Challenges | iximiuz Labs

This challenge was prepared for you by the iximiuz Labs team.

Reach a Distroless Container's Debug Endpoint From a Sidecar Container

A distroless container serves a debug interface on its own loopback address. Can you reach this debug endpoint using nothing but standard Docker commands?

#docker #namespaces #container-networking #debugging #distroless

This challenge was prepared for you by the iximiuz Labs team.

Challenge on Linux, Networking

Call an HTTP API with curl: Creating, Updating, and Deleting Resources

by Ivan Velichko

Practice calling HTTP APIs from the command line: send JSON bodies with POST, PUT, and PATCH, upload a file, delete a resource, and read the status codes the server answers with.

#curl #http #linux-101

This challenge was prepared for you by the iximiuz Labs team.

Challenge on Linux, Networking

Identify the Source of Unexpected Requests in an On-Prem Network

by Ivan Velichko

An internal service started receiving requests from unexpected IP addresses. Identify the unexpected sources and find out which systems are behind them.

#ip #dns #investigation

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Kubernetes, Linux

Copy Config Files from a Running Pod

by Omkar Shelke

A Deployment is running in the platform namespace with 3 replicas. Each pod has configuration files at /app/config/. Copy those files to /home/laborant/config/ on the local machine.

#ckad #cka #kubectl #configmap #tar

This challenge was prepared for you by the iximiuz Labs team.

Challenge on Linux

Automate Drive Provisioning With a Shell Script

by Ivan Velichko

Turn the manual storage provisioning workflow into an automation script: partition, format, mount, and persist a blank drive with a single non-interactive script.

#storage #partition-table #filesystem

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Kubernetes, Linux

Extend kubectl with a Custom Image-Inspection Plugin

by Omkar Shelke

A helper script that lists every container image running in the cluster — along with its on-disk size and the workload that uses it — has been downloaded to cplane-01. Install it as a kubectl plugin named kubectl-images so that kubectl images works from any directory.

#cka #kubectl-plugin #images #cluster-inspection

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Programming, Linux

Write a C Program Without a main() Function

by Başar Subaşı

Produce a valid ELF binary that runs and exits cleanly, but does not define a main() function.

#c #gcc #assembly #linker #elf

This challenge was prepared for you by the iximiuz Labs team.

Challenge on Networking, Linux

Reach a Remote Loopback Port Through an SSH Jump Host

by Ivan Velichko

An inventory service lives inside a private VPC and keeps its debugging port bound to 127.0.0.1. Use SSH local port forwarding with a jump-only bastion to query the debugging port from your workstation.

#ssh #tunnel #port-forwarding #bastion #jump-host

This challenge was prepared for you by the iximiuz Labs team.

Challenge on Networking, Linux

Reach Internal Servers Through a "No Shell" SSH Bastion

by Ivan Velichko

The application fleet lives inside a private VPC, reachable only through a locked-down bastion that refuses to give you a shell. Find a way to jump through the bastion and place a maintenance lock on two misbehaving servers.

#ssh #bastion #jump-host

This challenge was prepared for you by the iximiuz Labs team.

Challenge on Networking, Linux

Reach a Private VPC Service Through an SSH Bastion

by Ivan Velichko

A production search cluster lives inside a private VPC and is reachable only from within it. Use SSH local port forwarding through a public-facing bastion host to query the cluster's API from your dev machine.

#ssh #tunnel #port-forwarding #bastion