Statistics
This page provides access to Envoy Gateway statistics and metrics. Metrics are exposed in Prometheus format for monitoring and alerting.
/api/metrics (Available on Admin Port)
📈 Metrics Categories
Envoy Gateway exports metrics in six main categories to monitor different aspects of the control plane:
🔄 Watching Components
Core Function: Monitor the internal event-driven architecture of Envoy Gateway components.
Components: Gateway API Translator, Infrastructure Manager, xDS Server, xDS Translator, Global RateLimit
📝 Status Updater
Core Function: Track status updates for Gateway API resources to ensure proper resource state management.
Resources: GatewayClass, Gateway, HTTPRoute, GRPCRoute, TLSRoute, etc.
🌐 xDS Server
Core Function: Monitor the xDS (Discovery Service) server that provides configuration to Envoy proxies.
Critical for proxy configuration delivery and connection health
🏗️ Infrastructure Manager
Core Function: Monitor Kubernetes resource operations performed by Envoy Gateway.
Tracks Deployments, Services, ConfigMaps, and other Kubernetes resources
🔧 Wasm
Core Function: Monitor WebAssembly extension management and remote fetch operations.
Essential for custom extension performance and availability
🗺️ Topology Injector
Core Function: Monitor the webhook that injects node topology information into EnvoyProxy pods.
Critical for multi-zone deployments and traffic locality optimization