Crossplane EC2 Provisioning

This project demonstrates how to provision EC2 instances on AWS using Crossplane.

Overview

The project consists of several components:

• CompositeResourceDefinition (CRD): Defines the custom resource EC2 that users can create to request EC2 instances with specific configurations.
• Composition: Describes how to compose the EC2 custom resource with the necessary patches to provision EC2 instances on AWS.
• Provider Configuration: Configures the AWS provider in Crossplane and sets up secrets for AWS credentials.
• Initialization Script: Bash script (init.sh) for installing Crossplane and the AWS provider, as well as setting up required configurations.
• Example EC2 Resource: An example EC2 custom resource (ec2-light.yaml) showcasing how to request an EC2 instance with default parameters.

Prerequisites

Before running the initialization script, ensure the following:

• File aws-credentials.txt is filled with the right AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY.
• KUBECONFIG environment variable is set.
• kubectl and helm are installed.

Getting Started

To set up Crossplane and provision EC2 instances on AWS, follow these steps:

1. Clone this repository.
2. Set the required environment variables.
3. Run the initialization script: ./init.sh.

Usage

Run the following command to install the CRD (CompositeResourceDefinition), and the composition:

kubectl apply -f CompositeResourceDefinitions/ec2_definition.yaml
kubectl apply -f Compositions/ec2_composition.yaml

Once the initialization is complete, you can create EC2 instances by applying the EC2 custom resource YAML files. For example:

apiVersion: omerap12.com/v1alpha1
kind: EC2
metadata:
  name: ec2-light # Resource name
  annotations:
    creator: crossplane
    author: omerap12
spec:
  compositionSelector:
    matchLabels:
      provider: aws
  parameters:
    ec2type: cheap # cheap/memory/cpu/gpu/storage optimized (default cheap)
    operatingSystem: linux # linux(AL),Windows, Ubuntu (default AL2)
    subnetId: xxx # Must specify subnet id 
    publicIp: false # true/false (deafult false)

A new instance will be created and be managed by crossplane.

Mapping

ec2type

• cheap: t2.micro
• memory: r5.large
• cpu: c5.large
• gpu: p3.xlarge
• storage: i3.large

operatingSystem

• linux: ami-0c101f26f147fa7fd
• windows: ami-03cd80cfebcbb4481
• ubuntu: ami-080e1f13689e07408