Auto Scaling:ModifyScalingConfiguration

The ID of the scaling configuration that you want to modify.

Specifies whether to create an I/O optimized instance. Valid values:

• none: does not create an I/O optimized instance.
• optimized: creates an I/O optimized instance.

The preemption policy that you want to apply to pay-as-you-go instances and preemptible instances. Valid values:

• NoSpot: The instance is created as a pay-as-you-go instance.
• SpotWithPriceLimit: The instance is a preemptible instance that has a user-defined maximum hourly price.
• SpotAsPriceGo: The instance is created as a preemptible instance for which the market price at the time of purchase is automatically used as the bidding price.

The name of the scaling configuration. The name must be 2 to 64 characters in length, and can contain letters, digits, underscores (_), hyphens (-), and periods (.). The name must start with a letter or a digit.

The name of the scaling configuration must be unique in a region. If you do not specify this parameter, the scaling configuration ID is used.

The name of the Elastic Compute Service (ECS) instance that is automatically created by using the scaling configuration.

The hostname of the ECS instance. The hostname cannot start or end with a period (.) or a hyphen (-). The hostname cannot contain consecutive periods (.) or hyphens (-). Naming conventions for different types of instances:

• Windows instances: The hostname must be 2 to 15 characters in length, and can contain letters, digits, and hyphens (-). The hostname cannot contain periods (.) or contain only digits.
• Other instances, such as Linux instances: The hostname must be 2 to 64 characters in length. Separate a hostname into multiple segments with periods (.). Each segment can contain letters, digits, and hyphens (-).

The ID of the image that is used by Auto Scaling to automatically create ECS instances.

The name of the image. Each image name must be unique in a region. If you specify ImageId, ImageName is ignored.

You cannot use ImageName to specify images from Alibaba Cloud Marketplace.

The number of vCPUs.

You can specify the number of vCPUs and the memory size to determine the range of instance types. For example, you can set Cpu to 2 and Memory to 16 to specify instance types that have 2 vCPUs and 16 GiB of memory. If you specify Cpu and Memory, Auto Scaling determines the available instance types based on factors such as I/O optimization requirements and zones. Then, Auto Scaling preferentially creates instances by using the lowest-priced instance type.

The memory size. Unit: GiB.

You can specify the number of vCPUs and the memory size to determine the range of instance types. For example, you can set Cpu to 2 and Memory to 16 to specify instance types that have 2 vCPUs and 16 GiB of memory. If you specify Cpu and Memory, Auto Scaling determines the available instance types based on factors such as I/O optimization requirements and zones. Then, Auto Scaling preferentially creates instances by using the lowest-priced instance type.

The metering method for network usage. Valid values:

• PayByBandwidth: You are charged for the maximum available bandwidth that is specified by InternetMaxBandwidthOut.
• PayByTraffic: You are charged for the actual data transfer. InternetMaxBandwidthOut specifies only the maximum available bandwidth.

The maximum outbound public bandwidth. Unit: Mbit/s. Valid values:

• If you set InternetChargeType to PayByBandwidth: 0 to 100. If you leave this parameter empty, this parameter is automatically set to 0.
• If you set InternetChargeType to PayByTraffic: 0 to 100. If you leave this parameter empty, an error is returned.

The category of the system disk. Valid values:

• cloud: basic disk
• cloud_efficiency: ultra disk
• cloud_ssd: standard SSD
• cloud_essd: enhanced SSD (ESSD)
• ephemeral_ssd: local SSD

If you specify SystemDisk.Category, you cannot specify SystemDiskCategories. If you do not specify SystemDisk.Category or SystemDiskCategories, the default value of SystemDisk.Category is used. For non-I/O optimized instances of Generation I instance types, the default value is cloud. For instances of other instance types, the default value is cloud_efficiency.

The size of the system disk. Unit: GiB. Valid values:

• If you set SystemDisk.Category to cloud: 20 to 500.
• If you set SystemDisk.Category to cloud_efficiency: 20 to 500.
• If you set SystemDisk.Category to cloud_ssd: 20 to 500.
• If you set SystemDisk.Category to cloud_essd: 20 to 500.
• If you set SystemDisk.Category to ephemeral_ssd: 20 to 500.

The value of SystemDisk.Size must be greater than or equal to max{20, ImageSize}.

The name of the system disk. The name must be 2 to 128 characters in length, and can contain letters, digits, colons (:), underscores (_), and hyphens (-). The name must start with a letter but cannot start with http:// or https://.

Default value: null.

The description of the system disk. The description must be 2 to 256 characters in length. The description can contain letters but cannot start with http:// or https://.

The ID of the automatic snapshot policy that you want to apply to the system disk.

The performance level (PL) of the system disk that is an ESSD. Valid values:

• PL0: An ESSD can provide up to 10,000 random read/write IOPS.
• PL1: An ESSD can provide up to 50,000 random read/write IOPS.
• PL2: An ESSD can provide up to 100,000 random read/write IOPS.
• PL3: An ESSD can provide up to 1,000,000 random read/write IOPS.

The weight of an ECS instance as a backend server. Valid values: 1 to 100.

The user data of the ECS instance. The data must be encoded in Base64. The maximum size of the data before encoding is 16 KB.

The name of the key pair that you can use to log on to an ECS instance.

• Windows instances do not support this parameter.
• By default, the username and password authentication method is disabled for Linux instances.

