AWS CLI Command Reference

[ aws . compute-optimizer ]

get-ec2-instance-recommendations

Description

Returns Amazon EC2 instance recommendations.

Compute Optimizer generates recommendations for Amazon Elastic Compute Cloud (Amazon EC2) instances that meet a specific set of requirements. For more information, see the Supported resources and requirements in the Compute Optimizer User Guide .

See also: AWS API Documentation

Synopsis

  get-ec2-instance-recommendations
[--instance-arns <value>]
[--next-token <value>]
[--max-results <value>]
[--filters <value>]
[--account-ids <value>]
[--recommendation-preferences <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]

Options

--instance-arns (list)

The Amazon Resource Name (ARN) of the instances for which to return recommendations.

(string)

Syntax:

"string" "string" ...

--next-token (string)

The token to advance to the next page of instance recommendations.

--max-results (integer)

The maximum number of instance recommendations to return with a single request.

To retrieve the remaining results, make another request with the returned nextToken value.

--filters (list)

An array of objects to specify a filter that returns a more specific list of instance recommendations.

(structure)

Describes a filter that returns a more specific list of recommendations. Use this filter with the GetAutoScalingGroupRecommendations and GetEC2InstanceRecommendations actions.

You can use EBSFilter with the GetEBSVolumeRecommendations action, LambdaFunctionRecommendationFilter with the GetLambdaFunctionRecommendations action, and JobFilter with the DescribeRecommendationExportJobs action.

name -> (string)

The name of the filter.

Specify Finding to return recommendations with a specific finding classification (for example, Underprovisioned ).

Specify RecommendationSourceType to return recommendations of a specific resource type (for example, Ec2Instance ).

Specify FindingReasonCodes to return recommendations with a specific finding reason code (for example, CPUUnderprovisioned ).

values -> (list)

The value of the filter.

The valid values for this parameter are as follows, depending on what you specify for the name parameter and the resource type that you wish to filter results for:

  • Specify Optimized or NotOptimized if you specify the name parameter as Finding and you want to filter results for Auto Scaling groups.

  • Specify Underprovisioned , Overprovisioned , or Optimized if you specify the name parameter as Finding and you want to filter results for EC2 instances.

  • Specify Ec2Instance or AutoScalingGroup if you specify the name parameter as RecommendationSourceType .

  • Specify one of the following options if you specify the name parameter as FindingReasonCodes :

    • **CPUOverprovisioned ** — The instance’s CPU configuration can be sized down while still meeting the performance requirements of your workload.

    • **CPUUnderprovisioned ** — The instance’s CPU configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better CPU performance.

    • **MemoryOverprovisioned ** — The instance’s memory configuration can be sized down while still meeting the performance requirements of your workload.

    • **MemoryUnderprovisioned ** — The instance’s memory configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better memory performance.

    • **EBSThroughputOverprovisioned ** — The instance’s EBS throughput configuration can be sized down while still meeting the performance requirements of your workload.

    • **EBSThroughputUnderprovisioned ** — The instance’s EBS throughput configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better EBS throughput performance.

    • **EBSIOPSOverprovisioned ** — The instance’s EBS IOPS configuration can be sized down while still meeting the performance requirements of your workload.

    • **EBSIOPSUnderprovisioned ** — The instance’s EBS IOPS configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better EBS IOPS performance.

    • **NetworkBandwidthOverprovisioned ** — The instance’s network bandwidth configuration can be sized down while still meeting the performance requirements of your workload.

    • **NetworkBandwidthUnderprovisioned ** — The instance’s network bandwidth configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better network bandwidth performance. This finding reason happens when the NetworkIn or NetworkOut performance of an instance is impacted.

    • **NetworkPPSOverprovisioned ** — The instance’s network PPS (packets per second) configuration can be sized down while still meeting the performance requirements of your workload.

    • **NetworkPPSUnderprovisioned ** — The instance’s network PPS (packets per second) configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better network PPS performance.

    • **DiskIOPSOverprovisioned ** — The instance’s disk IOPS configuration can be sized down while still meeting the performance requirements of your workload.

    • **DiskIOPSUnderprovisioned ** — The instance’s disk IOPS configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better disk IOPS performance.

