aws-cloudformation-iac's Introduction

AWS-CloudFormation-IaC

Automated (& programmatic) deployment of an EC2 instance with Security Groups and Web Server via CloudFormation stack - utilizing Infrastructure as Code.

Description

All commands were executed through the Cloud9 CLI to

Create an S3 bucket
Bash commands in update.sh used for copying the .yaml file to the bucket and creating the CloudFormation stack
template.yaml holds IaC template for the EC2 instance

Infrastructure as Code

Detailed infrastructure template found in template.yaml:

AWSTemplateFormatVersion: 2010-09-09
Description: >- 
    Infrastructure for EC2 Instance
Parameters: 
    ImageId:
        Description: AMI to use eg. ami-047a51fa27710816e
        Default: ami-047a51fa27710816e
        Type: String
    VpcId: 
        Description: The VPC used by the SG
        Type: String
Resources: 
    WebServer:
        Type: AWS::EC2::Instance
        Properties:
            InstanceType: t2.micro
            ImageId: !Ref ImageId
            SecurityGroupIds:
                !GetAtt SecurityGroup.GroupId
            UserData:
                'Fn::Base64':
                    !Sub |
                        #!/usr/bin/env bash
                        yum -y update
                        su ec2-user
                        sudo yum install httpd -y
                        sudo service httpd start
                        sudo service httpd enable
    SecurityGroup:
        Type: AWS::EC2::SecurityGroup
        Properties: 
            VpcId: !Ref VpcId
            GroupDescription: 'Open port 80'
            SecurityGroupIngress:
                -   IpProtocol: tcp
                    FromPort: 80
                    ToPort: 80
                    CidrIp: "0.0.0.0/0"
Outputs:
    PublicIp:
        Value: !GetAtt WebServer.PublicIp