jcmoraisjr/haproxy-ingress

Features

• Load Balancers - Acts as a high-performance proxy and load balancer that distributes network traffic across backend services.
• Blue-Green Deployments - Splits traffic between different server groups using weights, headers, or cookies to facilitate controlled application releases.
• Ingress Controllers - Routes external HTTP and TCP traffic into a Kubernetes cluster by dynamically configuring HAProxy based on ingress resources.
• Routing State Synchronization - Updates load balancer configurations in real time by monitoring the cluster for changes to ingress resources.
• Kubernetes Controllers - Manages cluster state through declarative reconciliation loops to translate ingress definitions into proxy configurations.
• Load Balancing Algorithms - Distributes incoming traffic across backend servers using configurable algorithms to ensure high availability.
• Kubernetes Application Exposers - Exposes internal cluster services to external traffic by mapping hostnames and paths to specific backend applications.
• Advanced Traffic Routing - Supports complex traffic patterns including path rewriting, header manipulation, and custom routing rules.
• Dynamic Service Discovery - Updates backend server lists dynamically using DNS service discovery to support scalable infrastructure.
• TLS Certificate Management - Automates certificate issuance, renewal, and provisioning using standard protocols for secure client-server communication.
• Access Control - Enforces security through IP whitelisting, authentication, and CORS policies to protect sensitive backend services.
• Configuration-Driven Templating Engines - Generates proxy configuration files by processing structured templates based on cluster metadata.
• Control and Data Plane Separation - Separates control plane logic from the proxy process to allow independent lifecycle management and versioning.
• Event-Driven Synchronization - Updates application state based on real-time event streams from infrastructure daemons to maintain consistency between the cluster and proxy.
• Ingress Class Selectors - Processes specific ingress objects based on class names to allow multiple controllers to coexist within a cluster.
• Backend Identifiers - Assigns stable identifiers to backend servers based on unique pod addresses to ensure consistent request routing.
• Service Mesh Alternatives - Provides a lightweight approach to managing traffic routing, security, and observability at the edge without full service mesh complexity.
• Proxy Configuration Injections - Injects custom parameters and proxy directives into global, frontend, or backend sections for specialized routing.
• Cloud Native Networking - Provides tools and patterns for managing service connectivity, traffic routing, and security policies within containerized infrastructure.
• Connection Rate Limiting - Caps concurrent connections and request rates per client IP to mitigate traffic spikes and protect services.
• DNS-Based Service Discovery - Resolves backend service endpoints through internal network lookups to maintain accurate routing tables in highly volatile environments.
• Gateway API Integrations - Monitors and parses cluster networking resources to automate traffic routing decisions based on industry standards.
• Session Persistence - Ensures client requests are routed to the same backend server using cookies to preserve session state for consistent user interactions.
• Backend Protocol Settings - Configures communication protocols like HTTP/1, HTTP/2, and FastCGI between the proxy and backend services.
• Port-Based Traffic Routings - Forwards raw network connections from specific ports to designated backend services to ensure traffic reaches the correct destination without modifying underlying data.
• Non-HTTP Traffic Routing - Directs raw TCP or UDP traffic to internal services based on port mappings for protocols outside the standard web stack.
• HTTP Request Redirections - Redirects requests sent to the root context or unmatched hostnames to designated application paths or default backends to simplify URL structures.
• Hot-Reloading Mechanisms - Updates the proxy process configuration in real time via local sockets to avoid service interruptions during scaling.
• Controller Scope Restriction - Restricts the controller's watch and configuration scope to a single namespace to improve security and resource isolation.
• Cluster Security - Protects backend services by implementing IP whitelisting, basic authentication, and integration with external web firewalls.
• Cross-Namespace Reference Grants - Manages permissions for resources in one namespace to reference secrets or services in another for secure configuration sharing.
• Web Application Firewalls - Connects to external security agents to inspect incoming traffic for malicious patterns and block unauthorized requests.
• Health Monitoring Endpoints - Provides endpoints for health checks, readiness probes, and performance monitoring data for external observability tools.
• Custom Health Check Sequences - Executes auxiliary health checks independently to monitor server status and dynamically adjust load balancing weights.
• Connection Draining - Maintains persistent connections to terminating or unhealthy pods to ensure graceful shutdown of active sessions.
• API Gateways and Proxies - Ingress controller implementation using HAProxy.

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