Infrastructure as Code with CloudFormation and Pulumi
Infrastructure as Code (IaC) is the practice of defining and managing infrastructure resources through machine-readable files.
CloudFormation and Pulumi are two popular IaC tools used for infrastructure deployment and management in AWS.
CloudFormation
CloudFormation is a service provided by AWS that allows you to define your infrastructure resources using YAML or JSON templates. These templates can be version-controlled, reused, and shared across teams.
With CloudFormation, you can:
- Provision and configure AWS resources
- Define dependencies between resources
- Manage the entire lifecycle of your infrastructure stack
Here's an example of a CloudFormation template that creates a VPC and an EC2 instance:
SNIPPET
1Resources:
2 VPC:
3 Type: AWS::EC2::VPC
4 Properties:
5 CidrBlock: 10.0.0.0/16
6 EnableDnsSupport: true
7 EnableDnsHostnames: true
8 Instance:
9 Type: AWS::EC2::Instance
10 Properties:
11 ImageId: ami-0c94855ba95c71c99
12 InstanceType: t2.micro
13 KeyName: my-key-pair
14 SubnetId: !Ref VPCxxxxxxxxxx26
import software.amazon.awscdk.core.*;import software.amazon.awscdk.services.ec2.*;public class Main { public static void main(String[] args) { // Define the stack Stack stack = new Stack(); // Create a VPC Vpc vpc = Vpc.Builder.create(stack, "VPC") .cidr("10.0.0.0/16") .maxAzs(2) .natGateways(1) .build(); // Create an EC2 instance Instance instance = Instance.Builder.create(stack, "Instance") .vpc(vpc) .instanceType(InstanceType.of(InstanceClass.BURSTABLE2, InstanceSize.MICRO)) .machineImage(MachineImage.latestAmazonLinux()) .build(); // Output the instance ID System.out.println("EC2 instance ID: " + instance.getInstanceId()); }}OUTPUT
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