What ingress controllers have you worked with?

NGINX Ingress Controller, Traefik, HAProxy Ingress.

NGINX Ingress Controller, based on the widely used web server NGINX, is perhaps the most popular choice. It offers rich functionality, including load balancing, SSL termination, authentication, and traffic management. It supports Kubernetes annotations for advanced routing rule configuration.

Traefik is a modern cloud-native Ingress Controller. It is characterized by ease of configuration and automatic service discovery. It has built-in support for Let's Encrypt. It efficiently uses dynamic configuration.

HAProxy Ingress Controller uses the high-performance proxy HAProxy. It is known for its stability and extensive configuration options for complex load balancing and routing scenarios.

Experience with them includes:

• Installation and configuration via Helm Charts or YAML manifests.
• Creating and managing Ingress resources for traffic routing to services.
• Configuring SSL/TLS certificates (via Kubernetes Secrets).
• Using annotations for specific configurations (e.g., rewrite rules, sticky sessions).
• Interacting with other cluster components (Service, Secret, Deployment/StatefulSet).
• Monitoring performance and debugging routing issues.

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: example-ingress
  annotations:
    # Example annotation for NGINX Ingress Controller
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - host: example.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: example-service
            port:
              number: 80