Auto Scaling：ModifyScalingConfiguration

Action

String

Yes

ModifyScalingConfiguration

The operation that you want to perform. Set the value to ModifyScalingConfiguration.

ScalingConfigurationId

String

Yes

asc-bp16har3jpj6fjbx****

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

IoOptimized

String

No

none

Specifies whether to create I/O optimized ECS instances. Valid values:

• none: does not create I/O optimized ECS instances.

• optimized: creates I/O optimized ECS instances.

SpotStrategy

String

No

NoSpot

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

• NoSpot: The ECS instances are created as regular pay-as-you-go instances.

• SpotWithPriceLimit: The ECS instances are preemptible instances that have a user-defined maximum hourly price.

• SpotAsPriceGo: The ECS instances are created as preemptible instances for which the market price at the time of purchase is automatically used as the bidding price.

ScalingConfigurationName

String

No

test-modify

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 (.). It must start with a letter or a digit.

The name of the scaling configuration must be unique within the scaling group in a region. If you leave this parameter empty, the value of ScalingConfigurationId is used.

InstanceName

String

No

inst****

The name series of the ECS instances that Auto Scaling creates based on the scaling configuration.

HostName

String

No

hos****

The hostname series of the ECS instances that Auto Scaling creates based on the scaling configuration. A hostname cannot start or end with a period (.) or a hyphen (-). It cannot contain consecutive periods (.) or hyphens (-).

Naming conventions:

• Windows instances: A hostname must be 2 to 15 characters in length, and can contain letters, digits, and hyphens (-). A hostname cannot contain periods (.). It cannot contain only digits.

• Other instances, such as Linux instances: A 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 (-).

ImageId

String

No

centos6u5_64_20G_aliaegis_2014****.vhd

The ID of the image that Auto Scaling uses to automatically create ECS instances.

ImageName

String

No

suse11sp3_64_20G_aliaegis_2015****.vhd

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

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

Cpu

Integer

No

2

The number of vCPUs.

You can specify the number of vCPUs and the memory size to define 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 instance type that has the lowest price.

Memory

Integer

No

16

The memory size.

You can specify the number of vCPUs and the memory size to define 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 instance type that has the lowest price.

InternetChargeType

String

No

PayByBandwidth

The billing method for network usage. Valid values:

• PayByBandwidth: pay-by-bandwidth. You are charged for the maximum available bandwidth that is specified by InternetMaxBandwidthOut.

• PayByTraffic: pay-by-traffic. You are charged for the actual amount of transferred data. InternetMaxBandwidthOut specifies only the maximum available bandwidth.

InternetMaxBandwidthOut

Integer

No

10

The maximum outbound public bandwidth. Unit: Mbit/s. Valid values: 0 to 100.

Default value: 0.

SystemDisk.Category

String

No

cloud_efficiency

The category of the system disk. Valid values:

• cloud: basic disk.

• cloud_efficiency: ultra disk.

• cloud_ssd: standard SSD.

• cloud_essd: Enterprise SSD (ESSD).

• ephemeral_ssd: local SSD.

• cloud_auto: ESSD AutoPL disk.

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

SystemDisk.Size

Integer

No

50

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 the value of max{20, ImageSize}.

SystemDisk.DiskName

String

No

cloud_ssdSystem

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 (-). It must start with a letter but cannot start with http:// or https://.

SystemDisk.Description

String

No

Test system disk.

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

SystemDisk.AutoSnapshotPolicyId

String

No

sp-bp12m37ccmxvbmi5****

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

SystemDisk.PerformanceLevel

String

No

PL0

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.

LoadBalancerWeight

Integer

No

50

The load balancing weight of each ECS instance. Valid values: 1 to 100.

UserData

String

No

ZWNobyBoZWxsbyBlY3Mh

The user data of ECS instances. You must encode the user data in Base64. The raw data before Base64 encoding cannot exceed 32 KB in size.

KeyPairName

String

No

KeyPair_Name

The name of the key pair that you want to use to log on to ECS instances.

• Windows instances do not support this parameter.

