Using a New Specifications Template to Create an AS Configuration

Scenarios

If you have special requirements on the ECSs for resource expansion, use a new specifications template to create the AS configuration. In such a case, ECSs meeting specifications of 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. In the navigation pane on the left, choose Instance 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
   CPU Architecture	The following two types of CPU architectures are available: x86: The x86-based CPU architecture uses Complex Instruction Set Computing (CISC). Kunpeng: The Kunpeng-based CPU architecture uses Reduced Instruction Set Computing (RISC).	x86
   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 removes the need to configure multiple ECSs repeatedly. Shared image A shared image is a private image shared by another public cloud user.	Public image
   Disk	Includes system disks 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. If a full-ECS image is used, the system disk is restored using the disk backup. On the console, you can only change the volume type and size. In addition, the volume cannot be smaller than the disk backup. Data Disk You can create multiple data disks for an ECS. In addition, you can specify a data disk image for exporting data. If the image you selected is of the full-ECS image type, you can change the volume type and size and encryption attributes of the data disk restored using the disk backup. Ensure that the volume size is greater than or equal to the disk backup size, and the encryption attributes can be modified only if the disk backup of the full-ECS image locates in the target region.	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. NOTE: If you select Automatically assign, you need to specify Type, Billed By, and Bandwidth.	Automatically assign
   Bandwidth	You can select Dedicated or Shared. Dedicated: The bandwidth can be used by only one EIP. Shared: The bandwidth can be used by multiple EIPs. NOTE: This parameter is available only when EIP is set to Automatically assign. If you select Dedicated, you can select Bandwidth or Traffic for Billed By. The shared bandwidth can be billed only by bandwidth. You can select a shared bandwidth to which the EIP is to be added.	Shared
   Login Mode	An ECS can be authorized using a key pair or a password. Key pair In this mode, keys are used for authenticating the users who attempt to log in to target ECSs. 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. Otherwise, logging in to the ECS will fail. Password In this mode, the initial password of user root (for Linux) or user Administrator (for Windows) is used for authentication. You can log in to an ECS using the username and its initial password.	Admin@123
   Advanced Settings	This parameter allows you to configure ECS Group and User Data Injection. You can select Do not configure or Configure now.	N/A
   User Data Injection	Enables the 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 upon its first startup. For details, see Elastic Cloud Server User Guide. 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. If you select As file, the system automatically injects the files into a specified directory when creating an ECS. For Linux, specify the path for storing the injected file, for example /etc/foo.txt. For Windows, the injected file is automatically stored in the root directory of disk C. You only need to specify the file name, such as foo. The file name can contain only letters and digits. NOTE: For Linux, if you use the password authentication mode, the user data injection function is unavailable. If the selected image does not support user data injection, the user data injection function is unavailable.	-

5. Click Create Now.
6. If you want to use the newly created AS configuration, add it to the AS group. For details, see Replacing AS Configuration in an AS Group.