Creating a Smartphone Cluster with Linux

In this article, we’ll explore how to create a parallel cluster or load balancer using multiple smartphones. This setup leverages Linux-based tools like Termux or UserLAnd to create a master-slave architecture similar to Kubernetes or Knoppix Clusters.

1. Introduction

A parallel cluster distributes computational tasks across multiple devices, improving performance and fault tolerance. By using smartphones, we can create a low-cost, portable cluster for educational or experimental purposes.

2. Tools and Technologies

• Termux: A terminal emulator and Linux environment for Android.
• UserLAnd: An app to run full Linux distributions on Android.
• SSH: For secure communication between devices.
• MPI: A standard for parallel computing.
• Docker (optional): For containerization.

3. Setting Up the Cluster

Step 1: Prepare the Smartphones

Install Termux or UserLAnd on all smartphones and set up a Linux environment (e.g., Ubuntu).

Step 2: Network Configuration

Connect all devices to the same Wi-Fi network and assign static IP addresses.

Step 3: Set Up SSH

Install OpenSSH on all devices and configure passwordless login using SSH keys.

Step 4: Install MPI

Install MPI on all devices and configure the hostfile with the IP addresses of the slave nodes.

Step 5: Test the Cluster

Run a simple MPI program to ensure all nodes can communicate and execute tasks.

Step 6: Load Balancing

Use HAProxy or Nginx to distribute tasks across the cluster.

Step 7: Automation and Management

Use scripts and Docker to automate cluster management tasks.

4. Conclusion

By following these steps, you can create a functional smartphone cluster using Linux-based tools. This setup is ideal for learning about parallel computing, load balancing, and cluster management.