• By default, the username and password authentication method is disabled for Linux instances.

RamRoleName

String

No

RamRoleTest

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

PasswordInherit

Boolean

No

false

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.

Tags

String

No

{"key1":"value1","key2":"value2", ... "key5":"value5"}

The tags of ECS instances. Specify the tags in the key-value pair format. You can specify up to 20 tags for each ECS instance. 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. It cannot start with acs: or aliyun, and cannot contain http:// or https://. You cannot specify an empty string as a tag key.

• A tag value can be up to 128 characters in length. It cannot start with acs: or aliyun, and cannot contain http:// or https://. You can specify an empty string as a tag value.

DeploymentSetId

String

No

ds-bp13v7bjnj9gis****

The ID of the deployment set to which ECS instances belong.

SecurityGroupId

String

No

sg-F876F****

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

Override

Boolean

No

true

Specifies whether to overwrite existing data. Valid values:

• true

• false

ResourceGroupId

String

No

abcd1234abcd****

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

HpcClusterId

String

No

hpc-clusterid

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

InstanceDescription

String

No

Test instance.

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

Ipv6AddressCount

Integer

No

1

The number of randomly generated IPv6 addresses that you want to allocate to the ENI.

CreditSpecification

String

No

Standard

The performance mode of burstable instances. Valid values:

• Standard: the standard mode. For more information, see the "Standard mode" section in the Overview topic of burstable instances.

• Unlimited: the unlimited mode. For more information, see the "Unlimited mode" section in Overview topic of burstable instances.

ImageFamily

String

No

hangzhou-daily-update

The name of the image family. You can specify the ImageFamily request parameter to obtain the most recent available images in the current image family for instance creation. If you specify ImageId, you cannot specify ImageFamily.

ZoneId

String

No

cn-hangzhou-g

The zone ID of ECS instances.

DedicatedHostId

String

No

dh-bp67acfmxazb4p****

The ID of the dedicated host on which you can 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 dedicated host ID list.

Affinity

String

No

default

Specifies whether to associate the 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 restart an instance 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 restart an instance in Economical Mode, the instance remains on the original dedicated host. If the original dedicated host has insufficient resources, the restart operation fails.

Tenancy

String

No

default

Specifies whether to create ECS instances on dedicated hosts. Valid values:

• default: creates ECS instances on non-dedicated hosts.

• host: creates ECS instances on dedicated hosts. If you do not specify DedicatedHostId, Alibaba Cloud randomly selects dedicated hosts for ECS instances.

SchedulerOptions

Map

No

["testManagedPrivateSpaceId****"]

The scheduling options.

PrivatePoolOptions.MatchCriteria

String

No

Open

The type of private pool that you want to use to start ECS 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 ECS instances. Valid values:

• Open: open private pool. Auto Scaling selects a matching open private pool to start ECS instances. If no matching open private pools exist, Auto Scaling uses the resources in the public pool to start ECS instances. If you set this parameter to Open, you do not need to specify PrivatePoolOptions.Id.

• Target: the specified private pool. Auto Scaling uses the resources in the specified private pool to start ECS instances. If the specified private pool does not exist, the ECS instances fail to start. 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 ECS instances.

PrivatePoolOptions.Id

String

No

eap-bp67acfmxazb4****

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.

SpotDuration

Integer

No

1

The protection period of preemptible instances. Unit: hours. Valid values:

• 1: After a preemptible instance is created, Alibaba Cloud ensures that the instance is not automatically released within 1 hour. After the protection period ends, Alibaba Cloud compares the bidding price with the market price and checks the resource inventory to determine whether to release the instance.

• 0: After a preemptible instance is created, Alibaba Cloud does not ensure that the instance is not automatically released within 1 hour. Alibaba Cloud compares the bidding price with the market price and checks the resource inventory to determine whether to release the instance.

Default value: 1.

SpotInterruptionBehavior

String

No

Terminate

The interruption mode of preemptible instances. Set the value to Terminate, which specifies that preemptible instances are directly released by Auto Scaling.

