parameters.yml

Parameters:
  NameOfservice:
    Description: "The name of the service this to be used for ."
  InstanceTypeParameter:
    Type: String
    Default: t2.micro
    AllowedValues:
      - t2.micro
      - m1.small
      - m1.large
   Description: Enter t2.micro, m1.small, or m1.large. Default is t2.micro.
keyname:
  description: Name of EC2 Login Key 
  Types: AWS::EC2::Keypair::Keyname
Mappings: 
  RegionMap: 
    us-east-1: 
      "AMI": "ami-0ff8a91507f77f867"
    us-west-1: 
      "AMI": "ami-0bdb828fd58c52235"
    eu-west-1: 
      "AMI": "ami-047bb4163c506cd98"
    ap-southeast-1: 
      "AMI": "ami-08569b978cc4dfa10"
    ap-northeast-1: 
      "AMI": "ami-06cd52961ce9f0d85"
Resources :
  MyInstnce:
     Type: AWS::EC2::Instance
      Properties:
      InstnceType: !Ref InstanceTypeParmeter
      Keyname: !Ref keyName
       ImageId: !findInMap
       Tags:
      - key: "Name"
       Value: !Ref  NameOfservice
    SecurityGroup:
       - !Ref VprofileSG   

VprofilesG: 
   Type: AWS::EC2::SecurityGroup
  Properties:
    GroupDescription: Allow http to client host
    VpcId: Ref: myVPC
    SecurityGroupIngress:
      - IpProtocol: tcp
        FromPort: 80
        ToPort: 80
        CidrIp: 0.0.0.0/0
    SecurityGroupEgress:
      - IpProtocol: tcp
        FromPort: 80
        ToPort: 80
        CidrIp: 0.0.0.0/0