cloudFormation/serverScript.yml at main · olufunbi/cloudFormation · GitHub

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Description: >
    Olufunbi Babalola / Server Script 2022

Parameters:

    EnvironmentName:
        Description: An environment name that will be prefixed to resource names
        Type: String

Resources:

  LBSecGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Allow http to our load balancer
      VpcId:
        Fn::ImportValue:
          !Sub "${EnvironmentName}-VPCID"
      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

  WebServerSecGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Allow http to our hosts and SSH from local only
      VpcId:
        Fn::ImportValue:
          !Sub "${EnvironmentName}-VPCID"
      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
      SecurityGroupEgress:
      - IpProtocol: tcp
        FromPort: 0
        ToPort: 65535
        CidrIp: 0.0.0.0/0

  WebAppLaunchConfig:
    Type: AWS::AutoScaling::LaunchConfiguration
    Properties:
      UserData:
        Fn::Base64: !Sub |
          #!/bin/bash
          sudo apt-get update -y
          sudo apt-get install apache2 -y
          sudo systemctl start apache2.service
          cd /var/www/html
          echo "Udacity Demo Web Server Up and Running!" > index.html
      ImageId: ami-0729e439b6769d6ab

      SecurityGroups:
      - Ref: WebServerSecGroup
      InstanceType: t3.medium
      BlockDeviceMappings:
      - DeviceName: "/dev/sda1"
        Ebs:
          VolumeSize: '15'

  WebAppGroup:
    Type: AWS::AutoScaling::AutoScalingGroup
    Properties:
      VPCZoneIdentifier:
      - Fn::ImportValue:
          !Sub "${EnvironmentName}-PRIV-NETS"
      LaunchConfigurationName:
        Ref: WebAppLaunchConfig
      MinSize: '4'
      MaxSize: '4'
      TargetGroupARNs:
      - Ref: WebAppTargetGroup

  WebAppLB:
    Type: AWS::ElasticLoadBalancingV2::LoadBalancer
    Properties:
      Subnets:
      - Fn::ImportValue: !Sub "${EnvironmentName}-PUB1-SN"
      - Fn::ImportValue: !Sub "${EnvironmentName}-PUB2-SN"
      SecurityGroups:
      - Ref: LBSecGroup

  Listener:
    Type: AWS::ElasticLoadBalancingV2::Listener
    Properties:
      DefaultActions:
      - Type: forward
        TargetGroupArn:
          Ref: WebAppTargetGroup
      LoadBalancerArn:
        Ref: WebAppLB
      Port: '80'
      Protocol: HTTP

  ALBListenerRule:
    Type: AWS::ElasticLoadBalancingV2::ListenerRule
    Properties:
      Actions:
      - Type: forward
        TargetGroupArn: !Ref 'WebAppTargetGroup'
      Conditions:
      - Field: path-pattern
        Values: [/]
      ListenerArn: !Ref 'Listener'
      Priority: 1

  WebAppTargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      HealthCheckIntervalSeconds: 10
      HealthCheckPath: /
      HealthCheckProtocol: HTTP
      HealthCheckTimeoutSeconds: 8
      HealthyThresholdCount: 2
      Port: 80
      Protocol: HTTP
      UnhealthyThresholdCount: 5
      VpcId:
        Fn::ImportValue:
          Fn::Sub: "${EnvironmentName}-VPCID"

Outputs:

  CreatedLoadBalancer:
    Description: Output reference for the ALBListenerRule
    Value: !Ref WebAppLB
    Export:
      Name: !Sub ${EnvironmentName}-ALB

  LoadBalancerURL:
    Description: URL of the Load balancer that includes http
    Value: !Join [ "", [ "http://", !GetAtt WebAppLB.DNSName ] ]
    Export:
      Name: !Sub ${EnvironmentName}-ALB-URL