Docker Desktop Kubernetes Deployment Demystified: Leveraging Ingress, Services, and Deployments

The goal of this Medium article is to provide a comprehensive, step-by-step guide to deploying any application on Docker Desktop with Kubernetes workloads, emphasizing the essential components of Ingress, Services, and Deployments. This technical guide is designed to empower developers and IT professionals with the knowledge and skills needed to harness the full potential of Docker Desktop for Kubernetes deployment.

Prerequisites

Before diving into the deployment process, there are a few prerequisites you need to have in place:

• Docker Desktop with Kubernetes Enabled
• Ingress Controller for Local(i.e., Ingress-Nginx Controller)
• Find the hosts file(C:\Windows\System32\drivers\etc) in your Windows machine
• Note: I used, kubectl alias as k it in my local

Deployment Steps

• Create a Deployment with the below manifest file(deployment.yaml)

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: demo
  name: nginx-deployment
spec:
  replicas: 1
  selector:
    matchLabels:
      app: demo
  template:
    metadata:
      labels:
        app: demo
    spec:
      containers:
      - image: nginx
        name: nginx
        ports:
        - containerPort: 80
        resources:
          requests:
            memory: "64Mi"
            cpu: "0.5"
          limits:
            memory: "128Mi"
            cpu: "1"

• Create a Service with the below manifest file(service.yaml)

apiVersion: v1
kind: Service
metadata:
  labels:
    app: demo
  name: nginx-service
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 80
  selector:
    app: demo

• With Ingress-Nginx Controller installed as per prerequisites, check its status with the below command

kubectl get pods --namespace=ingress-nginx

• Create an Ingress with the below manifest file(ingress.yaml)

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: nginx-ingress
spec:
  ingressClassName: nginx
  rules:
  - host: nginx.abdulgaffoor.local
    http:
      paths:
      - backend:
          service:
            name: nginx-service
            port:
              number: 80
        path: /
        pathType: Prefix

• Add nginx.abdulgaffoor.local in host file

• By having all the manifests files in a single directory, run the below command to deploy in the k8s cluster

kubectl apply -f .

• Check the status of deployments, service, and ingress with commands shown below

In summary, this guide has equipped you with the essential skills to deploy applications on Docker Desktop with Kubernetes. By mastering Ingress, Services, and Deployments, you’ve taken a significant step toward efficient container orchestration. Now, it’s your turn to put this knowledge into action and streamline your application deployment processes. Happy deploying!