The name of the RAM role that you want to attach to the ECS instance. The name is provided and maintained by Resource Access Management (RAM). You can call the ListRoles operation to query the available RAM roles. You can call the CreateRole operation to create RAM roles.

Specifies whether to use the password that is preconfigured in the image. Before you use this parameter, make sure that a password is configured in the image.

The tags of the ECS instance. Specify the tags as key-value pairs. You can specify up to 20 tags. When you specify tag keys and tag values, take note of the following items:

• A tag key can be up to 64 characters in length. The key cannot start with acs: or aliyun, and cannot contain http:// or https://. The tag key cannot be an empty string.
• A tag value can be up to 128 characters in length. The value cannot start with acs: or aliyun, and cannot contain http:// or https://. The tag value can be an empty string.

The ID of the deployment set of the ECS instances that are created by using the scaling configuration.

The ID of the security group with which ECS instances are associated. The ECS instances that are associated with the same security group can access each other.

Specifies whether to overwrite existing data. Valid values:

• true
• false

The ID of the resource group to which the ECS instances belong.

The ID of the Elastic High Performance Computing (E-HPC) cluster to which the ECS instances belong.

The description of the ECS instance. The description must be 2 to 256 characters in length. The description can contain letters but cannot start with http:// or https://.

The number of randomly generated IPv6 addresses that you want to allocate to the elastic network interface (ENI).

The performance mode of the burstable instance. Valid values:

• Standard: standard mode. For more information, see the "Standard mode" section in the Burstable instances topic.
• Unlimited: unlimited mode. For more information, see the "Unlimited mode" section in the Burstable instances topic.

The name of the image family. If you specify this parameter, the latest custom images that are available in the specified image family are returned. Then, you can use the images to create instances. If you specify ImageId, you cannot specify ImageFamily.

The zone ID of the ECS instances that are created by using the scaling configuration.

The ID of the dedicated host on which you want to create ECS instances. You cannot create preemptible instances on dedicated hosts. If you specify DedicatedHostId, SpotStrategy and SpotPriceLimit are ignored.

You can call the DescribeDedicatedHosts operation to query the most recent list of dedicated host IDs.

Specifies whether to associate an ECS instance on a dedicated host with the dedicated host. Valid values:

• default: does not associate the ECS instance with the dedicated host. If you start an instance that is stopped in economical mode and the original dedicated host has insufficient resources, the instance is automatically deployed to another dedicated host in the automatic deployment resource pool.
• host: associates the ECS instance with the dedicated host. If you start an ECS instance that is stopped in economical mode, the ECS instance remains on the original dedicated host. If the original dedicated host has insufficient resources, the ECS instance fails to start.

Specifies whether to create an ECS instance on a dedicated host. Valid values:

• default: does not create the ECS instance on a dedicated host.
• host: creates the ECS instance on a dedicated host. If you do not specify DedicatedHostId, Alibaba Cloud selects a dedicated host for the ECS instance.

The scheduler options.

The type of the private pool that you want to use to start instances. A private pool is generated when an elasticity assurance or a capacity reservation takes effect. You can select a private pool for Auto Scaling to start instances. Valid values:

• Open: open private pool. Auto Scaling selects a matching open private pool to start instances. If no matching open private pools exist, Auto Scaling uses the resources in the public pool to start instances. In this case, you do not need to specify PrivatePoolOptions.Id.
• Target: specified private pool. Auto Scaling uses the resources in the specified private pool to start instances. If the private pool is unavailable, Auto Scaling cannot start the instances. If you set this parameter to Target, you must specify PrivatePoolOptions.Id.
• None: no private pool: Auto Scaling does not use the resources in private pools to start instances.

The ID of the private pool. The ID of a private pool is the same as the ID of the elasticity assurance or capacity reservation for which the private pool is generated.

The retention period of the preemptible instance. Unit: hours. Valid values: 0, 1, 2, 3, 4, 5, and 6.

• The following retention periods are available in invitational preview: 2, 3, 4, 5, and 6 hours. If you want to set this parameter to one of these values, submit a ticket.
• If you set this parameter to 0, no retention period is specified for the preemptible instance.

The interruption mode of the preemptible instance. Default value: Terminate. Set the value to Terminate. This value specifies that the preemptible instance is to be released.

The data disks.

The preemptible instance types.

The instance type. If you specify InstanceTypes, InstanceType is ignored.

Auto Scaling creates instances based on the priorities of instance types. If Auto Scaling cannot create instances by using the instance type that has the highest priority, Auto Scaling creates instances by using the instance type that has the next highest priority.

The instance types.

The IDs of the security groups.

The intelligent configuration settings, which determines the range of instance types that meet the specified criteria.

The categories of the system disks. If Auto Scaling cannot create instances by using the disk category that has the highest priority, Auto Scaling creates instances by using the disk category that has the next highest priority. Valid values:

• cloud: basic disk
• cloud_efficiency: ultra disk
• cloud_ssd: standard SSD
• cloud_essd: ESSD

Specifies whether to encrypt the system disk. Valid values:

• true
• false

Default value: false

The ID of the KMS key that you want to use to encrypt the system disk.

The algorithm that you want to use to encrypt the system disk. Valid values:

• AES-256
• SM4-128

Default value: AES-256

The IOPS metric that is preconfigured for the system disk.

Specifies whether to enable the burst feature for the system disk. Valid values:

• true
• false