CF template to create EC2 instance with EIP attached.

ec2-eip.yaml

AWSTemplateFormatVersion: 2010-09-09
Description: >-
  AWS CloudFormation Sample Template EIP_With_Association: This template
  creates an Amazon EC2 instance and an Elastic IP Address. You will be
  billed for the AWS resources used if you create a stack from this template.
Parameters:
  InstanceType:
    Description: Web Server EC2 instance type
    Type: String
    Default: t2.small
    AllowedValues:
      - t1.micro
      - t2.nano
      - t2.micro
      - t2.small
      - t2.medium
      - t2.large
    ConstraintDescription: must be a valid EC2 instance type.
  KeyName:
    Description: Name of an existing EC2 KeyPair to enable SSH access to the instances
    Type: 'AWS::EC2::KeyPair::KeyName'
    ConstraintDescription: must be the name of an existing EC2 KeyPair.
  SSHLocation:
    Description: The IP address range that can be used to SSH to the EC2 instances
    Type: String
    MinLength: '9'
    MaxLength: '18'
    Default: 0.0.0.0/0
    AllowedPattern: '(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/(\d{1,2})'
    ConstraintDescription: Must be a valid IP CIDR range of the form x.x.x.x/x.
Mappings:
  AWSInstanceType2Arch:
    t1.micro:
      Arch: HVM64
    t2.nano:
      Arch: HVM64
    t2.micro:
      Arch: HVM64
    t2.small:
      Arch: HVM64
    t2.medium:
      Arch: HVM64
    t2.large:
      Arch: HVM64
  AWSInstanceType2NATArch:
    t1.micro:
      Arch: NATHVM64
    t2.nano:
      Arch: NATHVM64
    t2.micro:
      Arch: NATHVM64
    t2.small:
      Arch: NATHVM64
    t2.medium:
      Arch: NATHVM64
    t2.large:
      Arch: NATHVM64
  AWSRegionArch2AMI:
    us-east-1:
      HVM64: ami-032930428bf1abbff
      HVMG2: ami-0aeb704d503081ea6
    us-east-2:
      HVM64: ami-027cab9a7bf0155df
      HVMG2: NOT_SUPPORTED
    us-west-1:
      HVM64: ami-088c153f74339f34c
      HVMG2: ami-0a7fc72dc0e51aa77
    us-west-2:
      HVM64: ami-01fee56b22f308154
      HVMG2: ami-0fe84a5b4563d8f27
Resources:
  EC2Instance:
    Type: 'AWS::EC2::Instance'
    Properties:
      UserData: !Base64 
        'Fn::Join':
          - ''
          - - IPAddress=
            - !Ref IPAddress
      InstanceType: !Ref InstanceType
      SecurityGroups:
        - !Ref InstanceSecurityGroup
      KeyName: !Ref KeyName
      ImageId: !FindInMap 
        - AWSRegionArch2AMI
        - !Ref 'AWS::Region'
        - !FindInMap 
          - AWSInstanceType2Arch
          - !Ref InstanceType
          - Arch
  InstanceSecurityGroup:
    Type: 'AWS::EC2::SecurityGroup'
    Properties:
      GroupDescription: Enable SSH access
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: '22'
          ToPort: '22'
          CidrIp: !Ref SSHLocation
  IPAddress:
    Type: 'AWS::EC2::EIP'
  IPAssoc:
    Type: 'AWS::EC2::EIPAssociation'
    Properties:
      InstanceId: !Ref EC2Instance
      EIP: !Ref IPAddress
Outputs:
  InstanceId:
    Description: InstanceId of the newly created EC2 instance
    Value: !Ref EC2Instance
  InstanceIPAddress:
    Description: IP address of the newly created EC2 instance
    Value: !Ref IPAddress

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