本文属于机器翻译版本。若本译文内容与英语原文存在差异，则一律以英文原文为准。 # 将 `RequestSpotInstances` 与 CLI 配合使用 以下代码示例演示如何使用 `RequestSpotInstances`。 ------ #### [ CLI ] **AWS CLI** **请求竞价型实例** 此示例命令为指定可用区中的五个实例创建一次性竞价型实例请求。如果您的账户仅支持 EC2-VPC，则 Amazon EC2 会在指定可用区的默认子网中启动实例。如果您的账户支持 EC2-Classic，则 Amazon EC2 会在指定可用区中的 EC2-Classic 中启动实例。 命令: ``` aws ec2 request-spot-instances --spot-price "0.03" --instance-count 5 --type "one-time" --launch-specification file://specification.json ``` Specification.json： ``` { "ImageId": "ami-1a2b3c4d", "KeyName": "my-key-pair", "SecurityGroupIds": [ "sg-1a2b3c4d" ], "InstanceType": "m3.medium", "Placement": { "AvailabilityZone": "us-west-2a" }, "IamInstanceProfile": { "Arn": "arn:aws:iam::123456789012:instance-profile/my-iam-role" } } ``` 输出： ``` { "SpotInstanceRequests": [ { "Status": { "UpdateTime": "2014-03-25T20:54:21.000Z", "Code": "pending-evaluation", "Message": "Your Spot request has been submitted for review, and is pending evaluation." }, "ProductDescription": "Linux/UNIX", "SpotInstanceRequestId": "sir-df6f405d", "State": "open", "LaunchSpecification": { "Placement": { "AvailabilityZone": "us-west-2a" }, "ImageId": "ami-1a2b3c4d", "KeyName": "my-key-pair", "SecurityGroups": [ { "GroupName": "my-security-group", "GroupId": "sg-1a2b3c4d" } ], "Monitoring": { "Enabled": false }, "IamInstanceProfile": { "Arn": "arn:aws:iam::123456789012:instance-profile/my-iam-role" }, "InstanceType": "m3.medium" }, "Type": "one-time", "CreateTime": "2014-03-25T20:54:20.000Z", "SpotPrice": "0.050000" }, ... ] } ``` 此示例命令为指定子网中的五个实例创建一次性竞价型实例请求。Amazon EC2 会在指定子网中启动实例。如果 VPC 是一个非默认 VPC，则默认情况下，实例不会收到公有 IP 地址。 命令: ``` aws ec2 request-spot-instances --spot-price "0.050" --instance-count 5 --type "one-time" --launch-specification file://specification.json ``` Specification.json： ``` { "ImageId": "ami-1a2b3c4d", "SecurityGroupIds": [ "sg-1a2b3c4d" ], "InstanceType": "m3.medium", "SubnetId": "subnet-1a2b3c4d", "IamInstanceProfile": { "Arn": "arn:aws:iam::123456789012:instance-profile/my-iam-role" } } ``` 输出： ``` { "SpotInstanceRequests": [ { "Status": { "UpdateTime": "2014-03-25T22:21:58.000Z", "Code": "pending-evaluation", "Message": "Your Spot request has been submitted for review, and is pending evaluation." }, "ProductDescription": "Linux/UNIX", "SpotInstanceRequestId": "sir-df6f405d", "State": "open", "LaunchSpecification": { "Placement": { "AvailabilityZone": "us-west-2a" } "ImageId": "ami-1a2b3c4d" "SecurityGroups": [ { "GroupName": "my-security-group", "GroupID": "sg-1a2b3c4d" } ] "SubnetId": "subnet-1a2b3c4d", "Monitoring": { "Enabled": false }, "IamInstanceProfile": { "Arn": "arn:aws:iam::123456789012:instance-profile/my-iam-role" }, "InstanceType": "m3.medium", }, "Type": "one-time", "CreateTime": "2014-03-25T22:21:58.000Z", "SpotPrice": "0.050000" }, ... ] } ``` 此示例为您在非默认 VPC 中启动的竞价型实例分配公有 IP 地址。请注意，指定网络接口时，您必须包括使用网络接口的子网 ID 和安全组 ID。 