{ "$schema": "https://json-structure.org/meta/core/v0/#", "$id": "https://raw.githubusercontent.com/api-evangelist/amazon-ec2-auto-scaling/refs/heads/main/json-structure/ec2-auto-scaling-instance-requirements-structure.json", "name": "InstanceRequirements", "description": "

The attributes for the instance types for a mixed instances policy. Amazon EC2 Auto Scaling uses your specified requirements to identify instance types. Then, it uses your On-Demand and Spot allocation strategies to launch instances from these instance types.

When you specify multiple attributes, you get instance types that satisfy all of the specified attributes. If you specify multiple values for an attribute, you get instance types that satisfy any of the specified values.

To limit the list of instance types from which Amazon EC2 Auto Scaling can identify matching instance types, you can use one of the following parameters, but not both in the same request:

You must specify VCpuCount and MemoryMiB. All other attributes are optional. Any unspecified optional attribute is set to its default.

For more information, see Creating an Auto Scaling group using attribute-based instance type selection in the Amazon EC2 Auto Scaling User Guide. For help determining which instance types match your attributes before you apply them to your Auto Scaling group, see Preview instance types with specified attributes in the Amazon EC2 User Guide for Linux Instances.

", "type": "object", "properties": { "VCpuCount": { "allOf": [ { "$ref": "#/components/schemas/VCpuCountRequest" }, { "description": "The minimum and maximum number of vCPUs for an instance type." } ] }, "MemoryMiB": { "allOf": [ { "$ref": "#/components/schemas/MemoryMiBRequest" }, { "description": "The minimum and maximum instance memory size for an instance type, in MiB." } ] }, "CpuManufacturers": { "allOf": [ { "$ref": "#/components/schemas/CpuManufacturers" }, { "description": "

Lists which specific CPU manufacturers to include.

Don't confuse the CPU hardware manufacturer with the CPU hardware architecture. Instances will be launched with a compatible CPU architecture based on the Amazon Machine Image (AMI) that you specify in your launch template.

Default: Any manufacturer

" } ] }, "MemoryGiBPerVCpu": { "allOf": [ { "$ref": "#/components/schemas/MemoryGiBPerVCpuRequest" }, { "description": "

The minimum and maximum amount of memory per vCPU for an instance type, in GiB.

Default: No minimum or maximum limits

" } ] }, "ExcludedInstanceTypes": { "allOf": [ { "$ref": "#/components/schemas/ExcludedInstanceTypes" }, { "description": "

The instance types to exclude. You can use strings with one or more wild cards, represented by an asterisk (*), to exclude an instance family, type, size, or generation. The following are examples: m5.8xlarge, c5*.*, m5a.*, r*, *3*.

For example, if you specify c5*, you are excluding the entire C5 instance family, which includes all C5a and C5n instance types. If you specify m5a.*, Amazon EC2 Auto Scaling will exclude all the M5a instance types, but not the M5n instance types.

If you specify ExcludedInstanceTypes, you can't specify AllowedInstanceTypes.

Default: No excluded instance types

" } ] }, "InstanceGenerations": { "allOf": [ { "$ref": "#/components/schemas/InstanceGenerations" }, { "description": "

Indicates whether current or previous generation instance types are included.

Default: Any current or previous generation

" } ] }, "SpotMaxPricePercentageOverLowestPrice": { "allOf": [ { "$ref": "#/components/schemas/NullablePositiveInteger" }, { "description": "

The price protection threshold for Spot Instances. This is the maximum you\u2019ll pay for a Spot Instance, expressed as a percentage higher than the least expensive current generation M, C, or R instance type with your specified attributes. When Amazon EC2 Auto Scaling selects instance types with your attributes, we will exclude instance types whose price is higher than your threshold. The parameter accepts an integer, which Amazon EC2 Auto Scaling interprets as a percentage. To turn off price protection, specify a high value, such as 999999.

If you set DesiredCapacityType to vcpu or memory-mib, the price protection threshold is applied based on the per vCPU or per memory price instead of the per instance price.

Default: 100

" } ] }, "OnDemandMaxPricePercentageOverLowestPrice": { "allOf": [ { "$ref": "#/components/schemas/NullablePositiveInteger" }, { "description": "

The price protection threshold for On-Demand Instances. This is the maximum you\u2019ll pay for an On-Demand Instance, expressed as a percentage higher than the least expensive current generation M, C, or R instance type with your specified attributes. When Amazon EC2 Auto Scaling selects instance types with your attributes, we will exclude instance types whose price is higher than your threshold. The parameter accepts an integer, which Amazon EC2 Auto Scaling interprets as a percentage. To turn off price protection, specify a high value, such as 999999.

If you set DesiredCapacityType to vcpu or memory-mib, the price protection threshold is applied based on the per vCPU or per memory price instead of the per instance price.

