DevOps, Linux, Life, the Universe, and everything—thoughts and stories from Pavel Dolinin. Don’t forget your towel!
The command-line universe awaits! In this tag, we dive into the world of Linux, the open-source operating system that powers everything from your servers to your smart fridge. Whether you're tweaking configs, mastering Bash, or unleashing the power of the terminal, you’ll find tips, tricks, and tutorials to become a Linux guru. Embrace the penguin, and let’s hack the planet—one terminal command at a time!
104 posts
Git is one of the most popular and widely used version control systems today. Whether you’re a developer or DevOps engineer, Git is an essential tool for managing code, collaboration, and automation workflows. This guide will walk you through the process of installing Git on different operating systems: Windows, macOS, and Linux.
53 posts
The magic behind containers! In this tag, we'll explore Docker, the containerization tool that’s changing how we build, ship, and run applications. Whether you’re managing microservices or optimizing your builds, this is your go-to spot for Docker tips, tutorials, and deep dives. From beginner-friendly guides to advanced tricks, you'll learn to containerize like a pro!
49 posts
In the world of automation, Jenkins is the unsung hero wearing a cape made of plugins. Under this tag, you'll uncover the secrets of continuous integration and delivery pipelines, sprinkled with some DevOps wizardry. From setting up your first Jenkins job to orchestrating multi-stage pipelines, it's all about making automation less of a headache and more of a superpower. Prepare for a deep dive into the automation multiverse — where builds run smoothly, and deployment anxiety fades!
46 posts
Welcome to my “Gaming on Linux” corner — where penguins meet pixels and GPUs work overtime just to prove Linux can game. From nostalgic classics to modern shooters, I test, tweak, and sometimes overheat my poor GPU — all in the name of smooth frames, open-source glory, and a bit of chaos.
40 posts
Explore the world of hardware, from cutting-edge devices and components to the systems that power our digital lives. Whether it's server hardware, networking gear, or the latest gadgets, this tag covers the innovations and tools that make modern computing possible. Learn how hardware impacts performance, scalability, and reliability in tech, and discover tips for optimizing your infrastructure.
29 posts
Welcome to the How-tos section! Here you'll find detailed step-by-step instructions on a variety of topics, from setting up services to generating code snippets and troubleshooting issues. These guides are designed to be practical and easy to follow, whether you're a beginner or an advanced user, helping you perform tasks efficiently and with confidence.
19 posts
This is the hub for my personal projects, community contributions, and the tools I’ve crafted along the way. Whether it's open-source code, custom-built utilities, or anything else I’m tinkering with, you’ll find it here. Expect a mix of tech experiments, shared solutions, and the occasional wild idea — all aimed at making life (and code) a little smoother. Think of it as my digital workshop, where I offer back to the community!
17 posts
Because life, much like debugging code, can be absurdly unpredictable. Here, I’ll share tales of misadventures, quirky observations, and those moments where the only logical reaction is a good laugh. Whether it's the frustrations of tech or the everyday quirks of life, this is where we embrace the absurdity. After all, laughter might just be the ultimate fix—better than turning it off and on again.
10 posts
Learn how to write your first Bash function using the name() syntax. This beginner-friendly guide explains function declarations, how they work, why they're useful, and walks through practical examples to help you write cleaner shell scripts.
GitLab Flow offers a streamlined workflow that integrates CI/CD, and issue tracking to support modern software development. It's designed to bridge the gap between development and operations. GitLab Flow simplifies branching strategies and focuses on delivering software quickly and reliably.
Moving Docker's default data directory from /var/lib/docker to a custom location or separate disk not only enhances security but also improves resource management and system stability. In this step-by-step guide, learn how to relocate the directory, update Docker’s configuration.
GitHub Flow offers a more streamlined and lightweight workflow for CI/CD. Created by GitHub, this workflow is designed to fit modern software development practices where speed, agility, and simplicity are paramount. It is commonly used by teams that release updates frequentlyy.
In today's software development environment, ensuring the security of CI/CD pipelines is paramount. One of the most popular CI/CD tools, Jenkins, handles critical tasks such as building, testing, and deploying applications. As a result, it generates extensive logs that can provide insights into it.
By default, Docker containers on the bridge network can freely communicate. In this detailed guide, learn how to restrict inter-container communication using Docker’s icc setting, custom bridge networks, and advanced iptables rules to enhance network isolation and security
GitFlow is one of the most widely used and comprehensive workflows for Git-based development. Introduced by Vincent Driessen in 2010, GitFlow provides a robust branching model that helps teams manage large-scale projects while maintaining efficient and structured development.
Jenkins is a widely-used CI/CD tool, often accessed by multiple users and teams. Given the critical nature of the workflows, ensuring that only authorized users can access and perform specific actions is essential. This is where Role-Based Access Control (RBAC) comes into play.
Managing ulimits is essential for controlling system resources and ensuring containerized applications run smoothly. In this guide, learn what ulimits are, why they matter, and how to configure them correctly in Linux and Docker.
Git tags are very useful for marking milestones, version, and other important points in your code. When managing large projects, tagging can help in maintaining an organized workflow. Integrating tags into automated pipelines can help streamline your development and deployment in software releases.
Jenkins is a widely adopted tool for automating CI/CD pipelines, and it often needs access to sensitive information such as passwords, API tokens, and SSH keys to interact with different systems.
In this hands-on guide, I take you step-by-step through switching my local Docker server to rootless mode. From reconfiguring services to tackling real-world challenges, discover how to transform your Docker environment into a more secure and robust system, even on a home server. Let’s dive in!