A Sync Loop Is Not a Handshake: Keeping External Systems in Lockstep with Kubernetes

&ldquo;How do you keep an external system in lockstep with what Kubernetes knows?&rdquo; Kubernetes is the source of truth for a lot of state. Which pods exist, which ones are ready to serve traffic, which ones are going away. Plenty of systems outside the cluster need that same state. A service discovery registry is the obvious one. It needs to know the exact set of endpoints that can take…