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Get a quick start with Kubernetes, learn to create containerized applications, manage deployments across infrastructures, and prepare for advanced Kubernetes concepts.

k8s.tar.gz

Kubernetes Test

Explore Source Code

Run the Source Code

Kind 

Access the Application

Multi-node cluster

Scale the application UP

Deploy the rollout

Monitor the rollout

Kubernetes helps deploy and manage containerized applications at scale. It abstracts the underlying infrastructure, so it doesn’t matter if you’re deploying your applications to Amazon Web Services, Google Cloud, Linode, or your own on-premises data center.

In this course, you’ll learn why we have Kubernetes, what it is, where it’s going, and how to create containerized applications. By the end of this course, you’ll be ready to tackle more advanced concepts and take your Kubernetes skills to the next level.

Quick Start with Kubernetes

kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
nodes:
- role: control-plane
- role: worker
- role: worker

kind: Deployment       #   <<== Type of object being defined
apiVersion: apps/v1    #   <<== Version of object to deploy
metadata:
  name: qsk-deploy
spec:
  replicas: 5                #   <<== How many Pod replicas
  selector:
    matchLabels:            # <<== Tells the Deployment controller
      project: qsk-book     #  <<== to manage Pods with this label
  template:
    metadata:
      labels:
        project: qsk-book   #  <<== Give all replicas this label
    spec: 
      containers:
      - name: qsk-pod
        imagePullPolicy: Always   # <<== Never use images from local machine
        ports:
        - containerPort: 8080             # <<== Network port
        image: nigelpoulton/qsk-book:1.0  # <<== Container image to use

# 2022 version
apiVersion: v1
kind: Pod
metadata:
  name: first-pod
  labels:
    project: qsk-book
spec:
  containers:
    - name: web-ctr
      image: nigelpoulton/qsk-book:latest
      ports:
        - containerPort: 8080


# 2022 version
apiVersion: v1
kind: Service
metadata:
  name: cloud-lb
spec:
  type: LoadBalancer
  ports:
  - port: 80
    targetPort: 8080
  selector:
    project: qsk-book





# 2022 version
apiVersion: v1
kind: Service
metadata:
  name: svc-local
spec:
  type: NodePort
  ports:
  - port: 8080
    protocol: TCP
    targetPort: 8080
    nodePort: 31111
  selector:
    project: qsk-book
    


Getting Started

What Is Kubernetes?

Why Is Kubernetes Important?

What Does Kubernetes Look Like?

Getting Kubernetes

Creating a Containerized Application

Running an Application on Kubernetes

Deploying a Web Application over Kubernetes

Self-Healing

Scaling the Application

Performing a Rolling Update

Fault-Tolerant Web Hosting on Kubernetes

Kubernetes Exam

Appendix: Lab Code

Epilogue

Self-Heal from a Worker Node Failure

Playground