DataDisk.N.PerformanceLevel

String

No

PL1

The PL of data disk N that is an ESSD. If you set DataDisk.N.Category to cloud_essd, the value of N in this parameter must be the same as the value of N in DataDisk.N.Category. 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.

DataDisk.N.AutoSnapshotPolicyId

String

No

sp-bp19nq9enxqkomib****

The ID of the automatic snapshot policy that you want to apply to data disk N. Valid values of N: 1 to 16.

DataDisk.N.Encrypted

String

No

false

Specifies whether to encrypt data disk N. Valid values of N: 1 to 16. Valid values:

• true

• false

DataDisk.N.Description

String

No

Test data disk.

The description of data disk N. Valid values of N: 1 to 16. The description must be 2 to 256 characters in length and cannot start with http:// or https://.

DataDisk.N.SnapshotId

String

No

s-snapshot****

The ID of the snapshot that you want to use to create data disk N. Valid values of N: 1 to 16. If you specify this parameter, DataDisk.N.Size is ignored. The size of the data disk is the same as the size of the specified snapshot.

If you specify a snapshot that is created on or before July 15, 2013, the operation fails and the InvalidSnapshot.TooOld error is returned.

DataDisk.N.Categories.N

String

No

cloud

Category N of data disk N. The first N in DataDisk.N.Categories.N represents the serial number of the data disk. Valid values of the first N: 1 to 16. The second N in DataDisk.N.Categories.N represents the serial number of the data disk category. Valid values of the second N: 1 to 4. A smaller value of N specifies a higher priority. If Auto Scaling cannot create disks by using the disk category that has the highest priority, disks are created by using the disk category that has the next highest priority. Valid values:

• cloud: basic disk. The DeleteWithInstance attribute of a basic disk that is created together with an ECS instance is set to true.

• cloud_efficiency: ultra disk.

• cloud_ssd: standard SSD.

• cloud_essd: ESSD.

DataDisk.N.Size

Integer

No

100

The size of data disk N. Unit: GiB. Valid values of N: 1 to 16. Valid values:

• If you set DataDisk.N.Category to cloud: 5 to 2000.

• If you set DataDisk.N.Category to cloud_efficiency: 20 to 32768.

• If you set DataDisk.N.Category to cloud_essd: 20 to 32768.

• If you set DataDisk.N.Category to ephemeral_ssd: 5 to 800.

The size of the data disk must be greater than or equal to the size of the snapshot that is specified by SnapshotId.

DataDisk.N.Device

String

No

/dev/xvdb

The mount target of data disk N. Valid values of N: 1 to 16. If you leave this parameter empty, the system automatically assigns a mount target when Auto Scaling creates ECS instances. The name of the mount target ranges from /dev/xvdb to /dev/xvdz.

DataDisk.N.DiskName

String

No

cloud_ssdData

The name of data disk N. Valid values of N: 1 to 16. The name must be 2 to 128 characters in length, and can contain letters, digits, colons (:), underscores (_), and hyphens (-). It must start with a letter but cannot start with http:// or https://.

DataDisk.N.Category

String

No

cloud_ssd

The category of data disk N. Valid values of N: 1 to 16. Valid values:

• cloud: basic disk. The DeleteWithInstance attribute of a basic disk that is created together with an ECS instance is set to true.

• cloud_efficiency: ultra disk.

• cloud_ssd: standard SSD.

• cloud_essd: ESSD.

• ephemeral_ssd: local SSD.

• cloud_auto: ESSD AutoPL disk.

If you specify DataDisk.N.Category, you cannot specify DataDisk.N.Categories.N. If you do not specify DataDisk.N.Category or DataDisk.N.Categories.N, the default value of DataDisk.N.Category is used.

• For I/O optimized ECS instances, the default value of this parameter is cloud_efficiency.

• For non-I/O optimized ECS instances, the default value of this parameter is cloud.

