master-stack.yml

AWSTemplateFormatVersion: 2010-09-09
Description: >-
  Cluster Master Stack
Parameters:
  Version:
    Type: String
    Default: "0.0.1"
    Description: Version of the application
  Environment:
    Type: String
    Default: dev
    Description: Select the appropriate environment
    AllowedValues:
      - dev
      - staging
      - prod
  S3CfnBucketName:
    Type: String
    Description: S3Bucket Path where the templates are stored
    Default: aws-cloudformation-templates
  Ec2KeyName:
    Type: String
    Description: EC2 Key Name
  Ec2AmiId:
    Type: String
    Description: EC2 AMI ID

Resources:
  VPCStack:
    Type: "AWS::CloudFormation::Stack"
    Properties:
      TemplateURL: !Sub "https://s3.amazonaws.com/${S3CfnBucketName}-${Environment}-${AWS::Region}/templates/vpc-stack.yml"
      Parameters:
        Version: !Ref Version
        Environment: !Ref Environment
        AvZone1: !Sub "${AWS::Region}a"
        AvZone2: !Sub "${AWS::Region}b"
        NetworkAclStackTemplateURL: !Sub "https://s3.amazonaws.com/${S3CfnBucketName}-${Environment}-${AWS::Region}/templates/network-acl-stack.yml"
      Tags:
        - Key: Name
          Value: VPCStack
        - Key: Version
          Value: !Ref Version
        - Key: Environment
          Value: !Ref Environment

  InstanceSecurityGroupStack:
    DependsOn:
      - VPCStack
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub "https://s3.amazonaws.com/${S3CfnBucketName}-${Environment}-${AWS::Region}/templates/instance-security-group-stack.yml"
      Parameters:
        Environment:
          Ref: Environment
        VpcCIDR: !GetAtt VPCStack.Outputs.VpcCIDR
        VPC: !GetAtt VPCStack.Outputs.VPC
      TimeoutInMinutes: '15'
      Tags:
        - Key: Name
          Value: InstanceSecurityGroupStack
        - Key: Version
          Value: !Ref Version
        - Key: Environment
          Value: !Ref Environment

  Ec2InstancesStack:
    DependsOn:
      - VPCStack
      - InstanceSecurityGroupStack
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub "https://s3.amazonaws.com/${S3CfnBucketName}-${Environment}-${AWS::Region}/templates/ec2-instances-stack.yml"
      Parameters:
        Environment:
          Ref: Environment
        KeyName:
          Ref: Ec2KeyName
        BaseImage:
          Ref: Ec2AmiId
        PrivateSubnet1Id: !GetAtt VPCStack.Outputs.PrivateSubnetAZ1
        PrivateSubnet2Id: !GetAtt VPCStack.Outputs.PrivateSubnetAZ2
        PublicSubnetId: !GetAtt VPCStack.Outputs.PublicSubnetAZ1
        PrivateInstanceSG: !GetAtt InstanceSecurityGroupStack.Outputs.PrivInstSecurityGroup
        PublicInstanceSG: !GetAtt InstanceSecurityGroupStack.Outputs.PubInstSecurityGroup
        ClusterInstanceType: t3.medium
        S3CfnBucketName: !Sub "${S3CfnBucketName}-${Environment}-${AWS::Region}"
      TimeoutInMinutes: '15'
      Tags:
        - Key: Name
          Value: Ec2InstancesStack
        - Key: Version
          Value: !Ref Version
        - Key: Environment
          Value: !Ref Environment