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Learn Kubernetes with 3-tier Project[CKA Basics]

Name: Learn Kubernetes with 3-tier Project[CKA Basics]
Rating: 4.7 (3 reviews)

In this module, we will setup lab using kubeadm, I will be setting up on on a vm [4gb ram, 2cpu,60gb hd]

Created byAmit Maheshwari

Last updated 2/2025

English

English [Auto],

What you'll learn

Hands-On for Kubernetes
Yaml writing and kubectl commands
Learn kubernetes with hands-on approach
All the SME, which are interested in Kubernetes or Microservice this is good starting point
Infra Engineer, Developers, QA engineer

Course content

9 sections • 29 lectures • 2h 58m total length

Introduction2:33
What we are covering in this course, how the setup will be done.
What is Container Runtime and Why it is required2:38
- What is Container Runtime
- Example of Container Runtime application
- Container LifeCycle
Introduction to COE(Container Orchestration Engine)5:32
Explaination about COE?
Why COE is required

Kubernetes Control Plane Architecture8:18
Explain about kubernetes control plane components
Introduction to kubeadm5:36
Explain about kubeadm
kubeadm init
kubeadm join
Kubernetes Worker node components4:15
This section covers workernode components : container runtime, kube-proxy and kubelet
What is Kubectl2:11
Explain about kubectl
CKA VM Setup [Vmware workstation+ ubuntu 24 server edtion]4:55
This is home lab vm setup.
Software used: VMware Workstation 17
OS: ubuntu 24.04
Docker CE installation [Container Runtime]4:08
Kubernetes control plane setup using kubeadm9:10
- Intallation of kubeadm,kubectl and kubeet
- setting up master
Any issue drop a mail: amit@openwriteup.com [ with screenshots]
Kubernetes basic

Replication Controller8:11
Perform lab 1
https://www.openwriteup.com/?page_id=957
Replica Set9:01
Lab2:
https://www.openwriteup.com/?page_id=957
Deployments explain yaml5:15
explain about deployment, why deployment is required
lab 3
https://www.openwriteup.com/?page_id=957
Deployment [Rolling update]7:15
lab 4
https://www.openwriteup.com/?page_id=957
Deployment [Recreate Strategy]5:07
Recreate strategy
lab 5: https://www.openwriteup.com/?page_id=957

ClusterIP type service10:11
This video explains:
- Why service requires
- Default svc type
- yaml file explaination
- Service Discovery process
ClusterIP type Sevice Lab3:45
Create a deployment from deployment.yaml with label app: nginx, then create a cluster IP service and observe three pods and their endpoints receiving traffic in a round-robin fashion.
NodePort type service5:43
Learn how the NodePort service exposes a Kubernetes app to the outside world by mapping a cluster service to a port in the 30000-32767 range.

Configmaps7:21
Explore how config maps store non-confidential data for pods, map values as environment variables or volumes. Define a config map in YAML with data keys and values and mount them.
Secrets8:38
Learn how Kubernetes secrets pass sensitive data like usernames, passwords, tokens, and TLS certificates to pods using environment variables or volumes, with types like basic auth, ssh, and bootstrap tokens.

Explanation about the project14:55
This is project 1. WordPress Deployment & Service
• Deployment
o Runs a single WordPress instance (replicas: 1).
o Uses the latest WordPress Docker image.
o Connects to the MariaDB database (db) for data storage.
o Reads database credentials from a Kubernetes Secret (db-secret).
o Uses a PersistentVolumeClaim (wb-pvc) for wp-content, ensuring data persistence.
• Service
o Exposes WordPress via a NodePort service on port 30080.
o Allows external access to WordPress through http://<NodeIP>:30080.
2. phpMyAdmin Deployment & Service
• Deployment
o Runs a single phpMyAdmin instance (replicas: 1).
o Connects to the MariaDB database (db) for database management.
o Uses db-secret for MYSQL_ROOT_PASSWORD.
• Service
o Exposes phpMyAdmin via a NodePort service on port 30081.
o Allows external access through http://<NodeIP>:30081.
3. MariaDB (Database) Deployment & Service
• Deployment
o Runs a single MariaDB instance (replicas: 1).
o Stores database credentials (MYSQL_ROOT_PASSWORD, MYSQL_USER, MYSQL_PASSWORD, MYSQL_DATABASE) in a Kubernetes Secret (db-secret).
o Uses a PersistentVolumeClaim (db-pvc) to store MySQL data at /var/lib/mysql, ensuring data persistence.
• Service
o Provides an internal ClusterIP service to allow WordPress and phpMyAdmin to connect on port 3306.
Dependency Flow
1. WordPress → Connects to MariaDB (db) using environment variables from db-secret.
2. phpMyAdmin → Connects to MariaDB (db) for database management.
3. MariaDB (db) → Stores WordPress data and user credentials.
4. Persistent Volumes (wb-pvc, db-pvc) → Ensure that WordPress media content and database data persist even if pods restart.

Requirements

Basic of linux and docker

Description

This course includes:

- Setup using kubeadm, Why kubeadm how it provision the components. what is PKI, static pods

- Master components [ apiserver,etcd,scheduler and controller manager]

- Worker node componets: kube-proxy,kubelet,Container runtime

- Only single node setup, i will be using vmware workstation 17, ubuntu 24 server edition.

- As container runtime i will be using Docker-CE. This course includes the setup and step by step explaination for each topic

- Explain each component in details: cluster components,namespace,resources, quota, Pods, service, Deployments ,RC, Configmap,secrets,pv,pvc, and a full project where i will use the multiple api

- Each session will contain exercise, which will be interactive , attendees should perform all the labs, and please check with lab guide, if is done correctly

- Session will contain mcq and questionare to check the participant understanding.

- Troubleshooting part also would be covered throughout the session.

- We will be having different labs and solution session as well.

- Project: Three tier application would be developed: wordpress, mysql and phpadmin. We will perform the project in single namespace and across multiple namespace.

- Detail explaination about the project

- Provide full labs with details steps.

- We will be adding more api based on the feedback. Please provide feedback, and comments on the sections

Who this course is for:

Intermediate level who is familiar with Linux
Basic knowledge of docker

Learn Kubernetes with 3-tier Project[CKA Basics]

What you'll learn

Explore related topics

Course content

Introduction3 lectures • 11min

Kubernetes Architecture7 lectures • 39min

Kubernetes Api, yaml, AKMS, namespace4 lectures • 15min

Kubernetes Workload Api: Pod3 lectures • 17min

Workload Api: Replication Controller, Replica Set, Deployment5 lectures • 35min

Services3 lectures • 20min

Storage api : PV and PVC1 lecture • 12min

Secrets and Configmaps2 lectures • 16min

Project: Using deployment,secrets,pv,pvc,ns,services1 lecture • 15min

Requirements

Description

Who this course is for: