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In this article, we will explore how to create a Virtual Private Cloud (VPC) with subnets using AWS CloudFormation. This hands-on lab is ideal for those interested in Infrastructure as Code (IaC), AWS networking, and cloud automation.
Key Tasks Completed:
1. Created a VPC with an Internet Gateway.
2. Deployed public and private subnets using CloudFormation.
3. Associated subnets with appropriate route tables.
- Updated the stack to add more subnets across multiple AZs.
You Should Know:
To get started, you need to have the AWS CLI installed and configured on your machine. Below are the steps and commands to create a VPC with subnets using AWS CloudFormation.
Step 1: Install and Configure AWS CLI
<h1>Install AWS CLI</h1> sudo apt-get update sudo apt-get install awscli <h1>Configure AWS CLI</h1> aws configure
You will be prompted to enter your AWS Access Key, Secret Key, region, and output format.
Step 2: Create a CloudFormation Template
Create a YAML file named `vpc_template.yaml` with the following content:
AWSTemplateFormatVersion: '2010-09-09' Resources: MyVPC: Type: 'AWS::EC2::VPC' Properties: CidrBlock: '10.0.0.0/16' EnableDnsSupport: true EnableDnsHostnames: true Tags: - Key: Name Value: MyVPC MyInternetGateway: Type: 'AWS::EC2::InternetGateway' Properties: Tags: - Key: Name Value: MyInternetGateway AttachGateway: Type: 'AWS::EC2::VPCGatewayAttachment' Properties: VpcId: !Ref MyVPC InternetGatewayId: !Ref MyInternetGateway PublicSubnet: Type: 'AWS::EC2::Subnet' Properties: VpcId: !Ref MyVPC CidrBlock: '10.0.1.0/24' AvailabilityZone: 'us-east-1a' MapPublicIpOnLaunch: true Tags: - Key: Name Value: PublicSubnet PrivateSubnet: Type: 'AWS::EC2::Subnet' Properties: VpcId: !Ref MyVPC CidrBlock: '10.0.2.0/24' AvailabilityZone: 'us-east-1b' Tags: - Key: Name Value: PrivateSubnet PublicRouteTable: Type: 'AWS::EC2::RouteTable' Properties: VpcId: !Ref MyVPC Tags: - Key: Name Value: PublicRouteTable PrivateRouteTable: Type: 'AWS::EC2::RouteTable' Properties: VpcId: !Ref MyVPC Tags: - Key: Name Value: PrivateRouteTable PublicRoute: Type: 'AWS::EC2::Route' Properties: RouteTableId: !Ref PublicRouteTable DestinationCidrBlock: '0.0.0.0/0' GatewayId: !Ref MyInternetGateway SubnetRouteTableAssociationPublic: Type: 'AWS::EC2::SubnetRouteTableAssociation' Properties: SubnetId: !Ref PublicSubnet RouteTableId: !Ref PublicRouteTable SubnetRouteTableAssociationPrivate: Type: 'AWS::EC2::SubnetRouteTableAssociation' Properties: SubnetId: !Ref PrivateSubnet RouteTableId: !Ref PrivateRouteTable
Step 3: Deploy the CloudFormation Stack
Use the following command to deploy the stack:
aws cloudformation create-stack --stack-name MyVPCStack --template-body file://vpc_template.yaml --capabilities CAPABILITY_NAMED_IAM
Step 4: Verify the Stack Creation
You can verify the stack creation using the following command:
aws cloudformation describe-stacks --stack-name MyVPCStack
Step 5: Update the Stack
To update the stack and add more subnets, modify the `vpc_template.yaml` file and use the following command:
aws cloudformation update-stack --stack-name MyVPCStack --template-body file://vpc_template.yaml --capabilities CAPABILITY_NAMED_IAM
What Undercode Say:
Creating a VPC with subnets using AWS CloudFormation is a powerful way to manage your cloud infrastructure as code. This approach not only automates the deployment process but also ensures consistency and repeatability. By mastering these skills, you can significantly enhance your cloud automation capabilities, making you a valuable asset in the DevOps and cloud engineering fields.
Expected Output:
- A fully functional VPC with public and private subnets.
- Properly configured route tables and internet gateway.
- Automated deployment and updates using AWS CloudFormation.
Useful URLs:
References:
Reported By: Omeatai Aws – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