    • **DiskThroughputOverprovisioned ** — The instance’s disk throughput configuration can be sized down while still meeting the performance requirements of your workload.

    • **DiskThroughputUnderprovisioned ** — The instance’s disk throughput configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better disk throughput performance.

(string)

Shorthand Syntax:

name=string,values=string,string ...

JSON Syntax:

[
  {
    "name": "Finding"|"FindingReasonCodes"|"RecommendationSourceType",
    "values": ["string", ...]
  }
  ...
]

--account-ids (list)

The ID of the Amazon Web Services account for which to return instance recommendations.

If your account is the management account of an organization, use this parameter to specify the member account for which you want to return instance recommendations.

Only one account ID can be specified per request.

(string)

Syntax:

"string" "string" ...

--recommendation-preferences (structure)

An object to specify the preferences for the Amazon EC2 instance recommendations to return in the response.

cpuVendorArchitectures -> (list)

Specifies the CPU vendor and architecture for Amazon EC2 instance and Auto Scaling group recommendations.

For example, when you specify AWS_ARM64 with:

  • A GetEC2InstanceRecommendations or GetAutoScalingGroupRecommendations request, Compute Optimizer returns recommendations that consist of Graviton2 instance types only.

  • A GetEC2RecommendationProjectedMetrics request, Compute Optimizer returns projected utilization metrics for Graviton2 instance type recommendations only.

  • A ExportEC2InstanceRecommendations or ExportAutoScalingGroupRecommendations request, Compute Optimizer exports recommendations that consist of Graviton2 instance types only.

(string)

Shorthand Syntax:

cpuVendorArchitectures=string,string

JSON Syntax:

{
  "cpuVendorArchitectures": ["AWS_ARM64"|"CURRENT", ...]
}

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

Global Options

--debug (boolean)

Turn on debug logging.

--endpoint-url (string)

Override command’s default URL with the given URL.

--no-verify-ssl (boolean)

By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.

--no-paginate (boolean)

Disable automatic pagination.

--output (string)

The formatting style for command output.

  • json

  • text

  • table

  • yaml

  • yaml-stream

--query (string)

A JMESPath query to use in filtering the response data.

--profile (string)

Use a specific profile from your credential file.

--region (string)

The region to use. Overrides config/env settings.

--version (string)

Display the version of this tool.

--color (string)

Turn on/off color output.

  • on

  • off

  • auto

--no-sign-request (boolean)

Do not sign requests. Credentials will not be loaded if this argument is provided.

--ca-bundle (string)

The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.

--cli-read-timeout (int)

The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.

--cli-connect-timeout (int)

The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.

--cli-binary-format (string)

The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. When using file:// the file contents will need to properly formatted for the configured cli-binary-format.

  • base64

  • raw-in-base64-out

--no-cli-pager (boolean)

Disable cli pager for output.

--cli-auto-prompt (boolean)

Automatically prompt for CLI input parameters.

--no-cli-auto-prompt (boolean)

Disable automatically prompt for CLI input parameters.

Output

nextToken -> (string)

The token to use to advance to the next page of instance recommendations.

This value is null when there are no more pages of instance recommendations to return.

instanceRecommendations -> (list)

An array of objects that describe instance recommendations.

(structure)

Describes an Amazon EC2 instance recommendation.

instanceArn -> (string)

The Amazon Resource Name (ARN) of the current instance.

accountId -> (string)

The Amazon Web Services account ID of the instance.

instanceName -> (string)

The name of the current instance.

currentInstanceType -> (string)

The instance type of the current instance.

finding -> (string)

The finding classification of the instance.

Findings for instances include:

  • **Underprovisioned ** —An instance is considered under-provisioned when at least one specification of your instance, such as CPU, memory, or network, does not meet the performance requirements of your workload. Under-provisioned instances may lead to poor application performance.

  • **Overprovisioned ** —An instance is considered over-provisioned when at least one specification of your instance, such as CPU, memory, or network, can be sized down while still meeting the performance requirements of your workload, and no specification is under-provisioned. Over-provisioned instances may lead to unnecessary infrastructure cost.

  • **Optimized ** —An instance is considered optimized when all specifications of your instance, such as CPU, memory, and network, meet the performance requirements of your workload and is not over provisioned. For optimized resources, Compute Optimizer might recommend a new generation instance type.

findingReasonCodes -> (list)

The reason for the finding classification of the instance.

