In the dynamic landscape of Kubernetes, external exposure is a key consideration for applications. While LoadBalancer-type services provide a straightforward way to expose services externally, Ingress takes the game to a whole new level by offering a plethora of advantages.
- Single point of control: Ingress provides a single resource for defining external access rules, simplifying management compared to individual service configurations.
- Easier scaling and maintenance: You can update routing rules across multiple services without modifying each service, improving manageability in complex deployments.
- Consolidated security: You can apply security policies like TLS termination, authentication, and authorization at the ingress layer, benefiting all exposed services.
- Multiple services under one hostname: Ingress allows routing traffic to different services based on paths, hosts, or other criteria, enabling multiple applications under a single domain.
- Load balancing and health checks: Ingress can distribute traffic across multiple service instances for better performance and handle service failures gracefully.
- Advanced features: Some ingress controllers support features like URL rewrites, content caching, and websockets, extending your application's capabilities.
- External load balancer abstraction: Ingress decouples external load balancers from specific services, allowing you to use cloud-managed or custom solutions based on your needs.
- Reduced resource usage: By sharing a single load balancer for multiple services, ingress can potentially reduce resource consumption compared to individual service load balancers.
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