What happens if the Spring context crashes during deployment in Kubernetes?

If the Spring context crashes during deployment in Kubernetes, the container running the application usually terminates with an error (Crash). Kubernetes detects that the container has exited with a non-zero return code and, depending on the controller settings (e.g., Deployment), attempts to restart the container.

If the problem with the context is persistent (for example, a configuration error, missing required beans), the container will keep crashing and restarting, which is called CrashLoopBackOff.

To prevent such situations, in Kubernetes, you can configure:

• Readiness and Liveness probes to monitor the application's health.
• Restart policy (restartPolicy).

Ultimately, a Spring context crash leads to application failure, which Kubernetes perceives as a container failure and tries to recover until the issue is resolved.