iiinova — where your digital self keeps evolving

Márk Sági-Kazár @sagikazarmark.com · 02/04/2026

Chilling by Lake Balaton with great coffee (at The Rusty Box), while working on some new iximiuz Labs content.

Márk Sági-Kazár @sagikazarmark.com · 16/03/2026

Kubernetes networking is complex. But that doesn't mean it's impossible to understand. Break it down into smaller pieces and you'll see how it all connects. The next lesson of Kubernetes the Very Hard Way discusses this topic: labs.iximiuz.com/courses/kub... #Kubernetes

000

Márk Sági-Kazár @sagikazarmark.com · 06/03/2026

TLS bootstrapping is how worker nodes securely join a Kubernetes cluster without manually distributing certificates. The next lesson in "Kubernetes the Very Hard Way" covers the entire process of forming a functional cluster from control plane and worker components. labs.iximiuz.com/courses/kub...

010

Márk Sági-Kazár @sagikazarmark.com · 05/03/2026

You've got a control plane and a worker node. Now what? The next lesson in "Kubernetes the Very Hard Way" walks through joining a worker node to the cluster, including TLS bootstrapping and certificate management. Available on iximiuz Labs: labs.iximiuz.com/courses/kub...

010

Márk Sági-Kazár @sagikazarmark.com · 26/02/2026

The final control plane lesson in Kubernetes the Very Hard Way, introducing kube-controller-manager, is out: labs.iximiuz.com/courses/kub... Next stop: assembling a functional cluster!

000

Márk Sági-Kazár @sagikazarmark.com · 19/02/2026

Ever wondered how Kubernetes decides which node runs your pod? The next lesson in "Kubernetes the Very Hard Way" covers kube-scheduler, the component that handles pod placement decisions. Available on iximiuz Labs: labs.iximiuz.com/courses/kub...

010

Márk Sági-Kazár @sagikazarmark.com · 17/02/2026

Pods don't just randomly land on nodes. kube-scheduler evaluates every placement based on resource availability, constraints, and policies. The next lesson in "Kubernetes the Very Hard Way" breaks down how kube-scheduler operates under the hood. labs.iximiuz.com/courses/kub...

000

Márk Sági-Kazár @sagikazarmark.com · 12/02/2026

Have you ever used curl to interact with the Kubernetes API or observed what is stored in etcd after executing kubectl apply? The next lesson in Kubernetes the Very Hard Way explores how kube-apiserver integrates into Kubernetes and operates under the hood: labs.iximiuz.com/courses/kub...

020

Márk Sági-Kazár @sagikazarmark.com · 10/02/2026

If you've followed along with Kubernetes the Very Hard Way, it was worth it, because now the real fun begins: By adding kube-apiserver to the mix, you can learn how the component you interact with daily works under the hood. labs.iximiuz.com/courses/kub...

000

Márk Sági-Kazár @sagikazarmark.com · 05/02/2026

etcd is a highly available, strongly consistent key-value store that supports Kubernetes by storing all its state. The next lesson in "Kubernetes the Very Hard Way," discussing etcd, is available on iximiuz Labs: labs.iximiuz.com/courses/kub...

010

Márk Sági-Kazár @sagikazarmark.com · 03/02/2026

After discussing the worker node components, it's time to move on to the control plane. The next lesson in "Kubernetes the Very Hard Way" begins with a discussion on the control plane components, starting with etcd. labs.iximiuz.com/courses/kub...

010

Márk Sági-Kazár @sagikazarmark.com · 29/01/2026

Did you know you can run pods on a Kubernetes node without a control plane? Or that you can communicate directly with the kubelet via its API? Check out my "Kubernetes the Very Hard Way" course's next lesson that provides an in-depth view of kubelet: labs.iximiuz.com/courses/kub... #Kubernetes

010

Márk Sági-Kazár @sagikazarmark.com · 27/01/2026

Kubelet is the "hands and feet" of Kubernetes: it's the component sitting on every node making desired state a reality. The next lesson of "Kubernetes the Very Hard Way" provides an in-depth view of kubelet. Available on iximiuz Labs: labs.iximiuz.com/courses/kub... #Kubernetes

000

Márk Sági-Kazár @sagikazarmark.com · 22/01/2026

Containerd is the default container runtime for Kubernetes. However, we seldom interact with containerd directly or fully understand the components involved in effectively managing containers.

110

Márk Sági-Kazár @sagikazarmark.com · 15/01/2026

Sessionize says I've been an active speaker last year.

