data disks are optional. For details, see Table 4.

    key_name

    No

    String

    Specifies the name of the SSH key pair used to log in to the ECS.

    NOTE:

    If both key_name and user_data are specified, user_data only injects user data.

    personality

    No

    Array of personality objects

    Specifies information about the injected file. Only text files can be injected. A maximum of five files can be injected at a time and the maximum size of each file is 1 KB. For details, see Table 6.

    public_ip

    No

    public_ip object

    Specifies the EIP of the ECS. The EIP can be configured in two ways. For details, see Table 7.

    • Do not use an EIP. In this case, this parameter is unavailable.
    • Automatically assign an EIP. You need to specify the information about the new EIP.

    user_data

    No

    String

    Specifies the user data to be injected during the ECS creation process. Text, text files, and gzip files can be injected.

    Constraints:

    • The content to be injected must be encoded with base64. The maximum size of the content to be injected (before encoding) is 32 KB.
    • If key_name is not specified, the data injected by user_data is the password of user root for logging in to the ECS by default.
    • This parameter is mandatory when you create a Linux ECS using the password authentication mode. Its value is the initial user root password.

    Password complexity requirements:

    • Consists of 8 to 26 characters.
    • Contains at least three of the following character types: uppercase letters, lowercase letters, digits, and special characters (!@$%^-_=+[{}]:,./?).

    Examples:

    • Use a plaintext password (risky in security), for example, Cloud.1234.
      #! /bin/bash
      echo 'root:Cloud.1234' | chpasswd ;
    • Use a ciphertext password (recommended)
      #! /bin/bash
      echo 'root:$6$V6azyeLwcD3CHlpY$BN3VVq18fmCkj66B4zdHLWevqcxlig' | chpasswd -e

    In the preceding command output, $6$V6azyeLwcD3CHlpY$BN3VVq18fmCkj66B4zdHLWevqcxlig is the ciphertext password, which can be generated as follows:

    1. Generate an encrypted salt value.

    [root@test linux]# python -c "import crypt, getpass, pwd;print crypt.mksalt()"  $6$V6azyeLwcD3CHlpY

    2. Generate a ciphertext password based on the salt value.

    [root@test linux]# python -c "import crypt, getpass, pwd;print crypt.crypt('Cloud.1234','\$6\$V6azyeLwcD3CHlpY')"   $6$V6azyeLwcD3CHlpY$BN3VVq18fmCkj66B4zdHLWevqcxlig

    Examples:

    • Linux
      #! /bin/bash
      echo user_test >> /home/user.txt
    • Windows
      rem cmd
      echo 111 > c:\aaa.txt
    NOTE:

    Data injection is not supported for ECSs that use a Linux image and the password login mode.

    metadata

    No

    metadata object

    Specifies the ECS metadata. For details, see Table 10.

    NOTE:
    • This parameter is mandatory when a Windows ECS with password authentication is created.
    • This parameter does not allow users to write data. It is mandatory when the ECS is to be created using a Windows image.

    security_groups

    No

    Array of security_groups objects

    Specifies security groups. For details, see Table 11.

    If the security group is specified both in the AS configuration and AS group, scaled ECS instances will be added to the security group specified in the AS configuration. If the security group is not specified in either of them, scaled ECS instances will be added to the default security group. For your convenience, you are advised to specify the security group in the AS configuration.

    server_group_id

    No

    String

    Specifies the ECS group ID.

    tenancy

    No

    String

    Specifies that ECSs are created on DeHs. Options:

    • dedicated: Specifies that ECSs are created on DeHs.
    • This parameter is not specified.

    dedicated_host_id

    No

    String

    Specifies the ID of a DeH.

    NOTE:
    • This parameter is valid only when tenancy is set to dedicated.
    • If this parameter is specified, ECSs will be created on a specified DeH.
    • If this parameter is not specified, the system automatically selects the DeH with the maximum available memory size from the DeHs that meet specifications requirements to create the ECSs, thereby balancing load of the DeHs.

    multi_flavor_priority_policy

    No

    String

    Specifies the priority policy used when there are multiple flavors and instances to be created using an AS configuration.

