Build Your Own AI Assistant Part 1 - Creating the Assistant
116316 Views
Is the new Raspberry Pi AI Kit better than Google Coral?
111570 Views
Control Arduino with Python using Firmata / PyFirmata
86865 Views
How to Map with LiDAR - using a Raspberry Pi Zero 2W, RPLidar and Rviz
56603 Views
Creating a Supercomputer with a Raspberry Pi 5 Cluster and Docker Swarm!
52712 Views
Node-Red Automation, MQTT, NodeMCU & MicroPython
51798 Views
Weather Station Display
Pi 10 Inch Mini-rack
Installing and Using DeepSeek-R1:1.5 on a Raspberry Pi with Docker
Gamepad & BurgerBot
Level Up your CAD Skills
Operation Pico
Mini-Rack 3D Design Tutorial
0h 20m
Using the Raspberry Pi Pico's Built-in Temperature Sensor
0h 24m
Getting Started with SQL
0h 32m
Introduction to the Linux Command Line on Raspberry Pi OS
0h 42m
How to install MicroPython
0h 8m
Wall Drawing Robot Tutorial
0h 22m
Learn Linux from the basics to advanced topics.
Learn how to use a Raspberry Pi Pico
Learn MicroPython the best language for MicroControllers
Learn Docker, the leading containerization platform. Docker is used to build, ship, and run applications in a consistent and reliable manner, making it a popular choice for DevOps and cloud-native development.
Learn how to build SMARS robots, starting with the 3D Printing the model, Designing SMARS and Programming SMARS
Learn how to build robots, starting with the basics, then move on to learning Python and MicroPython for microcontrollers, finally learn how to make things with Fusion 360.
Learn Python, the most popular programming language in the world. Python is used in many different areas, including Web Development, Data Science, Machine Learning, Robotics and more.
Learn how to create robots in 3D, using Fusion 360 and FreeCAD. The models can be printed out using a 3d printer and then assembled into a physical robot.
Learn how to create Databases in Python, with SQLite3 and Redis.
KevsRobots Learning Platform
24% Percent Complete
By Kevin McAleer, 3 Minutes
With your Raspberry Pis prepared and running the cloned OS, the next step is to initialize Docker Swarm. Docker Swarm turns a group of Docker engines into a single, virtual Docker engine, where you can deploy and manage containers across multiple Raspberry Pi nodes seamlessly.
Docker Swarm is a container orchestration tool, part of Docker, that allows you to manage multiple Docker hosts as a single entity. It’s designed for ease of use and simplicity, making it an excellent choice for beginners and for use with Raspberry Pi clusters.
Run the Docker Swarm Init Command: Execute the following command:
docker swarm init --advertise-addr <MANAGER_IP>
Replace <MANAGER_IP> with the IP address of your manager Raspberry Pi. This IP should be static or reserved to prevent issues.
<MANAGER_IP>
Note the Join Token: Upon successful initialization, Docker will output a token that worker nodes will use to join the Swarm. It looks something like this:
docker swarm join --token SWMTKN-1-<token_string> <MANAGER_IP>:2377
Keep this token secure; you’ll need it to add worker nodes to your Swarm.
Check the Swarm’s Status: On the manager node, run:
docker node ls
This command lists all nodes in the Swarm, showing their roles (manager or worker) and statuses.
Promoting Nodes: You can promote worker nodes to manager status for redundancy using:
docker node promote <NODE_NAME>
Demoting Nodes: Similarly, managers can be demoted to workers with:
docker node demote <NODE_NAME>
Initializing Docker Swarm on your Raspberry Pi cluster is a pivotal step in creating a unified computing platform. With Swarm, you can deploy containers across multiple Pis, manage workload distribution, and ensure your applications are highly available. In the upcoming lessons, we’ll explore how to add applications and services to your newly formed Docker Swarm cluster.
< Previous Next >