Kubernetes Tutorial for Beginners

Full Kubernetes Tutorial | Kubernetes Course | Hands-on course with a lot of demos

Kubernetes COURSE OVERVIEW

What is Kubernetes 

► What problems does Kubernetes solve?

► What features do container orchestration tools offer?

Main K8s Components

► Node & Pod

► Service & Ingress

► ConfigMap & Secret

► Volumes

► Deployment & StatefulSet

K8s Architecture

► Worker Nodes

► Master Nodes

► Api Server

► Scheduler

► Controller Manager

► etcd – the cluster brain

Minikube and kubectl – Local Setup

► What is minikube?

► What is kubectl?

► install minikube and kubectl

► create and start a minikube cluster

🔗 Links: – Install Minikube (Mac, Linux and Windows): https://bit.ly/38bLcJy – Install Kubectl: https://bit.ly/32bSI2Z – Gitlab: If you are using Mac, you can follow along the commands. I listed them all here: https://bit.ly/3oZzuHY

Main Kubectl Commands – K8s CLI

► Get status of different components

► create a pod/deployment

► layers of abstraction

► change the pod/deployment

► debugging pods

► delete pod/deployment

► CRUD by applying configuration file

🔗 Links: – Git repo link of all the commands: https://bit.ly/3oZzuHY

K8s YAML Configuration File

► 3 parts of a Kubernetes config file (metadata, specification, status)

► format of configuration file

► blueprint for pods (template)

► connecting services to deployments and pods (label & selector & port)

► demo

🔗 Links: – Git repo link: https://bit.ly/2JBVyIk

Demo Project

► Deploying MongoDB and Mongo Express

► MongoDB Pod

► Secret

► MongoDB Internal Service

► Deployment Service and Config Map

► Mongo Express External Service

🔗 Links: – Git repo link: https://bit.ly/3jY6lJp

Organizing your components with K8s Namespaces

► What is a Namespace?

► 4 Default Namespaces

► Create a Namespace

► Why to use Namespaces? 4 Use Cases

► Characteristics of Namespaces

► Create Components in Namespaces

► Change Active Namespace

🔗 Links: – Install Kubectx: https://github.com/ahmetb/kubectx#ins…

K8s Ingress explained

► What is Ingress? External Service vs. Ingress

► Example YAML Config Files for External Service and Ingress

► Internal Service Configuration for Ingress

► How to configure Ingress in your cluster?

► What is Ingress Controller?

► Environment on which your cluster is running (Cloud provider or bare metal)

► Demo: Configure Ingress in Minikube

► Ingress Default Backend

► Routing Use Cases

► Configuring TLS Certificate

🔗 Links: – Git Repo:

https://bit.ly/3mJHVFc

– Ingress Controllers:

https://bit.ly/32dfHe3

– Ingress Controller Bare Metal: https://bit.ly/3kYdmLB He

lm – Package Manager

► Package Manager and Helm Charts

► Templating Engine

► Use Cases for Helm

► Helm Chart Structure

► Values injection into template files

► Release Management / Tiller (Helm Version 2!)

🔗 Links: – Helm hub: https://hub.helm.sh/ – Helm charts GitHub Project: https://github.com/helm/charts

– Install Helm:

https://helm.sh/docs/intro/install/

Persisting Data in K8s with Volumes

► The need for persistent storage & storage requirements

► Persistent Volume (PV)

► Local vs Remote Volume Types

► Who creates the PV and when?

► Persistent Volume Claim (PVC)

► Levels of volume abstractions

► ConfigMap and Secret as volume types

► Storage Class (SC)

🔗 Links:

– Git Repo: https://bit.ly/2Gv3eLi

Deploying Stateful Apps with StatefulSet

►What is StatefulSet? Difference of stateless and stateful applications

► Deployment of stateful and stateless apps

► Deployment vs StatefulSet

► Pod Identity

► Scaling database applications: Master and Worker Pods

► Pod state, Pod Identifier

► 2 Pod endpoints

K8s Services

► What is a Service in K8s and when we need it?

► ClusterIP Services

► Service Communication

► Multi-Port Services

► Headless Services

► NodePort Services

► LoadBalancer Services

KUBERNETES TUTORIAL T I M E S T A M P S

0:00 – Course Overview

2:18 – What is K8s

5:20 – Main K8s Components

22:29 – K8s Architecture

34:47 – Minikube and kubectl – Local Setup

44:52 – Main Kubectl Commands – K8s CLI

1:02:03 – K8s YAML Configuration File

1:16:16 – Demo Project: MongoDB and MongoExpress

1:46:16 – Organizing your components with K8s Namespaces

2:01:52 – K8s Ingress explained

2:24:17 – Helm – Package Manager

2:38:07 – Persisting Data in K8s with Volumes

2:58:38 – Deploying Stateful Apps with StatefulSet

3:13:43 – K8s Services explained