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Adnan Selimovic

Systems engineer passionate about software and infrastructure. Curious about scaling up applications, distributed systems, and overseeing software go from code to usage in production. Also automation.

📍 Sarajevo https://qdnqn.com

How to do guest writing?

Guest writing gives you an opportunity to market and represent yourself as a professional writer in any niche. Like many of us who are just starting in content creation and blogging, I was unaware of how to start and navigate this journey. My advice is just to start. Let me

Hardening security on Kubernetes with KubeArmor

KubeArmor provides runtime protection on Kubernetes using policies. It uses eBPF and Linux Security Modules (LSM). It can restrict any malicious or unwanted behavior by cluster uses. As you can see the Kubearmor is placed between the kernel and running pods. In this placement, it can filter out restricted actions.

How to start learning DevOps?

In the first post of the series, we've looked over the theory part of the DevOps world. Since we're familiar with the terms we can dive deeper this time. So where are the goodies? Let's try to answer a few questions you may be having. What is expected from the

Creating Kubernetes cluster with k3s on multipass

Setting up a Kubernetes lab is often a necessity in my daily work. Testing various software, understanding how to run it, configure it, learning new features, and so on. It's part of the job. Running directly on the cloud could raise costs and using local development tools is a choice

Debugging on Kubernetes

Even with the best designs, patterns, and processes implemented, there is a tendency for errors to show up and crash the party. If you are coming from another field or just starting up with Kubernetes - there would be needed effort and time to pass so that the shift in

Cdk8s instead of Helm for Kubernetes

Cdk8s is an open-source software development framework for defining Kubernetes applications and reusable abstractions using familiar programming languages and rich object-oriented APIs. cdk8s apps synthesize into standard Kubernetes manifests which can be applied to any Kubernetes cluster. Cdk8s definitions are written as software in one of the supported programming languages.

Ubuntu sleep problem on Thinkpad with the Nvidia graphics card

Ubuntu on the Thinkpad is known for issues with the Nvidia graphics card. Tearing, Sleep/resume problems, browser video graphics, etc. There were various attempts to upgrade the user experience using mentioned setup. Nvidia drivers got better over time, the Xorg server got a lot of upgrades, and replacement started

Kubernetes storage and CSI drivers introduction

About Kubernetes storage Kubernetes provides the persistent storage using volumes. Entities on the Kubernetes, would you like to call 'em objects, are represented via YAML specification. You define the object as a YAML file, holding the specification you need, and apply it to the cluster. Kubernetes API handle the incoming

How to configure Traefik on k3s?

Traffic engineering with Traefik on k3s distribution of KubernetesTraefik is one of the most popular ingress controllers on Kubernetes. Traefik v2 brought some major changes in the usage of the controller itself. It brought the approach of heavy usage of Custom Resources on Kubernetes to provide reconfigurability and expanded fields

How to start learning DevOps?

What is the DevOps? (Theory part) You can read every day about DevOps in almost every type of media. The term DevOps has become familiar now and is very established in the Job market. But the DevOps practices are still young and are evolving. Every company defines the DevOps roles,