Deploying Nginx on Kubernetes: A Step-by-Step Guide

In the world of cloud-native applications, Kubernetes and Docker are indispensable tools for managing containerized applications at scale. In this article, I'll walk you through deploying Nginx on Kubernetes, and show you how to manage replicas for high availability.

Prerequisites:

Before we get started, make sure you have the following installed:

• Google Cloud SDK
• Docker
• kubectl

Step 1: Create a Kubernetes Cluster

Step 2: Deploy Nginx

Create a deployment configuration file named nginx-deployment.yaml:

nginx-deployment.yaml:

Apply the deployment to your Kubernetes cluster:

Verify the deployment:

Step 3: Expose Nginx Service

To expose Nginx to the outside world, create a service configuration file named nginx-service.yaml:

nginx-service.yaml:

Apply the service configuration:

Get the external IP address of the service:

Step 4: Scale Nginx Deployment

To ensure high availability and load balancing, scale the Nginx deployment by increasing the number of replicas. Update the replicas field in the nginx-deployment.yaml file or use the kubectl scale command.

Update nginx-deployment.yaml:

Or, scale the deployment directly using kubectl:

Verify the new replica count:

Useful Links and Resources

• Google Cloud Platform Documentation: https://cloud.google.com/docs
• Kubernetes Documentation: https://kubernetes.io/docs/home/
• Docker Documentation: https://docs.docker.com/

By following these steps, you can deploy and scale Nginx on Kubernetes, ensuring your web server is highly available and resilient. Kubernetes makes it easy to manage containerized applications, and GCP provides the robust infrastructure needed for modern cloud applications.

A special shoutout to Google Developer Group #GDG-Aveiro for the inspiration and continuous support to the tech community!

Feel free to reach out if you have any questions or need further guidance!

#Kubernetes #Docker #GCP #Nginx #CloudComputing #DevOps #Containerization #GDG-Aveiro