amazon-web-services - 云信息 : How to get SecondaryPrivateIP from an instance

Question

在下面的模板中，任何人都可以帮助我如何在不创建外部网络接口(interface)的情况下从实例中查找 SecondryPrivateIP。

"radmachine": {
  "Type": "AWS::EC2::Instance",
  "Properties": {
    "ImageId": "ami-abcde123",
    "InstanceType": "t2.micro",
    "KeyName": "radkey",
    "DisableApiTermination": "false",
    "NetworkInterfaces": [{
        "AssociatePublicIpAddress": "false",
        "DeviceIndex": "0",
        "DeleteOnTermination": "true",
        "SubnetId": "123456",
        "GroupSet": "sg-56789",
        "SecondaryPrivateIpAddressCount": "1"
    }],
    "BlockDeviceMappings": [{"DeviceName": "/dev/xvda","Ebs": {"VolumeType": "gp2","DeleteOnTermination": "false","VolumeSize": "8"}}],
  }
}

提前致谢。

Answer 1

通读:
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-network-interface.html http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/MultipleIP.html http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html#AvailableIpPerENI

了解其工作原理后，请查看:
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-getatt.html

您对以下内容感兴趣:AWS::EC2::NetworkInterface -> SecondaryPrivateIpAddresses

所以基本上，您请求将额外的辅助私有(private) ip 绑定(bind)到网络接口(interface)，然后使用 Fn::GetAtt 来检索在构建时提供给机器/接口(interface)的值。