命令: ``` aws ec2 request-spot-instances --spot-price "0.050" --instance-count 1 --type "one-time" --launch-specification file://specification.json ``` Specification.json： ``` { "ImageId": "ami-1a2b3c4d", "KeyName": "my-key-pair", "InstanceType": "m3.medium", "NetworkInterfaces": [ { "DeviceIndex": 0, "SubnetId": "subnet-1a2b3c4d", "Groups": [ "sg-1a2b3c4d" ], "AssociatePublicIpAddress": true } ], "IamInstanceProfile": { "Arn": "arn:aws:iam::123456789012:instance-profile/my-iam-role" } } ``` + 有关 API 的详细信息，请参阅*AWS CLI 命令参考[RequestSpotInstances](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ec2/request-spot-instances.html)*中的。 ------ #### [ PowerShell ] **适用于 PowerShell V4 的工具** **示例 1：此示例在指定的子网中请求一次性竞价型实例。请注意，必须为包含指定子网的 VPC 创建安全组，并且必须使用网络接口通过 ID 指定该安全组。指定网络接口时，您必须包括使用网络接口的子网 ID。** ``` $n = New-Object Amazon.EC2.Model.InstanceNetworkInterfaceSpecification $n.DeviceIndex = 0 $n.SubnetId = "subnet-12345678" $n.Groups.Add("sg-12345678") Request-EC2SpotInstance -InstanceCount 1 -SpotPrice 0.050 -Type one-time ` -IamInstanceProfile_Arn arn:aws:iam::123456789012:instance-profile/my-iam-role ` -LaunchSpecification_ImageId ami-12345678 ` -LaunchSpecification_InstanceType m3.medium ` -LaunchSpecification_NetworkInterface $n ``` **输出**： ``` ActualBlockHourlyPrice : AvailabilityZoneGroup : BlockDurationMinutes : 0 CreateTime : 12/26/2015 7:44:10 AM Fault : InstanceId : LaunchedAvailabilityZone : LaunchGroup : LaunchSpecification : Amazon.EC2.Model.LaunchSpecification ProductDescription : Linux/UNIX SpotInstanceRequestId : sir-12345678 SpotPrice : 0.050000 State : open Status : Amazon.EC2.Model.SpotInstanceStatus Tags : {} Type : one-time ``` + 有关 API 的详细信息，请参阅 *AWS Tools for PowerShell Cmdlet 参考 (V* 4) [RequestSpotInstances](https://docs.aws.amazon.com/powershell/v4/reference)中的。 **适用于 PowerShell V5 的工具** **示例 1：此示例在指定的子网中请求一次性竞价型实例。请注意，必须为包含指定子网的 VPC 创建安全组，并且必须使用网络接口通过 ID 指定该安全组。指定网络接口时，您必须包括使用网络接口的子网 ID。** ``` $n = New-Object Amazon.EC2.Model.InstanceNetworkInterfaceSpecification $n.DeviceIndex = 0 $n.SubnetId = "subnet-12345678" $n.Groups.Add("sg-12345678") Request-EC2SpotInstance -InstanceCount 1 -SpotPrice 0.050 -Type one-time ` -IamInstanceProfile_Arn arn:aws:iam::123456789012:instance-profile/my-iam-role ` -LaunchSpecification_ImageId ami-12345678 ` -LaunchSpecification_InstanceType m3.medium ` -LaunchSpecification_NetworkInterface $n ``` **输出**： ``` ActualBlockHourlyPrice : AvailabilityZoneGroup : BlockDurationMinutes : 0 CreateTime : 12/26/2015 7:44:10 AM Fault : InstanceId : LaunchedAvailabilityZone : LaunchGroup : LaunchSpecification : Amazon.EC2.Model.LaunchSpecification ProductDescription : Linux/UNIX SpotInstanceRequestId : sir-12345678 SpotPrice : 0.050000 State : open Status : Amazon.EC2.Model.SpotInstanceStatus Tags : {} Type : one-time ``` + 有关 API 的详细信息，请参阅 *AWS Tools for PowerShell Cmdlet 参考 (V* 5) [RequestSpotInstances](https://docs.aws.amazon.com/powershell/v5/reference)中的。 ------ 有关 S AWS DK 开发者指南和代码示例的完整列表，请参阅[使用 AWS SDK 创建 Amazon EC2 资源](sdk-general-information-section.md)。本主题还包括有关入门的信息以及有关先前的 SDK 版本的详细信息。