Kubernetes Cluster Setup Scripts

This repository contains shell scripts to set up a Kubernetes cluster using CRI-O as the container runtime on Ubuntu 22.04. The scripts are designed for both master and node setup.

Scripts

1. master.sh

This script sets up a Kubernetes master node.

Features:

• Configures required kernel modules
• Installs CRI-O container runtime
• Installs Kubernetes components (kubelet, kubectl, kubeadm)
• Initializes the Kubernetes cluster
• Sets up Calico as the network plugin

Usage:

chmod +x master.sh
./master.sh

2. node.sh

This script sets up a Kubernetes worker node.

Features:

• Configures required kernel modules
• Installs CRI-O container runtime
• Installs Kubernetes components (kubelet, kubectl, kubeadm)

Usage:

chmod +x node.sh
./node.sh

3. crio.sh

This script modifies the CRI-O configuration.

Features:

• Updates the conmon path in the CRI-O configuration file
• Adds Docker, Quay, and Fedora registries to the CRI-O configuration

Usage:

chmod +x crio.sh
./crio.sh

Prerequisites

• Ubuntu 22.04
• Root or sudo access

Steps to Set Up the Cluster

1. Clone this repository.
2. Master Node Setup: Run master.sh on the intended master node.
3. Worker Node Setup: Run node.sh on each intended worker node.
4. CRI-O Configuration: Run crio.sh on each node to configure CRI-O.

Acknowledgements

Special thanks to the following projects and communities that have contributed to this project:

• Kubernetes - Providing a robust container orchestration platform.
• CRI-O - Offering a lightweight container runtime tailored for Kubernetes.
• Calico - Delivering scalable networking solutions for Kubernetes environments.

License

This project is licensed under the MIT License - see the LICENSE file for details.