The Hidden Trap in Node.js Cluster Auto-Restart During Kubernetes Deployments

Node.js developers often overlook a critical vulnerability in cluster auto-restart logic: when orchestrators like Kubernetes initiate graceful shutdowns via SIGTERM, the master process continues spawning replacement workers, creating a destructive tug-of-war that defeats zero-downtime deployments. Understanding this conflict and implementing state-gated lifecycle management is essential for reliable production infrastructure.