Docker Containers Deployment with AWS

Introduction

• Welcome and introduction to video.
• Aim: Show how to use AWS for deploying Docker containers in real-world applications, along with scaling, and orchestration.
• Milestone: 50,000 subscribers.

Video Structure

• Overview of processes to be covered:
  • Practical demonstration
  • Theoretical understanding of underlying concepts

Prerequisites

• Docker installed and knowledge of it (refer to previous videos).
• An AWS account is needed.

Basic Architecture Overview

• Goal: Deploy Docker containers using AWS and ECS.
• Process involves creating a Docker image and pushing it to a registry.
• Registry: A place where images are stored (e.g., GitHub for code, ECR for Docker images).
• ECR (Elastic Container Registry): Managed Docker container registry.
• ECS (Elastic Container Service): Used for managing and orchestrating Docker containers.

Steps to Deployment

1. Local Image Build
   • Build a Docker image for the application.
   • Push the image to ECR.
2. ECR Setup
   • Create a repository in ECR for your Docker image.
3. ECS Cluster Creation
   • Create an ECS cluster for managing the deployed application.
   • Can contain multiple services.
4. Task Definition
   • Define the task that specifies which Docker image to run.
5. Service Creation
   • Create a service that will run the task definition, allowing scaling.
   • Capacity Provider: Allows automatic scaling of tasks based on load.
6. Load Balancer Setup
   • Create an application load balancer to distribute traffic.
7. Rolling Updates
   • Manage deployments with minimal downtime using rolling updates for your code.
8. Health Checks
   • Configure health checks to ensure containers are running correctly.

Practical Implementation

• Show how to build a simple Express application using TypeScript and Docker.
• Details of the Dockerfile setup, multi-stage builds, and defining the ports and health checks.

Running & Testing the Container

• Run the container and test the endpoint in the browser.

ECR Commands

• Push Image to ECR: Steps to log into ECR and push the built Docker image.

Create ECS Cluster

• Steps to create a new ECS cluster and define services and tasks.

Service Auto-Scaling

• Steps to configure auto-scaling based on CPU utilization.
• Health check configurations and behaviors discussed.

Implementing Updates

• Explanation of how to perform updates seamlessly using ECS, with the focus on maintaining uptime using rolling updates.

Cleanup Procedures

• Instructions on how to clean up resources in AWS to avoid unnecessary charges.
• Steps to prevent unintentional billing by setting desired task counts to zero and deleting services and clusters.

Conclusion

• Wrap-up of deployment, scaling, and orchestration concepts.
• Encouragement to apply learned concepts and explore Docker with AWS service integration.