elb.yaml

AWSTemplateFormatVersion: 2010-09-09
Description: Hands-on template for ALB
#------------------------------------------------------
#  AWS CLIの実行の仕方
#  aws cloudformation create-stack --stack-name handson-cfn-elb --template-body file://elb.yml
#------------------------------------------------------

# スタック名
# handson-cfn-elb

Parameters:
  VPCStack:
    Type: String
    Default: handson-cfn
  EC2Stack:
    Type: String
    Default: handson-cfn-ec2

#------------------------------------------------------
#  ELB
#------------------------------------------------------

Resources:
  FrontLB:
    Type: AWS::ElasticLoadBalancingV2::LoadBalancer
    Properties:
      Name: !Ref AWS::StackName
      Subnets:
        - Fn::ImportValue: !Sub ${VPCStack}-PublicSubnet1
        - Fn::ImportValue: !Sub ${VPCStack}-PublicSubnet2
      SecurityGroups: 
        - !Ref SecurityGroupLB

  FrontLBListener:
    Type: AWS::ElasticLoadBalancingV2::Listener
    Properties:
      LoadBalancerArn: !Ref FrontLB
      Port: 80
      Protocol: HTTP 
      DefaultActions: 
        - Type: forward
          TargetGroupArn: !Ref FrontLBTargetGroup

  FrontLBTargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      Name: !Sub ${AWS::StackName}-tg
      VpcId:
        Fn::ImportValue: !Sub ${VPCStack}-VPCID
      Port: 80
      Protocol: HTTP
      HealthCheckPath: /.check_alive
      Targets:
        - Id:
            Fn::ImportValue: !Sub ${EC2Stack}-EC2WebServer01

  SecurityGroupLB:
    Type: AWS::EC2::SecurityGroup
    Properties: 
      GroupDescription: !Ref AWS::StackName
      VpcId:
        Fn::ImportValue: !Sub ${VPCStack}-VPCID
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: 0.0.0.0/0
#------------------------------------------------------
#  Outputsセクション
#------------------------------------------------------
Outputs:
  FrontLBEndpoint:
    Value: !GetAtt FrontLB.DNSName
    Export:
      Name: !Sub ${AWS::StackName}-Endpoint