DataDisk.N.DeleteWithInstance

Boolean

No

true

Specifies whether to release data disk N when the ECS instance to which data disk N is attached is released. Valid values of N: 1 to 16. Valid values:

• true

• false

Only independent disks whose DataDisk.N.Category is set to cloud, cloud_efficiency, cloud_ssd, or cloud_essd support this parameter. If you specify this parameter for disks of other categories, an error is reported.

DataDisk.N.KMSKeyId

String

No

0e478b7a-4262-4802-b8cb-00d3fb40****

The ID of the Key Management Service (KMS) key that you want to use to encrypt data disk N. Valid values of N: 1 to 16.

DataDisk.N.ProvisionedIops

Long

No

100

The provisioned IOPS of data disk N.

DataDisk.N.BurstingEnabled

Boolean

No

false

Specifies whether to enable the Burst feature for data disk N. Valid values:

• true

• false

  Note

  This parameter is available only if you set DataDisk.Category to cloud_auto.

SpotPriceLimit.N.PriceLimit

Float

No

0.125

The price limit of preemptible instance N. Valid values of N: 1 to 10. This parameter takes effect only if you set SpotStrategy to SpotWithPriceLimit.

SpotPriceLimit.N.InstanceType

String

No

ecs.g6.large

The instance type of preemptible instance N. Valid values of N: 1 to 10. This parameter takes effect only if you set SpotStrategy to SpotWithPriceLimit.

InstanceTypes.N

String

No

ecs.g6.large

Instance type N. If you specify this parameter, InstanceType is ignored. Valid values of N: 1 to 10.

The first instance type that is specified by InstanceTypes.N has the highest priority. The priority decreases based on the specified order of instance types. 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, instances are created by using the instance type that has the next highest priority.

InstanceTypeOverride.N.InstanceType

String

No

ecs.c5.xlarge

If you want to specify the weight of instance type N in the scaling configuration, specify InstanceTypeOverride.N.InstanceType and InstanceTypeOverride.N.WeightedCapacity.

This parameter specifies instance type N. You can use InstanceTypeOverride.N.InstanceType to specify multiple instance types and use InstanceTypeOverride.N.WeightedCapacity to specify the weights of the instance types. Valid values of N: 1 to 10.

For information about the valid values of InstanceType in InstanceTypeOverride.N.InstanceType, see Overview of instance families.

InstanceTypeOverride.N.WeightedCapacity

Integer

No

4

If you want to specify the weight of instance type N in the scaling configuration, specify InstanceTypeOverride.N.WeightedCapacity after you specify InstanceTypeOverride.N.InstanceType. The value of N in the two parameters must be the same.

This parameter specifies the weight of instance type N. The weight specifies the capacity of an instance of instance type N in the scaling group. A higher weight specifies that a smaller number of instances of instance type N are required to achieve the expected capacity.

Performance metrics, such as the number of vCPUs and the memory size of each instance type, may vary. You can specify different weights for different instance types based on your business requirements.

Sample capacity configurations:

• Current capacity: 0.

• Expected capacity: 6.

• Capacity of ecs.c5.xlarge: 4.

To achieve the expected capacity, Auto Scaling must scale out two ecs.c5.xlarge instances.

Valid values of WeightedCapacity in InstanceTypeOverride.N.WeightedCapacity: 1 to 500.

SecurityGroupIds.N

String

No

sg-bp18kz60mefs****

The ID of the security group.

InstancePatternInfo.N.Cores

Integer

No

2

The number of vCPUs that you want to allocate to instance type N in intelligent configuration mode. You can specify this parameter to obtain the instance types that meet the specified criteria. For more information, see Overview of instance families. Valid values of N: 1 to 10.

When you specify this parameter, take note of the following items:

• Only scaling groups that reside in virtual private clouds (VPCs) support InstancePatternInfo.N.

• If you specify InstancePatternInfo.N, you must specify InstancePatternInfo.N.Cores and InstancePatternInfo.N.Memory.

• If you specify an instance type by using InstanceType or InstanceTypes.N, Auto Scaling preferentially uses the instance type that is specified by InstanceType or InstanceTypes.N during scale-out events. If the specified instance type has insufficient inventory, Auto Scaling uses the instance type that has the lowest price specified by InstancePatternInfo.N during scale-out events.