020

Márk Sági-Kazár @sagikazarmark.com · 28/08/2025

Kubernetes 1.34 brings Mutating Admission Policy to beta! To celebrate the occasion, I wrote a comprehensive tutorial on admission control: labs.iximiuz.com/tutorials/k... Check it out if you're interested in a deep dive into Kubernetes admission control. #kubernetes #iximiuz

031

Márk Sági-Kazár @sagikazarmark.com · 21/08/2025

Container runtime, OCI runtime, runtime handler, RuntimeClass What exactly do all these terms mean, and how are they connected? Dive into this tutorial to unravel the complexity of runtimes: labs.iximiuz.com/tutorials/k... #kubernetes #iximiuz

000

Márk Sági-Kazár @sagikazarmark.com · 19/08/2025

Mutating admission policies will graduate to beta in a few weeks: github.com/orgs/kubern... If you find mutating admission webhooks challenging, even for simple mutations, this will be a game changer for you. #kubernetes

011

Márk Sági-Kazár @sagikazarmark.com · 07/08/2025

Although some ingress controllers can be set to use Service ClusterIP or NodePort, most resolve endpoints and route traffic directly to pods. This approach grants the ingress gateway greater control over traffic routing and enables advanced features. #kubernetes #kubequiz

100

Márk Sági-Kazár @sagikazarmark.com · 05/08/2025

How well do you know your ingress controller? Is this how it works? If yes, why? If not, why not? #kubernetes #kubequiz

110

Márk Sági-Kazár @sagikazarmark.com · 31/07/2025

Kubernetes supports, in addition to admission webhooks: - Conversion webhooks for Custom Resources - Authorization webhooks to delegate authorization decisions to an external service #kubernetes #kubequiz

110

Márk Sági-Kazár @sagikazarmark.com · 29/07/2025

Admission webhooks are by far the most common webhooks that Kubernetes supports, but they are not the only ones. Can you guess what other types of webhooks it supports? #kubernetes #kubequiz

021

Márk Sági-Kazár @sagikazarmark.com · 24/07/2025

Although it's still HTTP-based, the Container Runtime Interface (CRI) uses gRPC as its communication protocol. #kubernetes #kubequiz

020

Márk Sági-Kazár @sagikazarmark.com · 23/07/2025

Ever wondered what happens behind the scenes when you run a kubectl command? Explore this playground to experiment with the kube-apiserver in isolation, without any of the controllers: labs.iximiuz.com/playgrounds... #kubernetes #iximiuz

010

Márk Sági-Kazár @sagikazarmark.com · 22/07/2025

Kubernetes has a lot of moving parts. Can you spot the misbehaving one? #kubernetes #kubequiz

Kubernetes cluster with worker node components

010

Márk Sági-Kazár @sagikazarmark.com · 18/07/2025

During request processing in the Kubernetes API server, schema validation occurs before the validating admission controllers are called. #kubernetes #kubequiz

110

Márk Sági-Kazár @sagikazarmark.com · 17/07/2025

Can you identify what's wrong with this image? #kubernetes #kubequiz Bonus: What would you add to this diagram?

010

Márk Sági-Kazár @sagikazarmark.com · 14/07/2025

Documentation reference: kubernetes.io/docs/concep...

000

Márk Sági-Kazár @sagikazarmark.com · 14/07/2025

As of Kubernetes 1.24, the management of the CNI is no longer within the scope of kubelet. Kubelet now delegates this task to the container runtime via CRI. #kubernetes #kubequiz

110

Márk Sági-Kazár @sagikazarmark.com · 14/07/2025

Do you feel like your CI/CD is letting you down? Is onboarding new team members a hassle? Are you constantly wasting time fixing your delivery pipeline? Join my presentation at KCD Warsaw to discover how @dagger.io might help solve these issues.

011

Márk Sági-Kazár @sagikazarmark.com · 13/07/2025

One of the arrows in this picture is incorrect. Can you figure out which one? #kubernetes #kubequiz

310

Márk Sági-Kazár @sagikazarmark.com · 12/07/2025

How well do you know the Kubernetes control plane? What's missing from the image? #kubernetes

110

Márk Sági-Kazár @sagikazarmark.com · 04/07/2025

Kubeadm is not only the de facto tool for installing Kubernetes but also an essential requirement for the CKA exam. Begin your journey by learning how to provision a simple cluster: labs.iximiuz.com/tutorials/p... #kubeadm #kubernetes #CKA #iximiuz

020

Márk Sági-Kazár @sagikazarmark.com · 02/07/2025

With Playgrounds 2.0 on iximiuz Labs, you can now create playgrounds without internet access, allowing you to simulate air-gapped environments. #iximiuz #kubernetes

010

Márk Sági-Kazár @sagikazarmark.com · 26/06/2025

Another playground I've been working on for a while now. Coming soon on iximiuz Labs. #iximiuz #kubeadm #kubernetes

010

Márk Sági-Kazár @sagikazarmark.com · 24/06/2025

Following up on my etcd playgrounds, here is a sneak peek of my latest work: a @containerd.dev‬ playground. As usual, it will be available on @iximiuz.bsky.social labs soon.

141

Márk Sági-Kazár @sagikazarmark.com · 19/03/2025

I'll present a Dagger workshop at Cloud Native Days Romania in May. If you are struggling with CI/CD, join me on May 5th to learn how Dagger can help you.

000