Setting Up Docker Swarm on AWS: A Step-by-Step Guide

Setting Up Docker Swarm on AWS: A Step-by-Step Guide

Day 83 & 84: Docker Swarm


Docker Swarm is a robust orchestration tool that simplifies the management and scaling of Dockerized applications. In this tutorial, we'll walk you through setting up a Docker Swarm on AWS using three EC2 instances—one serving as the Swarm Manager and the other two as Swarm Nodes. We'll also deploy a simple Django app within the Swarm, ensuring you have a scalable and efficient setup.


Before we begin, make sure you have:

  • An AWS account with access to EC2 instances.

  • SSH access to your instances.

  • Basic knowledge of Docker.

Step 1: Launch EC2 Instances

Create Three EC2 Instances:

  • Use the AWS Management Console to create three EC2 instances.
  • Designate one instance as the Swarm Manager and the other two as Swarm Nodes.
  • Ensure the security groups are configured to allow traffic on ports 2377 (for Swarm management) and 8001 (for the Django app).

Step 2: Install Docker Engine

  1. Connect to Each EC2 Instance via SSH

  2. Install Docker Engine by Running the Following Commands:

# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install -y ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# Add the repository to Apt sources:
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update

# Install the Docker packages
sudo apt-get install -y docker-ce docker-ce-cli docker-buildx-plugin docker-compose-plugin

Step 3: Initialize Docker Swarm

  1. On the Swarm Manager:
sudo docker swarm init
  1. On Both Swarm Nodes:

    Copy the generated command with the token from the Swarm Manager and run it on both Swarm Nodes to join them to the Swarm as workers.

Step 4: Verify Swarm Nodes

List All Nodes in the Swarm to Ensure Successful Joining:

sudo docker node ls

Step 5: Deploy a Docker Service

Create a Docker Service on the Swarm Manager:

sudo docker service create --name django-app-service --replicas 3 --publish 8001:8001 trainwithshubham/react-django-app:latest

This command deploys a Django app with three replicas and exposes port 8001.

Step 6: Check Service Status

Verify the Service Deployment:

sudo docker service ls

Step 7: Verify Containers

Check That the Containers Are Running on the Swarm Manager:

sudo docker ps

Step 8: Access the Django App

Access the Django App Using the IP Address of Any Node:



Congratulations! You have successfully set up a Docker Swarm on AWS with a Django app running in a distributed environment. This tutorial provides a solid foundation for deploying and managing scalable applications using Docker Swarm. Feel free to explore additional Docker Swarm features and customize the deployment according to your application's requirements.

Happy Learning!

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