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How to create Load balancer with EC2 instances as targets with cloudFormation Template.

Onchari Johannes answered on July 8, 2022 Popularity 3/10 Helpfulness 1/10

answer How to create Load balancer with EC2 instances as targets with cloudFormation Template.

How to create Load balancer with EC2 instances as targets with cloudFormation Template.

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---
Parameters:
  SecurityGroupDescription:
    Description: Security Group Description
    Type: String
  KeyName:
    Description: Key Pair for EC2
    Type: 'AWS::EC2::KeyPair::KeyName'

Resources:
  EC2Instance1:
    Type: AWS::EC2::Instance
    Properties:
      AvailabilityZone: us-east-2a
      ImageId: ami-0233c2d874b811deb 
      InstanceType: t2.micro
      SecurityGroups:
        - !Ref EC2SecurityGroup
      KeyName: !Ref KeyName
      UserData: 
        Fn::Base64: !Sub |
          #!/bin/bash
          yum update -y
          yum install -y httpd
          systemctl start httpd
          systemctl enable httpd
          #echo "<h1>Hello from Region us-east-2a</h1>" > /var/www/html/index.html

  EC2Instance2:
    Type: AWS::EC2::Instance
    Properties:
      AvailabilityZone: us-east-2b
      ImageId: ami-0233c2d874b811deb 
      InstanceType: t2.micro
      SecurityGroups:
        - !Ref EC2SecurityGroup
      KeyName: !Ref KeyName
      UserData: 
        Fn::Base64: !Sub |
          #!/bin/bash
          yum update -y
          yum install -y httpd
          systemctl start httpd
          systemctl enable httpd
          #echo "<h1>Hello from Region us-east-2b</h1>" > /var/www/html/index.html
          
  # security group
  ELBSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: ELB Security Group
      SecurityGroupIngress:
      - IpProtocol: tcp
        FromPort: 80
        ToPort: 80
        CidrIp: 0.0.0.0/0

  EC2SecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: !Ref SecurityGroupDescription
      SecurityGroupIngress:
      - IpProtocol: tcp
        FromPort: 80
        ToPort: 80
        SourceSecurityGroupId: 
          Fn::GetAtt:
          - ELBSecurityGroup
          - GroupId
      - IpProtocol: tcp
        FromPort: 22
        ToPort: 22
        CidrIp: 0.0.0.0/0

  # Load Balancer for EC2
  LoadBalancerforEC2:
    Type: AWS::ElasticLoadBalancing::LoadBalancer
    Properties:
      AvailabilityZones: [us-east-2a, us-east-2b]
      Instances:
      - !Ref EC2Instance1
      - !Ref EC2Instance2
      Listeners:
      - LoadBalancerPort: '80'
        InstancePort: '80'
        Protocol: HTTP
      HealthCheck:
        Target: HTTP:80/
        HealthyThreshold: '3'
        UnhealthyThreshold: '5'
        Interval: '30'
        Timeout: '5'
      SecurityGroups:
        - !GetAtt ELBSecurityGroup.GroupId

Popularity 3/10 Helpfulness 1/10 Language whatever

Source: dev.classmethod.jp

Tags: instances load stack targets whatever

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Contributed on Jul 08 2022

Onchari Johannes

0 Answers Avg Quality 2/10

How to create Load balancer with EC2 instances as targets with cloudFormation Template.

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