September 2025
Beginner to intermediate
488 pages
12h 55m
English
Content preview from Learn Docker in a Month of Lunches, Second Edition
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8 Supporting reliability with health checks and dependency checks
We’re on a journey toward making software production-ready in containers. You’ve already seen how straightforward it is to package apps in Docker images, run them in containers, and define multi-container apps with Docker Compose. In production, you’ll run your apps in a container platform (e.g., Kubernetes), which has features that help you deploy self-healing apps. You can package your containers with information the platform uses to check whether the application inside the container is healthy. If the app stops working correctly, the platform can remove a malfunctioning container and replace it with a new one. In this chapter, you’ll learn how to package those checks into ...
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