Finding reason codes for instances include:

  • **CPUOverprovisioned ** — The instance’s CPU configuration can be sized down while still meeting the performance requirements of your workload. This is identified by analyzing the CPUUtilization metric of the current instance during the look-back period.

  • **CPUUnderprovisioned ** — The instance’s CPU configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better CPU performance. This is identified by analyzing the CPUUtilization metric of the current instance during the look-back period.

  • **MemoryOverprovisioned ** — The instance’s memory configuration can be sized down while still meeting the performance requirements of your workload. This is identified by analyzing the memory utilization metric of the current instance during the look-back period.

  • **MemoryUnderprovisioned ** — The instance’s memory configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better memory performance. This is identified by analyzing the memory utilization metric of the current instance during the look-back period.

Note

Memory utilization is analyzed only for resources that have the unified CloudWatch agent installed on them. For more information, see Enabling memory utilization with the Amazon CloudWatch Agent in the Compute Optimizer User Guide . On Linux instances, Compute Optimizer analyses the mem_used_percent metric in the CWAgent namespace, or the legacy MemoryUtilization metric in the System/Linux namespace. On Windows instances, Compute Optimizer analyses the Memory % Committed Bytes In Use metric in the CWAgent namespace.

  • **EBSThroughputOverprovisioned ** — The instance’s EBS throughput configuration can be sized down while still meeting the performance requirements of your workload. This is identified by analyzing the VolumeReadOps and VolumeWriteOps metrics of EBS volumes attached to the current instance during the look-back period.

  • **EBSThroughputUnderprovisioned ** — The instance’s EBS throughput configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better EBS throughput performance. This is identified by analyzing the VolumeReadOps and VolumeWriteOps metrics of EBS volumes attached to the current instance during the look-back period.

  • **EBSIOPSOverprovisioned ** — The instance’s EBS IOPS configuration can be sized down while still meeting the performance requirements of your workload. This is identified by analyzing the VolumeReadBytes and VolumeWriteBytes metric of EBS volumes attached to the current instance during the look-back period.

  • **EBSIOPSUnderprovisioned ** — The instance’s EBS IOPS configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better EBS IOPS performance. This is identified by analyzing the VolumeReadBytes and VolumeWriteBytes metric of EBS volumes attached to the current instance during the look-back period.

  • **NetworkBandwidthOverprovisioned ** — The instance’s network bandwidth configuration can be sized down while still meeting the performance requirements of your workload. This is identified by analyzing the NetworkIn and NetworkOut metrics of the current instance during the look-back period.

  • **NetworkBandwidthUnderprovisioned ** — The instance’s network bandwidth configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better network bandwidth performance. This is identified by analyzing the NetworkIn and NetworkOut metrics of the current instance during the look-back period. This finding reason happens when the NetworkIn or NetworkOut performance of an instance is impacted.

  • **NetworkPPSOverprovisioned ** — The instance’s network PPS (packets per second) configuration can be sized down while still meeting the performance requirements of your workload. This is identified by analyzing the NetworkPacketsIn and NetworkPacketsIn metrics of the current instance during the look-back period.

  • **NetworkPPSUnderprovisioned ** — The instance’s network PPS (packets per second) configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better network PPS performance. This is identified by analyzing the NetworkPacketsIn and NetworkPacketsIn metrics of the current instance during the look-back period.

  • **DiskIOPSOverprovisioned ** — The instance’s disk IOPS configuration can be sized down while still meeting the performance requirements of your workload. This is identified by analyzing the DiskReadOps and DiskWriteOps metrics of the current instance during the look-back period.

  • **DiskIOPSUnderprovisioned ** — The instance’s disk IOPS configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better disk IOPS performance. This is identified by analyzing the DiskReadOps and DiskWriteOps metrics of the current instance during the look-back period.

  • **DiskThroughputOverprovisioned ** — The instance’s disk throughput configuration can be sized down while still meeting the performance requirements of your workload. This is identified by analyzing the DiskReadBytes and DiskWriteBytes metrics of the current instance during the look-back period.

