Install Ingress NGINX on Google Kubernetes Engine (GKE)

Ingress NGINX (not to be confused with NGINX Ingress) is a Kubernetes ingress controller that uses NGINX as a reverse proxy and load balancer.

Install

The simplest way to install is via the official Helm chart:

helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
helm repo update

helm upgrade ingress-nginx ingress-nginx/ingress-nginx \
  --install                 \
  --namespace ingress-nginx \
  --create-namespace        \
  --wait

Once installed, here is a complete example manifest that deploys a service and exposes it via an ingress with TLS:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: example-deployment
  namespace: example
spec:
  selector:
    matchLabels:
      app: example
  template:
    metadata:
      labels:
        app: example
    spec:
      containers:
      - name: example
        image: nginx
        ports:
        - containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: example-service
  namespace: example
spec:
  selector:
    app: example
  ports:
  - port: 80
    targetPort: 80
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: example-ingress
  namespace: example
spec:
  ingressClassName: nginx
  rules:
  - host: example.mydomain.com
    http:
      paths:
      - path: /
        backend:
          service:
            name: example-service
            port:
              number: 80
        pathType: Prefix
  tls:
    - secretName: certificate-tls
      hosts:
        - example.mydomain.com

Confirm the ingress has been created and assigned an external IP:

$ kubectl get ingress
NAME                              CLASS   HOSTS                     ADDRESS         PORTS     AGE
example-ingress                   nginx   example.mydomain.com      11.22.33.44     80, 443   64d

Now that cert-manager, ExternalDNS, and Ingress NGINX are all deployed, the base environment is ready. Any application you deploy on the cluster can now benefit from:

• Automatic SSL certificates via cert-manager and Let’s Encrypt
• Automatic DNS registration via ExternalDNS and Google Cloud DNS
• Ingress routing via Ingress NGINX

No more manual certificate renewals or DNS updates — the stack handles it all for you.

References :

• GitHub : https://github.com/kubernetes/ingress-nginx