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Identify the Source of Unexpected Requests in a Kubernetes Cluster
An internal service started receiving requests from unexpected IP addresses. Identify the unexpected sources and find out which workloads and teams are behind them.
Challenges
Focused, hands-on DevOps and server-side problems with hints, feedback, and automated solution checks.
Official Collection
Challenges crafted by iximiuz Labs to help you master DevOps and Server Side topics.
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Access a Private Kubernetes API Server Through an SSH SOCKS Proxy
The production Kubernetes cluster lives inside a private VPC, and its API server has no public endpoint. Turn an SSH connection to the bastion host into a SOCKS proxy and teach kubectl to use it, so the cluster becomes manageable from your workstation.
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Diagnose and Resolve Stability Issues in a Go Application Deployment
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.
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What Port Does This Kubernetes Pod Listen On?
Be a networking Sherlock Holmes - find out which port a Kubernetes app uses and send a request to it.
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Send a Signal to a Kubernetes App: a Slim Container Case
Learn how to send a signal to a Kubernetes app running in a container without shell.
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Kubernetes Pod With a Faulty Init Sequence
Identify what causes the Pod initialization to fail and fix it while keeping the Pod images unchanged.
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Kubernetes Pod With a Sleepy Init Sequence
Identify what causes the Pod initialization to fail and fix it while keeping the Pod images unchanged.