InstancePatternInfo.N.InstanceFamilyLevel

String

No

EnterpriseLevel

The level of instance type N in intelligent configuration mode. You can specify this parameter to obtain the instance types that meet the specified criteria. Valid values:

• EntryLevel: entry-level (shared instance types). Instance types of this level are the most cost-effective but may not ensure consistent computing performance. Instance types of this level are suitable for business scenarios in which the CPU utilization is low. For more information, see Shared instance families.

• EnterpriseLevel: enterprise-level. Instance types of this level provide stable performance and dedicated resources and are suitable for business scenarios that require high stability. For more information, see Overview of instance families.

• CreditEntryLevel: credit entry-level (burstable instance types). CPU credits are used to ensure computing performance. Instance types of this level are suitable for scenarios in which the CPU utilization is low but may fluctuate in specific cases. For more information, see Overview of burstable instances.

Valid values of N: 1 to 10.

InstancePatternInfo.N.MaxPrice

Float

No

2

The maximum price per hour of pay-as-you-go instance N or preemptible instance N in intelligent configuration mode. You can specify this parameter to obtain the instance types that meet the specified criteria. Valid values of N: 1 to 10.

InstancePatternInfo.N.Memory

Float

No

4

The memory size of instance type N in intelligent configuration mode. Unit: GiB. You can specify this parameter to obtain the instance types that meet the specified criteria. For more information, see Overview of instance families. Valid values of N: 1 to 10.

InstancePatternInfo.N.Architecture.N

String

No

X86

The architecture type of instance type N. Valid values:

• X86: x86.

• Heterogeneous: heterogeneous computing, such as GPU-accelerated or FPGA-accelerated.

• BareMetal: ECS Bare Metal Instance.

• Arm: Arm.

By default, all values are selected.

InstancePatternInfo.N.BurstablePerformance

String

No

Include

Specifies whether to include burstable instance types. Valid values:

• Exclude: excludes burstable instance types.

• Include: includes burstable instance types.

• Required: includes only burstable instance types.

Default value: Include.

InstancePatternInfo.N.ExcludedInstanceType.N

String

No

ecs.n1.small/ecs.n1.*/*7*

The instance type that you want to exclude. You can use an asterisk (*) as a wildcard character to exclude an instance type or an instance family. Examples:

• ecs.c6.large: excludes the ecs.c6.large instance type.

• ecs.c6.*: excludes the c6 instance family.

InstancePatternInfo.N.InstanceTypeFamilies.N

String

No

["ecs.g6", "ecs.c6", … "ecs.r6"]

The instance family N. Valid values of N: 1 to 10.

InstancePatternInfo.N.MinimumCpuCoreCount

Integer

No

2

The minimum number of vCPUs per instance type.

InstancePatternInfo.N.MaximumCpuCoreCount

Integer

No

4

The maximum number of vCPUs per instance type.

InstancePatternInfo.N.GpuSpecs.N

String

No

["NVIDIA V100"]

The GPU model.

InstancePatternInfo.N.InstanceCategories.N

String

No

Compute-optimized with GPU

Category N of the instance type.

• General-purpose: general-purpose instance type.

• Compute-optimized: compute-optimized instance type.

• Memory-optimized: memory-optimized instance type.

• Big data: big data instance type.

• Local SSDs: instance type that uses local SSDs.

• High Clock Speed: instance type that has a high clock speed.

• Enhanced: enhanced instance type.

• Shared: shared instance type.

• Compute-optimized with GPU: GPU-accelerated compute-optimized instance type.

• Visual Compute-optimized: visual compute-optimized instance type.

• Heterogeneous Service: heterogeneous service instance type.

• Compute-optimized with FPGA: FPGA-accelerated compute-optimized instance type.

• Compute-optimized with NPU: NPU-accelerated compute-optimized instance type.

• ECS Bare Metal: ECS Bare Metal Instance type.

• High Performance Compute: HPC-optimized instance type.