Default: 20

" } ] }, "BareMetal": { "allOf": [ { "$ref": "#/components/schemas/BareMetal" }, { "description": "

Indicates whether bare metal instance types are included, excluded, or required.

Default: excluded

" } ] }, "BurstablePerformance": { "allOf": [ { "$ref": "#/components/schemas/BurstablePerformance" }, { "description": "

Indicates whether burstable performance instance types are included, excluded, or required. For more information, see Burstable performance instances in the Amazon EC2 User Guide for Linux Instances.

Default: excluded

" } ] }, "RequireHibernateSupport": { "allOf": [ { "$ref": "#/components/schemas/NullableBoolean" }, { "description": "

Indicates whether instance types must provide On-Demand Instance hibernation support.

Default: false

" } ] }, "NetworkInterfaceCount": { "allOf": [ { "$ref": "#/components/schemas/NetworkInterfaceCountRequest" }, { "description": "

The minimum and maximum number of network interfaces for an instance type.

Default: No minimum or maximum limits

" } ] }, "LocalStorage": { "allOf": [ { "$ref": "#/components/schemas/LocalStorage" }, { "description": "

Indicates whether instance types with instance store volumes are included, excluded, or required. For more information, see Amazon EC2 instance store in the Amazon EC2 User Guide for Linux Instances.

Default: included

" } ] }, "LocalStorageTypes": { "allOf": [ { "$ref": "#/components/schemas/LocalStorageTypes" }, { "description": "

Indicates the type of local storage that is required.

Default: Any local storage type

" } ] }, "TotalLocalStorageGB": { "allOf": [ { "$ref": "#/components/schemas/TotalLocalStorageGBRequest" }, { "description": "

The minimum and maximum total local storage size for an instance type, in GB.

Default: No minimum or maximum limits

" } ] }, "BaselineEbsBandwidthMbps": { "allOf": [ { "$ref": "#/components/schemas/BaselineEbsBandwidthMbpsRequest" }, { "description": "

The minimum and maximum baseline bandwidth performance for an instance type, in Mbps. For more information, see Amazon EBS\u2013optimized instances in the Amazon EC2 User Guide for Linux Instances.

Default: No minimum or maximum limits

" } ] }, "AcceleratorTypes": { "allOf": [ { "$ref": "#/components/schemas/AcceleratorTypes" }, { "description": "

Lists the accelerator types that must be on an instance type.

Default: Any accelerator type

" } ] }, "AcceleratorCount": { "allOf": [ { "$ref": "#/components/schemas/AcceleratorCountRequest" }, { "description": "

The minimum and maximum number of accelerators (GPUs, FPGAs, or Amazon Web Services Inferentia chips) for an instance type.

To exclude accelerator-enabled instance types, set Max to 0.

Default: No minimum or maximum limits

" } ] }, "AcceleratorManufacturers": { "allOf": [ { "$ref": "#/components/schemas/AcceleratorManufacturers" }, { "description": "

Indicates whether instance types must have accelerators by specific manufacturers.

Default: Any manufacturer

" } ] }, "AcceleratorNames": { "allOf": [ { "$ref": "#/components/schemas/AcceleratorNames" }, { "description": "

Lists the accelerators that must be on an instance type.

Default: Any accelerator

" } ] }, "AcceleratorTotalMemoryMiB": { "allOf": [ { "$ref": "#/components/schemas/AcceleratorTotalMemoryMiBRequest" }, { "description": "

The minimum and maximum total memory size for the accelerators on an instance type, in MiB.

Default: No minimum or maximum limits

" } ] }, "NetworkBandwidthGbps": { "allOf": [ { "$ref": "#/components/schemas/NetworkBandwidthGbpsRequest" }, { "description": "

The minimum and maximum amount of network bandwidth, in gigabits per second (Gbps).

Default: No minimum or maximum limits

" } ] }, "AllowedInstanceTypes": { "allOf": [ { "$ref": "#/components/schemas/AllowedInstanceTypes" }, { "description": "

The instance types to apply your specified attributes against. All other instance types are ignored, even if they match your specified attributes.

You can use strings with one or more wild cards, represented by an asterisk (*), to allow an instance type, size, or generation. The following are examples: m5.8xlarge, c5*.*, m5a.*, r*, *3*.

For example, if you specify c5*, Amazon EC2 Auto Scaling will allow the entire C5 instance family, which includes all C5a and C5n instance types. If you specify m5a.*, Amazon EC2 Auto Scaling will allow all the M5a instance types, but not the M5n instance types.

If you specify AllowedInstanceTypes, you can't specify ExcludedInstanceTypes.

Default: All instance types

" } ] } }, "required": [ "VCpuCount", "MemoryMiB" ] }