Full Kubernetes Course [FREE] 🎉

Kubernetes, also known as K8s, is an open source container orchestration platform that automates many of the manual processes involved when deploying and managing containerized applications.

Why we need Kubernetes? 🤔

After you have learnt Docker 🐳 you can start creating very complex applications with tens or even hundreds of containers, with containers talking to each other and interacting in some way.
And these containers would need to be deployed across multiple servers in a distributed way.
So you can imagine the overhead and effort you would have, if you had to manage these hundreds of containers manually without automation. 🤦‍♀️

Every time containers crash or the communication between them isn’t working across multiple servers, you would have to interfere and fix the problem.

So it would be great to have a tool that will automatically fix such issues and recover the application state. That tool is a container orchestration tool. ⭐️

And Kubernetes is one of the most popular container orchestration tools out there.

Getting started with Kubernetes 😎

In this course, we’ll go through K8s use cases, you will learn how K8s actually works and how you can use it by showcasing all the main components. In addition we will go through a practical use case, where we will deploy a simple application setup in K8s cluster locally to get your first hands-on experience 👩🏻‍💻 with K8s and feel more confident about the tool.

We will also go into more advanced and important concepts like organizing your components using Namespaces, how to make your App available from outside using K8s Ingress or how to persist data in K8s using Volumes.

The full course is available here: 🤓

▬▬▬▬▬▬ COURSE OVERVIEW 📚 ▬▬▬▬▬▬

🔥 1. Introduction to Kubernetes - What is Kubernetes 🔥

What problems does Kubernetes solve?
What features do container orchestration tools offer?

🔥 2. Main K8s Components explained 🔥

K8s has tons of components, but most of the time you are only working with a handful of them. This part shows you step by step how each component helps you to deploy your application and what the role of each of those components is.

Node and Pod
Service and Ingress
ConfigMap and Secret
Volumes
Deployment and StatefulSet

🔥 3. Kubernetes Architecture 🔥

In this part you will learn about Master and Worker Nodes, which make up the Kubernetes cluster.

Worker Nodes
Master Nodes
Api Server
Scheduler
Controller Manager
etcd - the cluster brain

🔥 4. Minikube and kubectl - Local Setup 🔥

What is Minikube?
What is kubectl? K8s Command Line Tool
Install minikube and kubectl
Create and start a Minikube cluster

🔥 5. Main Kubectl Commands 🔥

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

🔥 6. K8s YAML Configuration File 🔥

In this part you'll learn the syntax and contents of K8s configuration file , which is the main tool for creating and configuring components in a Kubernetes cluster.

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

🔥 7. Complete Demo Project 🔥

Instead of creating each component separate without context, this part goes through a complete application setup using several Kubernetes components. It's a hands-on, practical tutorial of using the different Kubernetes Components together, which will give you a big picture.

Overview of the demo:

Create MongoDB Pod
Create MongoExpress Pod
Create ConfigMap for DB URL
Create Secret for DB Credentials
Create MongoDB Internal Service to connect to the Pod
Deployment Service and Config Map
Create MongoExpress External Service to connect from the Browser

🔥 8. 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

🔥 9. Kubernetes 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

🔥 10. Helm - 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!)

🔥 11. Persisting Data in Kubernetes 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 abstraction

🔥 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

🔥 Kubernetes 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

► Get 30% off - with this code: UDEMY_NANA_NOV2020: Udemy course here
► Kubernetes 101: Compact and easy-to-read ebook bundle 🚀
It's a handy way to quickly look something up or refresh your knowledge at work and use it as your cheatsheet 😎

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