X_LIFECYCLE_DRAINED

a drained process cannot become ready again

a role called markReady() in a process whose lifecycle has already drained — a second httpServer().start(), or a boot that started a role after SIGTERM arrived. state never leaves stopped and drain() memoizes, so the socket such a role binds answers 503 to every request and nothing is left to close it: measured, still accepting connections after its own stop() returned. A container role (runRole) whose boot meets it because SIGTERM arrived mid-boot does NOT surface it: that is a rollout superseding the pod, so the boot finishes the drain, logs ultimate boot interrupted by shutdown at info with this code, and exits 0 (As of 2026-10-17)

start every role BEFORE the first drain — a drained process is on its way out and is replaced, never reused. In a test, call resetLifecycle() from @ultimat3/core between the drain and the next start()