Getting Started with Kubernetes

Kubernetes has become the de facto standard for container orchestration. In this post, I’ll walk through the basics of getting your first application deployed.

Prerequisites

Before we begin, make sure you have:

  • kubectl installed
  • Access to a Kubernetes cluster (minikube, kind, or a cloud provider)
  • A container image to deploy

Creating a Deployment

The simplest way to deploy an application is using a Deployment resource:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-app
spec:
  replicas: 3
  selector:
    matchLabels:
      app: my-app
  template:
    metadata:
      labels:
        app: my-app
    spec:
      containers:
      - name: my-app
        image: nginx:latest
        ports:
        - containerPort: 80

Exposing the Service

Once your deployment is running, you’ll want to expose it:

kubectl expose deployment my-app --type=LoadBalancer --port=80

Next Steps

  • Learn about ConfigMaps and Secrets
  • Set up horizontal pod autoscaling
  • Implement health checks with liveness and readiness probes

That’s the basics! In future posts, I’ll dive deeper into advanced Kubernetes patterns.