Why Kubernetes Ingress Controllers Leak Memory Under Load

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Why Kubernetes Ingress Controllers Leak Memory Under Load

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Lucas and Luna dive into a specific production issue that has plagued Kubernetes operators for years: memory leaks in ingress controllers under sustained traffic. They trace the problem to connection tracking and endpoint slice churn, citing a real incident where NGINX Ingress consumed 4GB of RSS in under 48 hours. The episode walks through diagnosis via pprof, root cause in the upstream connection pool, and practical mitigations like adjusting keepalive timeouts and using endpoint slice filtering. No fluff — just one concrete, actionable debugging story for anyone running Kubernetes in production. #Kubernetes #IngressController #MemoryLeak #NGINXIngress #KubernetesNetworking #EndpointSlice #ConnectionPooling #pprof #ProductionDebugging #ContainerOrchestration #TechPodcast #DevOps #SiteReliabilityEngineering #FexingoBusiness #BusinessPodcast #CloudNative #Microservices #KubernetesSRE Keep every episode free: buymeacoffee.com/fexingo

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