DevOps Classroom notes 17/Jun/2026

Kubernetes (k8s) installation options

• Broadly k8s installation is of two types
  • single node: This for developer purposes
    • kind
    • minikube
  • multi node: This if for production

Multi-node options

• Here we have two broader options
  • Are the nodes maintained by you: Here we install k8s cluster
    • you can use physical servers or virtual machines
  • Get the nodes when required: Here we get k8s cluster and will pay bills for using.
    • Use kubernetes as a service:
      • Azure Kubernetes Services (AKS)
      • AWS Elastic Kuberenetes Services (EKS)
      • Google Kubernetes Engine (GKE)

K8s installation options

• IN k8s we have
  • master node:
    • This has to be a linux machine
  • node:
    • This can be any os (linux, windows)
• Installing k8s also has multiple ways

You are an expert in kuberentes

I'm a beginner. 
Give me the possible options of installing k8s cluster on 3 nodes.

Give me options for 
  * learning
  * dev environments
  * production environments

Ensure you dont give Kubernetes as a Service options

Lab-Experiment

• Lets install k8s on 2 – node
  • node-1 => master
  • node-2 => worker
• Overview
  
• We have two choices to make
  • CRI
  • CNI
• Setting up kubeadm Refer Here
• Create two vms in Azure (you can use other cloud)
• Login into both machines and install docker
• Now install CRI-dockerd

Give me steps to install CRI-dockerd on the ubuntu 24.04 LTS where docker is already installed and i need CRI-dockerd to work with kubeadm 1.36

• Before initializing kubeadm init, lets choose the command based on CNI

You are expert in kuberenetes

Give me a begineer friendly CNI for my two-node kubernetes cluster 1.36 with two ubuntu 24.04 installed using kubeadm and CRI-dockerd.

Give me installation steps from initializing the kubeadm to CNI installation