What is Kubernetes?

1. Introduction

Kubernetes, often abbreviated as K8s, is an open-source platform designed to automate deploying, scaling, and operating application containers.

It provides a container-centric management environment, enabling developers to manage containerized applications more efficiently.

2. Key Concepts

3. Architecture

Kubernetes has a master-worker architecture.

        graph LR
            A[Master Node] --> B[API Server]
            A --> C[Controller Manager]
            A --> D[Scheduler]
            B --> |REST API| E[Worker Node]
            C --> |Controller| E
            D --> |Schedule Pods| E
            E --> F[Pods]
            E --> G[Services]
            E --> H[Deployments]
    

4. Installation

To set up a Kubernetes cluster locally, you can use tools like Minikube. Here is a basic installation process:

        # Install Minikube
        curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
        sudo install minikube-linux-amd64 /usr/local/bin/minikube

        # Start Minikube
        minikube start
        

5. Best Practices

• Use labels for organization and selection of resources.
• Implement health checks for your applications.
• Set resource limits and requests for each container.
• Regularly update your Kubernetes version.
• Use namespaces for environment separation.

6. FAQ