Help Center> Auto Scaling> User Guide (Ankara Region)> AS Management> AS Configuration> Creating an AS Configuration from a New Specifications Template
Updated on 2024-04-25 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

    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

    I/O Optimization

    Enabling I/O optimization improves network performance between different ECSs and between ECSs and EVS disks attached to the ECSs, which improves the storage performance of the EVS disks. This configuration is optional.

    NOTE:

    I/O optimization is provided only in certain AZs. Therefore, the system allocates the ECSs in an AS group where this parameter is selected for the AS configuration only to the AZs supporting I/O optimization.

    N/A

    Specifications

    The 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 cloud user.

    Public image

    License Type

    Specifies a license type for using an OS or software on the cloud. If the image you selected is free of charge, this parameter is unavailable. If the image you selected is billed, such as an Ubuntu, SUSE, Oracle Linux, or Windows Server Edition image, this parameter is available.

    • Use license from the system

      Allows you to use the license provided by the cloud. Obtaining the authorization of such a license is billed.

    • Bring your own license (BYOL)

      Allows you to use your existing OS license. In such a case, you do not need to apply for a license again.

    For more information about the license type, see Elastic Cloud Server User Guide.

    Bring your own license (BYOL)

    Disk
    Includes system and data disks.
    • System Disk

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

      High I/O: uses serial attached SCSI (SAS) 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

    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

    Login Mode
    An ECS can be authorized using a key pair or a password.
    • Key pair

      Keys are used for authenticating the users who attempt to log in to ECS instances. 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.

    • Password

      The initial password of user root (for Linux) or user Administrator (for Windows) is used for authentication. You can log in to an ECS instance using a username and password combination.

    Admin@123

    User Data

    Enables the ECS to automatically inject user data when the ECS starts for the first time. This configuration is optional.

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

    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