  • **DiskThroughputUnderprovisioned ** — The instance’s disk throughput configuration doesn’t meet the performance requirements of your workload and there is an alternative instance type that provides better disk throughput performance. This is identified by analyzing the DiskReadBytes and DiskWriteBytes metrics of the current instance during the look-back period.

Note

For more information about instance metrics, see List the available CloudWatch metrics for your instances in the Amazon Elastic Compute Cloud User Guide . For more information about EBS volume metrics, see Amazon CloudWatch metrics for Amazon EBS in the Amazon Elastic Compute Cloud User Guide .

(string)

utilizationMetrics -> (list)

An array of objects that describe the utilization metrics of the instance.

(structure)

Describes a utilization metric of a resource, such as an Amazon EC2 instance.

Compare the utilization metric data of your resource against its projected utilization metric data to determine the performance difference between your current resource and the recommended option.

name -> (string)

The name of the utilization metric.

The following utilization metrics are available:

  • Cpu - The percentage of allocated EC2 compute units that are currently in use on the instance. This metric identifies the processing power required to run an application on the instance. Depending on the instance type, tools in your operating system can show a lower percentage than CloudWatch when the instance is not allocated a full processor core. Units: Percent

  • Memory - The percentage of memory that is currently in use on the instance. This metric identifies the amount of memory required to run an application on the instance. Units: Percent

Note

The Memory metric is returned only for resources that have the unified CloudWatch agent installed on them. For more information, see Enabling Memory Utilization with the CloudWatch Agent .

  • EBS_READ_OPS_PER_SECOND - The completed read operations from all EBS volumes attached to the instance in a specified period of time. Unit: Count

  • EBS_WRITE_OPS_PER_SECOND - The completed write operations to all EBS volumes attached to the instance in a specified period of time. Unit: Count

  • EBS_READ_BYTES_PER_SECOND - The bytes read from all EBS volumes attached to the instance in a specified period of time. Unit: Bytes

  • EBS_WRITE_BYTES_PER_SECOND - The bytes written to all EBS volumes attached to the instance in a specified period of time. Unit: Bytes

  • DISK_READ_OPS_PER_SECOND - The completed read operations from all instance store volumes available to the instance in a specified period of time. If there are no instance store volumes, either the value is 0 or the metric is not reported.

  • DISK_WRITE_OPS_PER_SECOND - The completed write operations from all instance store volumes available to the instance in a specified period of time. If there are no instance store volumes, either the value is 0 or the metric is not reported.

  • DISK_READ_BYTES_PER_SECOND - The bytes read from all instance store volumes available to the instance. This metric is used to determine the volume of the data the application reads from the disk of the instance. This can be used to determine the speed of the application. If there are no instance store volumes, either the value is 0 or the metric is not reported.

  • DISK_WRITE_BYTES_PER_SECOND - The bytes written to all instance store volumes available to the instance. This metric is used to determine the volume of the data the application writes onto the disk of the instance. This can be used to determine the speed of the application. If there are no instance store volumes, either the value is 0 or the metric is not reported.

  • NETWORK_IN_BYTES_PER_SECOND - The number of bytes received by the instance on all network interfaces. This metric identifies the volume of incoming network traffic to a single instance.

  • NETWORK_OUT_BYTES_PER_SECOND - The number of bytes sent out by the instance on all network interfaces. This metric identifies the volume of outgoing network traffic from a single instance.

  • NETWORK_PACKETS_IN_PER_SECOND - The number of packets received by the instance on all network interfaces. This metric identifies the volume of incoming traffic in terms of the number of packets on a single instance.

  • NETWORK_PACKETS_OUT_PER_SECOND - The number of packets sent out by the instance on all network interfaces. This metric identifies the volume of outgoing traffic in terms of the number of packets on a single instance.

statistic -> (string)

The statistic of the utilization metric.

The Compute Optimizer API, Command Line Interface (CLI), and SDKs return utilization metrics using only the Maximum statistic, which is the highest value observed during the specified period.

The Compute Optimizer console displays graphs for some utilization metrics using the Average statistic, which is the value of Sum / SampleCount during the specified period. For more information, see Viewing resource recommendations in the Compute Optimizer User Guide . You can also get averaged utilization metric data for your resources using Amazon CloudWatch. For more information, see the Amazon CloudWatch User Guide .

value -> (double)

The value of the utilization metric.

lookBackPeriodInDays -> (double)

The number of days for which utilization metrics were analyzed for the instance.

recommendationOptions -> (list)

An array of objects that describe the recommendation options for the instance.

