Help Center> Auto Scaling> User Guide (Paris Regions) > AS Management> AS Configuration> Creating an AS Configuration from a New Specifications Template
Updated on 2024-03-05 GMT+08:00
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Creating an AS Configuration from a New Specifications Template

Scenarios

If you have special requirements on the ECS instances for resource expansion, use a new specifications template to create the AS configuration. In such a case, ECS instances that have the specifications specified in the template will be added to the AS group in scaling actions.

Procedure

  1. Log in to the management console.
  2. Under Computing, click Auto Scaling.
  3. Click Create AS Configuration.
  4. Set the parameters for the AS configuration. Table 1 lists the AS configuration parameters.
    Table 1 AS configuration parameters

    Parameter

    Description

    Example Value

    Region

    A region is where an AS configuration resides.

    N/A

    Name

    Specifies the name of the AS configuration to be created.

    N/A

    Configuration Template

    Select Create a new specifications template.

    If this option is selected, configure parameters, such as the vCPUs, memory, image, disk, and ECS type, to create a new AS configuration.

    Create a new specifications template

    Specifications

    The public cloud provides various ECS types for different application scenarios.

    For more information, see Elastic Cloud Server User Guide.

    Configure the ECS specifications, including vCPUs, memory, image type, and disk, according to the ECS type.

    Memory-optimized ECS

    Image
    • Public image

      A public image is a standard, widely used image. It contains an OS and preinstalled public applications and is available to all users. You can configure the applications or software in the public image as needed.

    • Private image

      A private image is an image available only to the user who created it. It contains an OS, preinstalled public applications, and the user's private applications. Using a private image to create ECSs frees you from configuring multiple ECSs repeatedly.

    • Shared image

      A shared image is a private image shared by another public cloud user.

    Public image

    Disk
    Includes system and data disks.
    • System Disk

      Common I/O: uses Serial Advanced Technology Attachment (SATA) drives to store data.

      Ultra-high I/O: uses solid state disk (SSD) drives to store data.

    • Data Disk

      You can create multiple data disks for an ECS instance. In addition, you can specify a data disk image for exporting data.

    Common I/O for System Disk

    Security Group

    Controls ECS access within or between security groups by defining access rules. ECSs added to a security group are protected by the access rules you define.

    N/A

    EIP

    An EIP is a static public IP address bound to an ECS in a VPC. Using the EIP, the ECS provides services externally.

    The following options are provided:

    • Do not use: An ECS without an EIP cannot access the Internet. However, it can still be used as a service ECS or deployed in a cluster on a private network.
    • Automatically assign: An EIP with a dedicated bandwidth is automatically assigned to each ECS. You can set the bandwidth size. If you select Automatically assign, you need to specify EIP Type, Billed By, and Bandwidth.

    Automatically assign

    Key Pair

    A key pair is used for ECS login authentication. If you select this mode, create or import a key pair on the Key Pair page.

    NOTE:

    If you use an existing key, make sure that you have saved the key file locally. Without the key, you will not be able to log in to your instance.

    N/A

    Advanced Settings

    You can select Do not configure or Configure now.

    N/A

    User Data

    Enables an ECS to automatically inject user data when the ECS starts for the first time. This configuration is optional. After this function is enabled, the ECS automatically injects user data during its first startup.

    The following methods are available:

    • As text: allows you to enter the user data in the text box below.
    • As file: allows you to inject script files or other files when you create an ECS.
      NOTE:
      • For Linux, if you use password authentication, this function is not supported.
      • If the selected image does not support user data injection, this function is not supported.

    N/A
  5. Click Create Now.
  6. Check the AS configuration and click Submit.

    The system displays a message indicating that the AS configuration has been created and switches to the AS Configurations page. You can view the newly created AS configuration on the AS Configurations page.

  7. If you want to use the newly created AS configuration, add it to the AS group. For details, see Creating an AS Group or Changing the AS Configuration for an AS Group.
  8. (Optional) Enable the AS group.

    If the AS group is in Disabled state, enable it. For details, see Enabling an AS Group.

Parent topic: AS Configuration