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Docker 101: Pause and Unpause a Containerized Application
Practice pausing and resuming a running container: start a resource-hungry container, pause it, inspect its state, and then unpause it back to life.
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Practice pausing and resuming a running container: start a resource-hungry container, pause it, inspect its state, and then unpause it back to life.
This challenge focuses on debugging memory usage issues in a Go application deployed in a Kubernetes cluster. The goal is to ensure the application can handle moderate traffic without crashing, even when it runs with significantly constrained memory resources.
Hack your way through this challenge making the OOM kills invisible again.
Prove your SRE skills - deploy a resource-greedy application to a Kubernetes cluster and make it run for a while without disrupting the service.
Run a multi-container Docker Compose application limiting its total CPU and memory usage without specifying the individual container's limits.
Learn how to fine-tune the container's cgroup to make the container exit when one of its processes runs out of memory.
Prove your SRE skills - identify and stop an overloaded container, then start a new one with limited CPU and RAM resources.