(structure)

Describes a recommendation option for an Amazon EC2 instance.

instanceType -> (string)

The instance type of the instance recommendation.

projectedUtilizationMetrics -> (list)

An array of objects that describe the projected utilization metrics of the instance recommendation option.

Note

The Cpu and Memory metrics are the only projected utilization metrics returned. Additionally, the Memory metric is returned only for resources that have the unified CloudWatch agent installed on them. For more information, see Enabling Memory Utilization with the CloudWatch Agent .

(structure)

Describes a utilization metric of a resource, such as an Amazon EC2 instance.

Compare the utilization metric data of your resource against its projected utilization metric data to determine the performance difference between your current resource and the recommended option.

name -> (string)

The name of the utilization metric.

The following utilization metrics are available:

  • Cpu - The percentage of allocated EC2 compute units that are currently in use on the instance. This metric identifies the processing power required to run an application on the instance. Depending on the instance type, tools in your operating system can show a lower percentage than CloudWatch when the instance is not allocated a full processor core. Units: Percent

  • Memory - The percentage of memory that is currently in use on the instance. This metric identifies the amount of memory required to run an application on the instance. Units: Percent

Note

The Memory metric is returned only for resources that have the unified CloudWatch agent installed on them. For more information, see Enabling Memory Utilization with the CloudWatch Agent .

  • EBS_READ_OPS_PER_SECOND - The completed read operations from all EBS volumes attached to the instance in a specified period of time. Unit: Count

  • EBS_WRITE_OPS_PER_SECOND - The completed write operations to all EBS volumes attached to the instance in a specified period of time. Unit: Count

  • EBS_READ_BYTES_PER_SECOND - The bytes read from all EBS volumes attached to the instance in a specified period of time. Unit: Bytes

  • EBS_WRITE_BYTES_PER_SECOND - The bytes written to all EBS volumes attached to the instance in a specified period of time. Unit: Bytes

  • DISK_READ_OPS_PER_SECOND - The completed read operations from all instance store volumes available to the instance in a specified period of time. If there are no instance store volumes, either the value is 0 or the metric is not reported.

  • DISK_WRITE_OPS_PER_SECOND - The completed write operations from all instance store volumes available to the instance in a specified period of time. If there are no instance store volumes, either the value is 0 or the metric is not reported.

  • DISK_READ_BYTES_PER_SECOND - The bytes read from all instance store volumes available to the instance. This metric is used to determine the volume of the data the application reads from the disk of the instance. This can be used to determine the speed of the application. If there are no instance store volumes, either the value is 0 or the metric is not reported.

  • DISK_WRITE_BYTES_PER_SECOND - The bytes written to all instance store volumes available to the instance. This metric is used to determine the volume of the data the application writes onto the disk of the instance. This can be used to determine the speed of the application. If there are no instance store volumes, either the value is 0 or the metric is not reported.

  • NETWORK_IN_BYTES_PER_SECOND - The number of bytes received by the instance on all network interfaces. This metric identifies the volume of incoming network traffic to a single instance.

  • NETWORK_OUT_BYTES_PER_SECOND - The number of bytes sent out by the instance on all network interfaces. This metric identifies the volume of outgoing network traffic from a single instance.

  • NETWORK_PACKETS_IN_PER_SECOND - The number of packets received by the instance on all network interfaces. This metric identifies the volume of incoming traffic in terms of the number of packets on a single instance.

  • NETWORK_PACKETS_OUT_PER_SECOND - The number of packets sent out by the instance on all network interfaces. This metric identifies the volume of outgoing traffic in terms of the number of packets on a single instance.

statistic -> (string)

The statistic of the utilization metric.

The Compute Optimizer API, Command Line Interface (CLI), and SDKs return utilization metrics using only the Maximum statistic, which is the highest value observed during the specified period.

