Vasilios Syrakis - kubernetes

Vasilios Syrakis - kubernetes A simple blog made with Zola and Duckquill Zola 2026-06-30T00:00:00+00:00 https://cetanu.github.io/tags/kubernetes/atom.xml For 12 years, I ignored Kubernetes 2026-06-30T00:00:00+00:00 2026-06-30T00:00:00+00:00 Vasilios Syrakis https://cetanu.github.io/blog/i-ignored-kubernetes-for-12-years/ <h1 id="my-introduction-to-kubernetes"><a class="zola-anchor" href="#my-introduction-to-kubernetes" aria-label="Anchor link for: my-introduction-to-kubernetes"><i class="icon"></i></a> My introduction to Kubernetes</h1> <p>Like many people I heard about kubernetes because it was software from Google that people were hyped about. I understood a little bit about it - it’s a container orchestrator, right?</p> <p>I also heard about painful experiences that people had with it and I got this impression that it was way too complicated for what it provided in most cases.</p> <p>We’ve all heard the meme “I deployed my blog on kubernetes” as a classic example of overengineering, and resume driven development when a team sets up kubernetes for a single application.</p> <p>While working in the industry, I was happy to let other people deal with this perceived complexity. I was willing to let them work out all the problems and figure out how to offer kubernetes to me as an end-user.</p> <h1 id="post-layoff"><a class="zola-anchor" href="#post-layoff" aria-label="Anchor link for: post-layoff"><i class="icon"></i></a> Post-layoff</h1> <p>However, as time went on, it seemed that the entire industry made a decision to adopt kubernetes, even if the overheads and complexity were of some cost, because the cost was outweighed by standardisation.</p> <p>Suddenly, every SRE / platform engineer role seemed to require knowledge of kubernetes. It was never too clear how much knowledge or skill was required, and there have been several interviews in which I’ve expressed that I don’t have any experience operating kubernetes (probably a bad thing to say in an interview) and yet interviewers did not seem to be able to give me a picture of how they use kubernetes and what I would need to know in order to sufficiently operate their clusters/infrastructure.</p> <h1 id="start-of-the-learning-journey"><a class="zola-anchor" href="#start-of-the-learning-journey" aria-label="Anchor link for: start-of-the-learning-journey"><i class="icon"></i></a> Start of the learning journey</h1> <p>So after being laid off in March 2026, it became apparent that learning kubernetes would be a good idea. Later in May, when my video went viral and an audience appeared with the desire to learn new things, particularly by being taught by myself, it made even more sense to learn kubernetes because it would give me the opportunity to both learn and teach at the same time.</p> <p>So I embarked on a journey to learn kubernetes with the least amount of patience possible, pressuring myself to learn it in a week. Over 7 live-streams, approximately 2-3 hours each, I gathered a decent picture of the kubernetes landscape, a bit of history, and what tools people use to deploy and manage kubernetes in modern times.</p> <h2 id=""><a class="zola-anchor" href="#" aria-label="Anchor link for: "><i class="icon"></i></a> </h2> <p>The very first thing I did was started streaming on Twitch, with the stream title “Added Kubernetes to my CV, now I have to learn it” and opened a browser, went to the kubernetes website and started reading docs linearly. After going through various concepts and basically trying to memorize them and failing, a few chatters informed me of Kelsey Hightower’s guide “Learning Kubernetes The Hard Way”.</p> <p>I started going through this tutorial, and found that it required at least 3 machines with 2GB of memory each, and I didn’t have that hardware laying around, and I didn’t want to run them on my stream PC. So I signed up to AWS and started to create EC2 instances manually, and SSHing onto them to set up hostnames and run OpenSSL commands to do PKI.</p> <p>At some point the tutorial was telling me to execute blobs of shell scripts and I became enraged at the suggestion because it’s been two decades since the advent of configuration management, and at least a decade since kubernetes has been released. So I thought that all this friction had already been smoothed out.</p> <p>In hindsight, the entire purpose of Kelsey’s guide is to expose someone to these low-level concerns. However, I am personally more in favor of getting something practical up and running quickly, and dealing with problems as they arise.</p> <p>So I started an argument with Gemini about Kelsey’s guide, and it graciously agreed that no sane engineer would set up kubernetes by following that guide in a profession scenario. It led me to discover <code>kubeadm</code> which gave me a way to bootstrap the cluster nodes in one command.</p> <p>I used this newly found tool to then set all the infrastructure up with Cloudformation, running the tool during the init of the EC2 instances via UserData. I successfully got a cluster running and then tried to use Helm to install “charts” to get a valheim server pod running.</p> <p>Using helm got a bit messy, and a bunch of pods were crashing, and to be honest I had no idea why. My hypothesis at the time was that the process of pushing YAML to kube via helm and kubectl was fragile and that it was running into issues with state becoming corrupted or partially deployed.</p> <p>Finding myself frustrated, I took a break to think about what my next approach would be.</p> <p>I had a friend tell me about his setup where he doesn’t run any helm commands against the cluster, but instead uses it to produce kubeconfigs as build artifacts which are then ingested via GitOps.</p> <p>I also started to remember a recommendation to use Talos Linux from another peer so I decided to see what that was about. It sold this idea of an immutable kubernetes cluster which supposedly would prevent the kind of state corruption that I thought I was running into.</p> <p>At this stage I decided to completely pivot, use Talos Linux, and switch to Pulumi instead of Cloudformation for the infrastructure even though it would cost me some time in the learning process.</p> <p>I quite enjoyed Pulumi; it feels like a type-checked infrastructure, which is cool. I used the golang SDK.</p> <p>After a bunch of troubleshooting and looking at logs of pods, and feeding those logs into Gemini, I discovered that there was a bootstrap dependency issue where other pods like Argo required that AWS CCM was setup before it would work properly.</p> <p>After this, it was pretty smooth sailing. I could add CRDs and charts to my gitrepo and argo would pick them up and provision pods quickly. I started to thinkabout how to platformatize everything that I’d built but I realised that thiscan become quite subjective, and so for this article I won’t go into that atall, but the options that I was aware of were tools like KubeVela, Crossplane,and Backstage.</p> <blockquote class="warning"> <p class="alert-title"> <i class="icon"></i>Warning</p> <p>Still writing this up</p> </blockquote> <iframe class="youtube-embed" src="https://www.youtube-nocookie.com/embed/V8iT_2YHtns" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen> </iframe>