profile

Ivan Velichko

iximiuz Labs update: First Content is in, Invites are out 🚀

Published 10 months ago • 1 min read

Hello friends!

I've got some news!

First off, I just released the first piece of real content via iximiuz Labs - it's a tutorial Why and How to Use containerd From Command Line. The key "feature" of it is that it's backed by an automated solution checker.

The new tutorial format resembles my "classic" blog posts, but the materials are sprinkled with assignments, and students are expected to interact with the tutorial using the terminal on the right, while the background solution checker keeps a close eye on the state of the microVM. Any combination of the user's actions that brings the system to the "correct" state will make the text on the left send the student a positive reinforcement signal.

There were a lot of fun technical challenges behind this work, and I'll be happy to share them in greater detail in the nearest future, but for now, let me jump straight to the second portion of the news...

"Invite-wall" is going away!

Now anyone with a GitHub account can use the labs. It's still (very) early beta, so all sorts of bugs are expected, and servers can also run out of capacity at some point, but I really want to let as many folks as possible try out the platform.

What's next? I put a lot of effort into iximiuz Labs over the past half a year - all development still happens only in my free time (read - weekends, holidays, and vacations) - but with the last release, I may very well be done with the first version of the engine! So, I'm really looking forward to finally switching back from writing mostly code to doing more balanced work and reviving this newsletter and my other educational activities.

Have fun, do labs, and stay tuned!

Best

Ivan

P.S. Invite-wall is gone, but your support is still much needed!

Ivan Velichko

Software Engineer at day. Tech Storyteller at night. Helping people master Containers.

Read more from Ivan Velichko

Hello there! 👋 Debugging containerized applications is... challenging. Debugging apps that use slim variants of container images is double challenging. And debugging slim containers in hardened production environments is often close to impossible. Before jumping to the DevOps problems that I prepared for you this week, let's review a few tricks that can be used to troubleshoot containers. If the container has a shell inside, running commands in it with docker exec (or kubectl exec) is...

10 days ago • 1 min read

Hey hey! Are you ready for your next DevOps challenge? Last week, we all witnessed yet another terrifying cyber-security event, and this time, it was a direct hit - researchers from Snyk discovered a way to break out of containers! 🤯 The vulnerability was found in the fundamental component of the containerization ecosystem - the most popular implementation of the (low-level) OCI container runtime - runc. Notice how, on the diagram above, most high-level container runtimes actually rely on the...

29 days ago • 1 min read

Hello friends! Ivan's here - with my traditional monthly roundup of all things Linux, Containers, Kubernetes, and Server-Side craft 🧙 What I was working on After my announcement of the iximiuz Labs GA earlier this month, the platform's usage has more than doubled, so I had to focus on the system's stability and UX. As a result, I increased observability and test coverage, added one more bare-metal server, streamlined a bunch of use cases, and fixed a few bugs. The most notable user-facing...

about 1 month ago • 3 min read
Share this post