    • PICK_FIRST (default): When an ECS is added for capacity expansion, the target flavor is determined in the order in the flavorRef list.
    • COST_FIRST: When an ECS is added for capacity expansion, the target flavor is determined for minimal expenses.

    market_type

    No

    String

    Specifies a billing mode for an ECS. The options are as follows:

    • Pay-per-use, which is not specified
    • Spot pricing
    NOTE:

    For a Linux ECS, its password can be injected only using userdata. For a Windows ECS, its password can be injected only using metadata admin_pass.

    Table 4 disk field description

    Parameter

    Mandatory

    Type

    Description

    size

    Yes

    Integer

    Specifies the disk size. The unit is GB.

    The system disk size ranges from 1 to 1024 and must be greater than or equal to the minimum size (min_disk value) of the system disk specified in the image.

    The data disk size ranges from 10 to 32768.

    volume_type

    Yes

    String

    Specifies the ECS system disk type. The disk type must match the available disk type.

    • SATA: common I/O disk type
    • SAS: high I/O disk type
    • SSD: ultra-high I/O disk type
    • co-p1: high I/O (performance-optimized I) disk type
    • uh-l1: ultra-high I/O (latency-optimized) disk type

    If the specified disk type is not available in the AZ, the disk will fail to create.

    NOTE:

    For HANA, HL1, and HL2 ECSs, use co-p1 and uh-l1 disks. For other ECSs, do not use co-p1 or uh-l1 disks.

    disk_type

    Yes

    String

    Specifies a disk type. The options are as follows:

    • DATA: indicates a data disk.
    • SYS: indicates a system disk.
      NOTE:

      System disk encryption is not supported.

    dedicated_storage_id

    No

    String

    Specifies a DSS device ID for creating an ECS disk.

    NOTE:

    Specify DSS devices for all disks in an AS configuration or not. If DSS devices are specified, all the data stores must belong to the same AZ, and the disk types supported by a DSS device for a disk must be the same as the volume_type value.

    data_disk_image_id

    No

    String

    Specifies the ID of a data disk image used to export data disks of an ECS.

    snapshot_id

    No

    String

    Specifies the disk backup snapshot ID for restoring the system disk and data disks using a full-ECS backup when a full-ECS image is used.

    NOTE:

    Each disk in an AS configuration must correspond to a disk backup in the full-ECS backup by snapshot_id.

    metadata

    No

    metadata object

    Specifies the metadata for creating disks. For details, see Table 5.

    Table 5 metadata Field Description for Creating Disks

    Parameter

    Mandatory

    Type

    Description

    __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 disk will not be encrypted by default.

    NOTE:

    System disk encryption is not supported.

    __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.
    • System disk encryption is not supported.
    Table 6 personality field description

    Parameter

    Mandatory

    Type

    Description

    path

    Yes

    String

    Specifies the path of the injected file.

    • For Linux OSs, specify the path, for example, /etc/foo.txt, for storing the injected file.
    • For Windows, the injected file is automatically stored in the root directory of drive C. You only need to specify the file name, for example, foo. The file name contains only letters and digits.

    content

    Yes

    String

    Specifies the content of the injected file.

    The value must be the information after the content of the injected file is encoded using Base64.

    Table 7 public_ip field description

    Parameter

    Mandatory

    Type

    Description

    eip

    Yes

    eip object

    Specifies the EIP automatically assigned to the ECS. For details, see Table 8.

    Table 8 eip field description

    Parameter

    Mandatory

    Type

    Description

    ip_type

    Yes

    String

    Specifies the EIP type.

    Enumerated values of the IP address type:

    • 5_bgp: indicates the dynamic BGP.
    • 5_sbgp: indicates the static BGP.
    • 5_telcom: indicates China Telecom.
    • 5_union: indicates China Unicom.

    bandwidth

    Yes

    bandwidth object

    Specifies the bandwidth of an IP address. For details, see Table 9.

    Table 9 bandwidth field description

    Parameter

    Mandatory

    Type

    Description

    size

    No

    Integer

    Specifies the bandwidth (Mbit/s). The value range for bandwidth billed by duration is 1 to 2000 and that for bandwidth billed by traffic is 1 to 300.

