Using NGINX Ingress in Kubernetes

Introduction

In Kubernetes, an Ingress is a collection of rules that allow inbound connections to reach the cluster services. NGINX Ingress is a popular Ingress controller that uses NGINX as a reverse proxy and load balancer.

What is NGINX Ingress?

NGINX Ingress Controller provides a way to manage external access to services in a Kubernetes cluster. It can terminate SSL, route traffic based on hostnames or paths, and load balance requests.

Installation

To install the NGINX Ingress Controller on your Kubernetes cluster, you can use the following command:

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/main/deploy/static/provider/cloud/deploy.yaml

This command deploys the NGINX Ingress Controller along with necessary resources.

Configuration

To configure the Ingress resource, you can create a YAML file that defines the routing rules. Here’s an example:

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

In this example, requests to example.com will be routed to the example-service on port 80.

Best Practices

• Use TLS termination for secure connections.
• Implement rate limiting to prevent abuse.
• Keep your NGINX Ingress Controller updated to leverage new features and security patches.
• Monitor your Ingress traffic for insights and troubleshooting.

FAQ