Orientation brief

Health, Logging & Debugging

Your containers are running. Your compose file is perfect. Everything works... until it doesn't. A container silently fails. An application seems to be running but isn't responding. Logs show cryptic errors. You're not sure if the database is even ready when your app tries to connect. Production applications aren't just about getting containers to start. They're about keeping them healthy, understanding what they're doing, and diagnosing problems when they occur. This module is about operational excellence. You'll learn: - How to implement health checks so Docker knows if your container is truly working - How to access, manage, and analyze container logs - Debugging techniques for common container problems - How to inspect running containers - Monitoring resource usage - Best practices for production logging By the end, you'll have the skills to troubleshoot any Docker issue and maintain healthy, observable containerized applications.

Understand the problem this module is here to solve.

Read 6 chapters in order, from context to application.

Practice the module concepts through focused exercises.

Chapter route

Read in order

Practice

Module exercises

Move from reading to investigation with scenario-based practice for this module.

Open exercises →