InstancePatternInfo.N.CpuArchitectures.N

String

No

["X86", "ARM"]

CPU architecture N of the instance type. Valid values:

• x86

• Arm

InstancePatternInfo.N.PhysicalProcessorModels.N

String

No

"PhysicalProcessorModels": [ "[\"Intel Xeon(Ice Lake) Platinum 8369B\", \"Intel Xeon(Skylake) Platinum 8163\", … \"Intel Xeon(Cascade Lake) Platinum 8269CY\"]" ],

The processor model N of the instance type. Valid values of N: 1 to 10.

InstancePatternInfo.N.MinimumEniQuantity

Integer

No

2

The minimum number of ENIs per instance.

InstancePatternInfo.N.MinimumEniPrivateIpAddressQuantity

Integer

No

2

The minimum number of IPv4 addresses per ENI.

InstancePatternInfo.N.MinimumEniIpv6AddressQuantity

Integer

No

1

The minimum number of IPv6 addresses per ENI.

InstancePatternInfo.N.MinimumInitialCredit

Integer

No

12

The minimum initial vCPU credits of each t5 or t6 burstable instance.

InstancePatternInfo.N.MinimumBaselineCredit

Integer

No

12

The minimum baseline vCPU computing performance (overall baseline performance of all vCPUs) of each t5 or t6 burstable instance.

InstancePatternInfo.N.MinimumMemorySize

Float

No

4

The minimum memory size per instance. Unit: GiB.

InstancePatternInfo.N.MaximumMemorySize

Float

No

4

The maximum memory size per instance. Unit: GiB.

InstancePatternInfo.N.MinimumGpuAmount

Integer

No

2

The minimum number of GPUs per instance. The value must be a positive integer.

InstancePatternInfo.N.MaximumGpuAmount

Integer

No

2

The maximum number of GPUs per instance. The value must be a positive integer.

SystemDiskCategories.N

String

No

cloud

The category N of the system disk. Valid values of N: 1 to 4. A smaller value of N specifies a higher priority. If Auto Scaling cannot create disks by using the disk category that has the highest priority, disks are created 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.

Password

String

No

123abc****

The password series of ECS instances. A password must be 8 to 30 characters in length and must contain at least three of the following character types: uppercase letters, lowercase letters, digits, and any of the following special characters:

()~!@#$%^&*-_+=\|{}[]:;'<>,.?/ For Windows instances, passwords cannot start with a forward slash (/). If you specify Password, we recommend that you use HTTPS to send requests to ensure password security.

SystemDisk.Encrypted

Boolean

No

false

Specifies whether to encrypt the system disk. Valid values:

• true

• false

Default value: false.

SystemDisk.KMSKeyId

String

No

0e478b7a-4262-4802-b8cb-00d3fb40****

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

SystemDisk.EncryptAlgorithm

String

No

AES-256

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

• AES-256

• SM4-128

Default value: AES-256.

SystemDisk.ProvisionedIops

Long

No

100

The provisioned IOPS of the system disk.

SystemDisk.BurstingEnabled

Boolean

No

false

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

• true

• false

  Note

  This parameter is available only if you set SystemDisk.Category to cloud_auto.

ImageOptions.LoginAsNonRoot

Boolean

No

false

Specifies whether to use ecs-user to log on to ECS instances. For more information, see Manage the logon username of an instance. Valid values:

• true

• false

DeletionProtection

Boolean

No

false

Specifies whether to enable the Release Protection feature for ECS instances. Only pay-as-you-go instances support this parameter. You can use this parameter to specify whether an ECS instance can be directly released in the ECS console or by calling the DeleteInstance operation. Valid values:

• true: enables the Release Protection feature. In this case, you cannot release ECS instances in the ECS console or by calling the DeleteInstance operation.

• false: disables the Release Protection feature. In this case, you can release ECS instances in the ECS console or by calling the DeleteInstance operation.

StorageSetId

String

No

ss-bp67acfmxazb4p****

The ID of the storage set.

StorageSetPartitionNumber

Integer

No

2

The maximum number of partitions in the storage set. Valid values: integers greater than or equal to 2.