    NOTE:
    • If share_type is set to PER, this parameter is mandatory. If share_type is set to WHOLE, this parameter is invalid.
    • The specific range may vary depending on the configuration in each region. You can see the bandwidth range of each region on the management console.
    • The minimum unit for bandwidth varies depending on the bandwidth range.
      • The minimum unit is 1 Mbit/s if the allowed bandwidth size ranges from 0 to 300 Mbit/s (with 300 Mbit/s included).

    share_type

    Yes

    String

    Specifies the bandwidth sharing type.

    Enumerated values of the sharing type:

    • PER: dedicated
    • WHOLE: shared

    charging_mode

    No

    String

    Specifies the bandwidth billing mode.

    The options are as follows:

    • bandwidth: billed by bandwidth.
    • traffic: billed by traffic.
    If the parameter value is out of the preceding options, creating the ECS will fail.
    NOTE:
    • If share_type is set to PER, this parameter is mandatory.
    • If share_type is set to WHOLE, this parameter is invalid.

    id

    No

    String

    Specifies the bandwidth ID. When using a shared bandwidth, you can select an existing shared bandwidth to create an EIP.

    NOTE:
    • If share_type is set to PER, this parameter is invalid.
    • If share_type is set to WHOLE, this parameter is mandatory.
    Table 10 metadata field description

    Parameter

    Mandatory

    Type

    Description

    admin_pass

    No

    String

    Specifies the initial login password of the administrator account for logging in to an ECS using password authentication. The Linux administrator is root, and the Windows administrator is Administrator.

    Password complexity requirements:
    • Consists of 8 to 26 characters.
    • Contains at least three of the following character types: uppercase letters, lowercase letters, digits, and special characters !@$%^-_=+[{}]:,./?
    • The password cannot contain the username or the username in reversed order.
    • The Windows ECS password cannot contain the username, the username in reversed order, or more than two consecutive characters in the username.
    Table 11 security_groups field description

    Parameter

    Mandatory

    Type

    Description

    id

    Yes

    String

    Specifies the ID of the security group.

  • Example request
    This example shows how to create an AS configuration with name as-config-tlzp, image ID 627a1223-2ca3-46a7-8d5f-7aef22c74ee6, flavor ID s3.xlarge.4, 40 GB SATA system disk, and SSH key name 100vm_key.
    POST https://{Endpoint}/autoscaling-api/v1/{project_id}/scaling_configuration
    
    { 
        "scaling_configuration_name": "as-config-tlzq", 
        "instance_config": { 
            "flavorRef": "s3.xlarge.4", 
            "imageRef": "627a1223-2ca3-46a7-8d5f-7aef22c74ee6", 
            "disk": [ 
                { 
                    "size": 40, 
                    "volume_type": "SATA", 
                    "disk_type": "SYS" 
                } 
            ], 
            "key_name": "100vm_key" ,
    	"security_groups": [{
    		"id": "6c22a6c0-b5d2-4a84-ac56-51090dcc33be"
    	}], 
            "multi_flavor_priority_policy": "PICK_FIRST"
        } 
    }
    

Response Message

  • Response parameters
    Table 12 Response parameters

    Parameter

    Type

    Description

    scaling_configuration_id

    String

    Specifies the AS configuration ID.

  • Example response
    {
        "scaling_configuration_id": "f8327883-6a07-4497-9a61-68c03e8e72a2"
    }

Returned Values

  • Normal

    200

  • Abnormal

    Returned Value

    Description

    400 Bad Request

    The server failed to process the request.

    401 Unauthorized

    You must enter the username and password to access the requested page.

    403 Forbidden

    You are forbidden to access the requested page.

    404 Not Found

    The server could not find the requested page.

    405 Method Not Allowed

    You are not allowed to use the method specified in the request.

    406 Not Acceptable

    The response generated by the server could not be accepted by the client.

    407 Proxy Authentication Required

    You must use the proxy server for authentication so that the request can be processed.

    408 Request Timeout

    The request timed out.

    409 Conflict

    The request could not be processed due to a conflict.

    500 Internal Server Error

    Failed to complete the request because of an internal service error.

    501 Not Implemented

    Failed to complete the request because the server does not support the requested function.

    502 Bad Gateway

    Failed to complete the request because the request is invalid.

    503 Service Unavailable

    Failed to complete the request because the system is unavailable.

    504 Gateway Timeout

    A gateway timeout error occurred.

Error Codes

See Error Codes.

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