Graceful shutdown in Kubernetes

TL;DR: In this article, you will learn how to prevent broken connections when a Pod starts or shuts down. You will also learn how to shut down long-running tasks and connections gracefully. In Kubernetes, creating and deleting Pods is one of the most common tasks. Pods are created when you execute a rolling update, scale deployments, for every new release, for every job and cron job, etc. However,

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gracePeriodを伸ばしてもそれとは非同期でiptablesから外されてprometheusなどからアクセスできなくなっちゃうから、長時間残したいなら置換せずに新しいdeployment立てたほうがよいと