# Proper (Java) application life cycle management in Kubernetes

DevFeed: [Proper (Java) application life cycle management in Kubernetes](<https://devfeed.tech/articles/proper-java-application-life-cycle-management-in-kubernetes-28011.md>)

Original publisher: [Read original article](<https://tech.trivago.com/post/2021-06-09-application-lifecycle-management-kubernetes/>)

Author: Stefan Nothaas Java Software; Backend Engineer

Published: 2021-06-09T00:00:00Z

Content type: tutorial

Language: en

Sources: [Trivago](<https://devfeed.tech/sources/trivago.md>)

Topics: [Kubernetes](<https://devfeed.tech/topics/kubernetes.md>), [Java](<https://devfeed.tech/topics/java.md>), [Docker](<https://devfeed.tech/topics/docker.md>), [Processes](<https://devfeed.tech/topics/processes.md>), [Deadlock](<https://devfeed.tech/topics/deadlock.md>)

Tags: [applications](<https://devfeed.tech/tags/applications.md>), [backend](<https://devfeed.tech/tags/backend.md>), [cloud](<https://devfeed.tech/tags/cloud.md>), [deadlock](<https://devfeed.tech/tags/deadlock.md>), [devops](<https://devfeed.tech/tags/devops.md>), [docker](<https://devfeed.tech/tags/docker.md>), [java](<https://devfeed.tech/tags/java.md>), [kubernetes](<https://devfeed.tech/tags/kubernetes.md>), [lifecycle](<https://devfeed.tech/tags/lifecycle.md>), [process](<https://devfeed.tech/tags/process.md>)

## AI overview

This article explains lifecycle management for Java applications running in Docker containers on Kubernetes. Drawing on trivago's search backend, it discusses startup, runtime, and shutdown behavior, including PID 1 process handling, signal communication, proper crash behavior, and avoiding zombie states caused by issues such as deadlocks.

## Source excerpt

When operating applications in Kubernetes, proper lifecycle management is crucial to enable Kubernetes to manage applications correctly throughout their different phases: startup, runtime and sh...