AWSTemplateFormatVersion: '2010-09-09'
Description: This template sets up a VPC and ec2 instance for the purposes of demonstrating connecting to instances in private subnets using Session Manager. (qs-1pqnhbcg8)
Parameters:
  LatestAmiId:
    Type: 'AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>'
    Default: '/aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2'
  AvailabilityZones:
    Description: List of Availability Zones to use for the subnets in the VPC. Only
      two Availability Zones are used for this deployment, and the logical order of
      your selections is preserved.
    Type: List<AWS::EC2::AvailabilityZone::Name>
  KeyPairName:
    Description: Name of an existing public/private key pair, which allows you
      to securely connect to your instance after it launches.
    Type: AWS::EC2::KeyPair::KeyName
  PrivateSubnet1CIDR:
    AllowedPattern: ^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/(1[6-9]|2[0-8]))$
    ConstraintDescription: CIDR block parameter must be in the form x.x.x.x/16-28
    Default: 10.0.0.0/19
    Description: CIDR block for private subnet 1 located in Availability Zone 1.
    Type: String
  PrivateSubnet2CIDR:
    AllowedPattern: ^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/(1[6-9]|2[0-8]))$
    ConstraintDescription: CIDR block parameter must be in the form x.x.x.x/16-28
    Default: 10.0.32.0/19
    Description: CIDR block for private subnet 2 located in Availability Zone 2.
    Type: String
  PublicSubnet1CIDR:
    AllowedPattern: ^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/(1[6-9]|2[0-8]))$
    ConstraintDescription: CIDR block parameter must be in the form x.x.x.x/16-28
    Default: 10.0.128.0/20
    Description: CIDR block for the public (DMZ) subnet 1 located in Availability
      Zone 1.
    Type: String
  PublicSubnet2CIDR:
    AllowedPattern: ^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/(1[6-9]|2[0-8]))$
    ConstraintDescription: CIDR block parameter must be in the form x.x.x.x/16-28
    Default: 10.0.144.0/20
    Description: CIDR block for the public (DMZ) subnet 2 located in Availability
      Zone 2.
    Type: String
  VPCCIDR:
    AllowedPattern: ^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/(1[6-9]|2[0-8]))$
    ConstraintDescription: CIDR block parameter must be in the form x.x.x.x/16-28
    Default: 10.0.0.0/16
    Description: CIDR block for the VPC.
    Type: String
Resources:
  EC2SSMRole:
    Type: "AWS::IAM::Role"
    Properties:
      AssumeRolePolicyDocument:
        Version: "2012-10-17"
        Statement:
          - Effect: "Allow"
            Principal:
              Service: ["ec2.amazonaws.com"]
            Action: "sts:AssumeRole"
      Path: "/"
      ManagedPolicyArns:
        - 'arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore'
        - 'arn:aws:iam::aws:policy/CloudWatchAgentServerPolicy'
  EC2InstanceProfile:
    Type: AWS::IAM::InstanceProfile
    Properties:
      Path: '/'
      Roles:
        - !Ref EC2SSMRole
  VPCStack:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL:
        Fn::Sub: https://aws-quickstart.s3.amazonaws.com/quickstart-aws-vpc/templates/aws-vpc.template.yaml
      Parameters:
        AvailabilityZones:
          Fn::Join:
            - ','
            - Ref: AvailabilityZones
        NumberOfAZs: '2'
        PrivateSubnet1ACIDR:
          Ref: PrivateSubnet1CIDR
        PrivateSubnet2ACIDR:
          Ref: PrivateSubnet2CIDR
        PublicSubnet1CIDR:
          Ref: PublicSubnet1CIDR
        PublicSubnet2CIDR:
          Ref: PublicSubnet2CIDR
        VPCCIDR:
          Ref: VPCCIDR
  MyEC2Instance:
    Type: AWS::EC2::Instance
    Properties:
      ImageId: !Ref LatestAmiId
      InstanceType: "t3.micro"
      IamInstanceProfile: !Ref EC2InstanceProfile
      KeyName: !Ref KeyPairName
      SubnetId:
        Fn::GetAtt:
          - VPCStack
          - Outputs.PrivateSubnet1AID
      Tags:
        -
          Key: Name
          Value: SSM-SSH-Demo
      UserData:
        Fn::Base64:
          !Sub |
            #!/bin/bash
            sudo yum install -y https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_amd64/amazon-ssm-agent.rpm
Outputs:
  MyEC2Instance:
    Description: The instance ID of the demo instance.
    Value: !Ref MyEC2Instance