amazon-web-services - 在 CloudFormation 模板中使用现有的弹性 IP，而不是生成新的弹性 IP？

Question

我目前在这里有我的模板，用于为我的实例分配 EIP。 (最后部分)

但是，我希望使用固定的 EIP，而不是依赖 CloudFormation 每次随机生成新的 EIP。

Resources:
  EC2Example:
    Type: "AWS::EC2::Instance"
    Metadata:
      AWS::CloudFormation::Init:
        services:
          sysvint:
            codedeploy-agent:
              enabled: 'true'
              ensureRunning: 'true'
    Properties:
      ImageId: !Ref ImageId
      InstanceType: !Ref InstanceType
      KeyName: !Ref SSHKeyName
      IamInstanceProfile: "EC2CodeDeploy"
      NetworkInterfaces: 
        - AssociatePublicIpAddress: "true"
          DeviceIndex: "0"
          GroupSet: 
            - Ref: "SecurityGroupIds"
          SubnetId: 
            Ref: "PrivateSubnet"
      BlockDeviceMappings:
        -
          DeviceName: /dev/sda1
          Ebs:
            VolumeType: io1
            Iops: !Ref IOPS
            DeleteOnTermination: false
            VolumeSize: !Ref VolumeSize
  ElasticIP:
    Type: AWS::EC2::EIP
    Properties:
      Domain: vpc
      InstanceId: !Ref EC2Example 

Answer 1

您必须使用AWS::EC2::EIPAssociation 。对于您的情况:

  AssociateControlPort:
    Type: AWS::EC2::EIPAssociation
    Properties:
      AllocationId: !GetAtt ElasticIP.AllocationId
      InstanceId: !Ref EC2Example