CustomPriorities.N.InstanceType

String

No

ecs.g6.large

You can use CustomPriorities to specify the priority of a custom ECS instance type + vSwitch combination. CustomPriorities.N.InstanceType specifies the ECS instance type in the custom combination.

If Auto Scaling cannot create ECS instances by using the ECS instance type + vSwitch combination that has the highest priority, ECS instances are automatically created by using the ECS instance type + vSwitch combination that has the next highest priority.

CustomPriorities.N.VswitchId

String

No

vsw-bp14zolna43z266bq****

You can use CustomPriorities.N.VswitchId to specify the vSwitch ID in a custom ECS instance type + vSwitch combination.

NetworkInterfaces.N.InstanceType

String

No

Primary

The ENI type. If you specify this parameter, you must also specify NetworkInterfaces.N to configure a primary ENI. You cannot specify SecurityGroupId or SecurityGroupIds.N. Valid values:

• Primary: the primary ENI.

• Secondary: the secondary ENI.

Default value: Secondary.

NetworkInterfaces.N.NetworkInterfaceTrafficMode

String

No

HighPerformance

The communication mode of the ENI. Valid values:

• Standard: uses the TCP communication mode.

• HighPerformance: enables the Elastic RDMA Interface (ERI) and uses the remote direct memory access (RDMA) communication mode.

Default value: Standard.

NetworkInterfaces.N.Ipv6AddressCount

Integer

No

1

The number of randomly generated IPv6 addresses that you want to assign to primary ENI N. When you specify this parameter, take note of the following items:

• This parameter takes effect only if you set NetworkInterfaces.N.InstanceType to Primary.

• If you set NetworkInterfaces.N.InstanceType to Secondary or leave the parameter empty, you cannot specify this parameter.

• After you specify this parameter, you can no longer specify Ipv6AddressCount.

NetworkInterfaces.N.SecurityGroupIds.N

String

No

sg-2ze55shrh****

The IDs of one or more security groups to which ENI N belongs. When you specify this parameter, take note of the following items:

• If you set NetworkInterfaces.N.InstanceType to Primary, you must specify this parameter. This parameter has the same effect as SecurityGroupIds.N. You can specify only one of SecurityGroupId and SecurityGroupIds.N.

• If you set NetworkInterfaces.N.InstanceType to Secondary or leave the parameter empty, this parameter is optional. The default value of this parameter is the ID of the security group to which ECS instances belong.

DedicatedHostClusterId

String

No

dc-2zedxc67zqzt7lb4****

The ID of the dedicated host cluster.

SecurityOptions.ConfidentialComputingMode

String

No

TDX

The confidential computing mode. Valid values:

• Enclave: builds an enclave-based confidential computing environment on each ECS instance. For more information, see Build a confidential computing environment by using Enclave.

• TDX: builds a Trust Domain Extensions (TDX) confidential computing environment on each ECS instance. For more information, see Build a TDX confidential computing environment.

HttpEndpoint

String

No

enabled

Specifies whether the access channel is enabled for instance metadata. Valid values:

• enabled: enables the access channel for instance metadata.

• disabled: disables the access channel for instance metadata.

Default value: enabled.

HttpTokens

String

No

optional

Specifies whether to forcibly use the security hardening mode (IMDSv2) to access instance metadata. Valid values:

• optional: does not forcibly use the security hardening mode (IMDSv2).

• required: forcibly uses the security hardening mode (IMDSv2). After you set this parameter to required, you can no longer access instance metadata in normal mode.

Default value: optional.

InternetMaxBandwidthIn

Integer

No

10

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

• If the purchased outbound public bandwidth is less than or equal to 10 Mbit/s, the valid values of this parameter are 1 to 10 and the default value is 10.

• If the purchased outbound public bandwidth is greater than 10 Mbit/s, the valid values of this parameter are 1 to the InternetMaxBandwidthOut value and the default value is the InternetMaxBandwidthOut value.

RequestId

String

473469C7-AA6F-4DC5-B3DB-A3DC0DE3****

The request ID.