The Compute Optimizer console displays graphs for some utilization metrics using the Average statistic, which is the value of Sum / SampleCount during the specified period. For more information, see Viewing resource recommendations in the Compute Optimizer User Guide . You can also get averaged utilization metric data for your resources using Amazon CloudWatch. For more information, see the Amazon CloudWatch User Guide .

value -> (double)

The value of the utilization metric.

platformDifferences -> (list)

Describes the configuration differences between the current instance and the recommended instance type. You should consider the configuration differences before migrating your workloads from the current instance to the recommended instance type. The Change the instance type guide for Linux and Change the instance type guide for Windows provide general guidance for getting started with an instance migration.

Platform differences include:

  • **Hypervisor ** — The hypervisor of the recommended instance type is different than that of the current instance. For example, the recommended instance type uses a Nitro hypervisor and the current instance uses a Xen hypervisor. The differences that you should consider between these hypervisors are covered in the Nitro Hypervisor section of the Amazon EC2 frequently asked questions. For more information, see Instances built on the Nitro System in the Amazon EC2 User Guide for Linux , or Instances built on the Nitro System in the Amazon EC2 User Guide for Windows .

  • **NetworkInterface ** — The network interface of the recommended instance type is different than that of the current instance. For example, the recommended instance type supports enhanced networking and the current instance might not. To enable enhanced networking for the recommended instance type, you must install the Elastic Network Adapter (ENA) driver or the Intel 82599 Virtual Function driver. For more information, see Networking and storage features and Enhanced networking on Linux in the Amazon EC2 User Guide for Linux , or Networking and storage features and Enhanced networking on Windows in the Amazon EC2 User Guide for Windows .

  • **StorageInterface ** — The storage interface of the recommended instance type is different than that of the current instance. For example, the recommended instance type uses an NVMe storage interface and the current instance does not. To access NVMe volumes for the recommended instance type, you will need to install or upgrade the NVMe driver. For more information, see Networking and storage features and Amazon EBS and NVMe on Linux instances in the Amazon EC2 User Guide for Linux , or Networking and storage features and Amazon EBS and NVMe on Windows instances in the Amazon EC2 User Guide for Windows .

  • **InstanceStoreAvailability ** — The recommended instance type does not support instance store volumes and the current instance does. Before migrating, you might need to back up the data on your instance store volumes if you want to preserve them. For more information, see How do I back up an instance store volume on my Amazon EC2 instance to Amazon EBS? in the Amazon Web Services Premium Support Knowledge Base . For more information, see Networking and storage features and Amazon EC2 instance store in the Amazon EC2 User Guide for Linux , or see Networking and storage features and Amazon EC2 instance store in the Amazon EC2 User Guide for Windows .

  • **VirtualizationType ** — The recommended instance type uses the hardware virtual machine (HVM) virtualization type and the current instance uses the paravirtual (PV) virtualization type. For more information about the differences between these virtualization types, see Linux AMI virtualization types in the Amazon EC2 User Guide for Linux , or Windows AMI virtualization types in the Amazon EC2 User Guide for Windows .

  • **Architecture ** — The CPU architecture between the recommended instance type and the current instance is different. For example, the recommended instance type might use an Arm CPU architecture and the current instance type might use a different one, such as x86. Before migrating, you should consider recompiling the software on your instance for the new architecture. Alternatively, you might switch to an Amazon Machine Image (AMI) that supports the new architecture. For more information about the CPU architecture for each instance type, see Amazon EC2 Instance Types .

(string)

performanceRisk -> (double)

The performance risk of the instance recommendation option.

Performance risk indicates the likelihood of the recommended instance type not meeting the resource needs of your workload. Compute Optimizer calculates an individual performance risk score for each specification of the recommended instance, including CPU, memory, EBS throughput, EBS IOPS, disk throughput, disk IOPS, network throughput, and network PPS. The performance risk of the recommended instance is calculated as the maximum performance risk score across the analyzed resource specifications.

The value ranges from 0 - 4 , with 0 meaning that the recommended resource is predicted to always provide enough hardware capability. The higher the performance risk is, the more likely you should validate whether the recommendation will meet the performance requirements of your workload before migrating your resource.

rank -> (integer)

The rank of the instance recommendation option.

