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!
103 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.
51 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.
18 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
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!
Git tags are crucial for marking important points in your repository's history, such as version releases. But not all tags in Git are created equal. There are two types of tags you can use: annotated and lightweight tags. Understanding the differences between these tags is vital.
Security is a critical aspect of any CI/CD pipeline. As Jenkins often plays a central role in the software development lifecycle, handling everything from building code to deploying applications, it's essential to ensure that it is properly secured.
Kubernetes has emerged as a leading platform for orchestrating containerized applications, providing flexibility, scalability, and resilience. When combined with Jenkins, it enables teams to efficiently manage their CI/CD pipelines, automatically scaling Jenkins agents as needed.
Running the Docker daemon as a non-root user is a key security measure to minimize system risks. This post provides a detailed guide on why it's important, how to configure Docker for non-root operation using Rootless Mode, and how to troubleshoot common issues.