Challenge, Easy, on
Gracefully Stop a Container With a Lengthy Shutdown Sequence
Learn how to properly stop a Docker container whose application needs more than the default 10 seconds to shut down gracefully.
Submissions: 80/143
Challenges
Focused, hands-on problems for sharpening your DevOps and server-side skills. Some teach specific concepts while others mirror real-world scenarios. Every challenge includes hints, feedback, and automated solution checks.
Docker 101: Signal a Running Containerized Application
Practice using UNIX signals with containers for controlling application behavior: Send a SIGUSR1 to a containerized app to trigger its memory usage reporting.
Submissions: 643/1052
Ensure a Graceful Termination for a Containerized Node.js Application
Can you resolve issues with a Node.js container's termination process to ensure graceful shutdown on 'docker stop'?
Submissions: 224/466
Ensure a Graceful Termination for a Container With an Entrypoint Script
Can you make a container exit gracefully after the 'docker stop' command while preserving its extensible entrypoint mechanism?
Submissions: 88/186
Send a Signal to a Kubernetes App: a Simple Case
Learn how to send a signal to an application running as a Kubernetes pod.
Submissions: 644/1057