CloudFormation

template4.yml

Resources:
  Ec2Instance:
    Type: AWS::EC2::Instance
    Properties:
      InstanceType: t2.micro
      ImageId: ami-0947d2ba12ee1ff75 # Amazon Linux AMI in us-east-1
      KeyName: ec2-instances
      Tags:
        - Key: Name
          Value: My EC2 Instance
        - Key: Owner
          Value: Ali
      UserData:
        Fn::Base64: !Sub |
          #!/bin/bash
          yum update -y # update existing packages
          yum install -y httpd # install apache web server
          systemctl start httpd
          systemctl enable httpd
          echo "Hello World" > /var/www/html/index.html