Simple cloudformation example

my-simple-cf-example

Parameters:
  ec2Name:
    Description: ec2 name
    Type: String
  availZone:
    Description: availability zone
    Type: AWS::EC2::AvailabilityZone::Name
  myKeyPair: 
    Description: Amazon EC2 Key Pair
    Type: "AWS::EC2::KeyPair::KeyName"

Outputs:
  ServerDnsName:
    Description: dns name
    Value: !GetAtt MyEc2Instance.PublicDnsName
  IpPublic:
    Description: public ip
    Value: !GetAtt MyEc2Instance.PublicIp

Resources:
  MyEc2Instance:
    Type: AWS::EC2::Instance
    Metadata: 
      AWS::CloudFormation::Init:
        config: 
          packages: 
            yum:
              httpd: []
              php: []
          files: 
            /var/www/html/index.php:
              content: !Sub |
                <?php print "Hello world!"; ?>
          services: 
            sysvinit:
              httpd:
                enabled: true
                ensureRunning: true
    Properties:
      AvailabilityZone: !Ref availZone
      InstanceType: t2.micro
      ImageId: ami-0fad7378adf284ce0
      KeyName: !Ref myKeyPair
      NetworkInterfaces: 
      - AssociatePublicIpAddress: "true"
        DeviceIndex: "0"
        GroupSet: 
        - !Ref MySecGroup
        SubnetId: !Ref MySubnet
      Tags:
        - Key: Name
          Value: !Ref ec2Name
      UserData:
        'Fn::Base64': 
          !Sub |
            #!/bin/bash -xe            
            # Ensure AWS CFN Bootstrap is the latest
            yum install -y aws-cfn-bootstrap
            # Install the files and packages from the metadata
            /opt/aws/bin/cfn-init -v --stack ${AWS::StackName} --resource EC2Instance  --region ${AWS::Region}
  MyEBSVolume:
    Type: AWS::EC2::Volume
    Properties:
      VolumeType: gp2
      AvailabilityZone: !Ref availZone
      Size: 20
  MyInternetGateway:
    Type: AWS::EC2::InternetGateway
  MyVPCGatewayAttachment:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties: 
      InternetGatewayId: !Ref MyInternetGateway
      VpcId: !Ref myVPC
  MyRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref myVPC
  MySubnetRouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref MySubnet
      RouteTableId: !Ref MyRouteTable
  MyMountPoint:
    Type: AWS::EC2::VolumeAttachment
    Properties:
      InstanceId: !Ref MyEc2Instance
      VolumeId: !Ref MyEBSVolume
      Device: /dev/sdh
  myRoute:
    Type: AWS::EC2::Route
    DependsOn: 
    - MyInternetGateway
    - MyVPCGatewayAttachment
    Properties:
      RouteTableId: !Ref MyRouteTable
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref MyInternetGateway
  myVPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: 10.0.0.0/16
      EnableDnsSupport: true
      EnableDnsHostnames: true
  MySecGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Allow ssh
      VpcId: !Ref myVPC
      SecurityGroupIngress:
      - IpProtocol : tcp
        FromPort : 80
        ToPort : 80
        CidrIp : 0.0.0.0/0
      - IpProtocol : tcp
        FromPort : 22
        ToPort : 22
        CidrIp : 0.0.0.0/0
  MySubnet:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone: !Ref availZone
      VpcId: !Ref myVPC
      CidrBlock: 10.0.2.0/24