MY_EC2_template

Parameters:
  KeyName:
    Description: Name of an existing EC2 KeyPair to enable SSH access to the instances. Linked to AWS Parameter
    Type: AWS::EC2::KeyPair::KeyName
    ConstraintDescription: must be the name of an existing EC2 KeyPair.
Resources:
  Webserver01:
    Type: 'AWS::EC2::Instance'
    Properties:
      AvailabilityZone: ap-southeast-1a
      ImageId: ami-043afc2b8b6cfba5c
      InstanceType: t2.micro
      SecurityGroups:
        - !Ref WebSecurityGroup
      KeyName: !Ref KeyName
  Webserver02:
    Type: 'AWS::EC2::Instance'
    Properties:
      AvailabilityZone: ap-southeast-1b
      ImageId: ami-043afc2b8b6cfba5c
      InstanceType: t2.micro
  WebSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Enable SSH access and HTTP access via port 22 & 80 resp
      GroupName: WebSGTest
      SecurityGroupIngress:
        - CidrIp: 0.0.0.0/0
          FromPort: 22
          IpProtocol: tcp
          ToPort: 22
        - CidrIp: 0.0.0.0/0
          FromPort: 80
          IpProtocol: tcp
          ToPort: 80