The top recommendation option is ranked as 1 .

savingsOpportunity -> (structure)

An object that describes the savings opportunity for the instance recommendation option. Savings opportunity includes the estimated monthly savings amount and percentage.

savingsOpportunityPercentage -> (double)

The estimated monthly savings possible as a percentage of monthly cost by adopting Compute Optimizer recommendations for a given resource.

estimatedMonthlySavings -> (structure)

An object that describes the estimated monthly savings amount possible, based on On-Demand instance pricing, by adopting Compute Optimizer recommendations for a given resource.

currency -> (string)

The currency of the estimated monthly savings.

value -> (double)

The value of the estimated monthly savings.

migrationEffort -> (string)

The level of effort required to migrate from the current instance type to the recommended instance type.

For example, the migration effort is Low if Amazon EMR is the inferred workload type and an Amazon Web Services Graviton instance type is recommended. The migration effort is Medium if a workload type couldn’t be inferred but an Amazon Web Services Graviton instance type is recommended. The migration effort is VeryLow if both the current and recommended instance types are of the same CPU architecture.

recommendationSources -> (list)

An array of objects that describe the source resource of the recommendation.

(structure)

Describes the source of a recommendation, such as an Amazon EC2 instance or Auto Scaling group.

recommendationSourceArn -> (string)

The Amazon Resource Name (ARN) of the recommendation source.

recommendationSourceType -> (string)

The resource type of the recommendation source.

lastRefreshTimestamp -> (timestamp)

The timestamp of when the instance recommendation was last generated.

currentPerformanceRisk -> (string)

The risk of the current instance not meeting the performance needs of its workloads. The higher the risk, the more likely the current instance cannot meet the performance requirements of its workload.

effectiveRecommendationPreferences -> (structure)

An object that describes the effective recommendation preferences for the instance.

cpuVendorArchitectures -> (list)

Describes the CPU vendor and architecture for an instance or Auto Scaling group recommendations.

For example, when you specify AWS_ARM64 with:

  • A GetEC2InstanceRecommendations or GetAutoScalingGroupRecommendations request, Compute Optimizer returns recommendations that consist of Graviton2 instance types only.

  • A GetEC2RecommendationProjectedMetrics request, Compute Optimizer returns projected utilization metrics for Graviton2 instance type recommendations only.

  • A ExportEC2InstanceRecommendations or ExportAutoScalingGroupRecommendations request, Compute Optimizer exports recommendations that consist of Graviton2 instance types only.

(string)

enhancedInfrastructureMetrics -> (string)

Describes the activation status of the enhanced infrastructure metrics preference.

A status of Active confirms that the preference is applied in the latest recommendation refresh, and a status of Inactive confirms that it’s not yet applied to recommendations.

For more information, see Enhanced infrastructure metrics in the Compute Optimizer User Guide .

inferredWorkloadTypes -> (string)

Describes the activation status of the inferred workload types preference.

A status of Active confirms that the preference is applied in the latest recommendation refresh. A status of Inactive confirms that it’s not yet applied to recommendations.

externalMetricsPreference -> (structure)

An object that describes the external metrics recommendation preference.

If the preference is applied in the latest recommendation refresh, an object with a valid source value appears in the response. If the preference isn’t applied to the recommendations already, then this object doesn’t appear in the response.

source -> (string)

Contains the source options for external metrics preferences.

inferredWorkloadTypes -> (list)

The applications that might be running on the instance as inferred by Compute Optimizer.

Compute Optimizer can infer if one of the following applications might be running on the instance:

  • AmazonEmr - Infers that Amazon EMR might be running on the instance.

  • ApacheCassandra - Infers that Apache Cassandra might be running on the instance.

  • ApacheHadoop - Infers that Apache Hadoop might be running on the instance.

  • Memcached - Infers that Memcached might be running on the instance.

  • NGINX - Infers that NGINX might be running on the instance.

  • PostgreSql - Infers that PostgreSQL might be running on the instance.

  • Redis - Infers that Redis might be running on the instance.

(string)

errors -> (list)

An array of objects that describe errors of the request.

For example, an error is returned if you request recommendations for an instance of an unsupported instance family.

(structure)

Describes an error experienced when getting recommendations.

For example, an error is returned if you request recommendations for an unsupported Auto Scaling group, or if you request recommendations for an instance of an unsupported instance family.

identifier -> (string)

The ID of the error.

code -> (string)

The error code.

message -> (string)

The message, or reason, for the error.

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