You need a way to apply critical patches with no downtime, and live patching can let you do that. We’ll show how tools like Ksplice, Red Hat’s kpatch and Ubuntu Livepatch patch a running linux kernel so services stay online. This approach applies security updates fast and preserves session continuity, which matters for tight SLAs […]
You want a safer, smarter way to split your network so devices don’t freely talk to each other, and the quickest path is to plan a practical VLAN layout that fits your gear and goals. I’ll explain what a vlan really is—an isolated broadcast domain—and why that matters for device discovery and data flow. We […]
When a service slows or stops, guessing wastes time. We show a clear, repeatable way to get hop-level information so you can find the bottleneck fast. Our approach pairs two simple tools that reveal each hop, timing, and address. That gives actionable route data you can share with upstream providers or internal teams. We’ll cover […]
You want a network that keeps pace as you add services, NAS backups, and multiple virtual machines—and the best switches for home lab choice early on saves hours of rework later. We often see upgrades center on dual 10g sfp+ uplinks, multi‑gig 2.5G access, and PoE to power APs and cameras without extra adapters. In […]
You might see a single core pinned at 100% and wonder why the rest of the system still redraws while actions lag—this article shows how to monitor resource usage at the kernel level and find the root cause. I’ve traced real cases where Deferred Procedure Calls (DPCs) and device interrupts lock a core, making CreateProcess […]
You need a quick way to check kernel version history so you can confirm driver support, security patches, and software compatibility across your operating system. We’ll walk through simple terminal methods — from a fast uname call to listing installed images on Debian and Ubuntu — and explain what numbers like 6.5.0-27-generic actually mean. Along […]
You want to virtualize OpenWRT in Proxmox to run a compact router VM that handles LAN and WAN traffic without extra hardware, and I’ll show a clean, repeatable path to get you there. I’ll walk you through picking the correct x86_64 image, why you must gunzip before resizing or importing, and the practical difference between […]
You need clear insight when your program stalls at the kernel boundary, and system call latency tracking is the tool that turns guesswork into measurable action. We’ll show why timing how long the kernel spends handling system calls yields valuable insights into responsiveness and security. You’ll learn quick diagnostics with strace, lower-overhead probes for production, […]
You need a fast, reliable fix when a recent rollback Linux kernel update leaves your system unstable or unbootable. I know that sinking feeling—graphics glitches, broken drivers, or a server that won’t accept SSH can halt work fast. We’ll show a clear path to get you back to a known-good version without losing future security […]
You feel the pressure when network flows stall, and packet drop monitoring eBPF is the fastest way to surface the kernel’s reason for loss so you can act with confidence. We outline a practical path—attach an ebpf program to a tracepoint, capture events at the linux kernel, and export clear flow-level data to dashboards. This […]
If you want reliable home lab eBPF monitoring that mirrors production observability, you’re in the right place—we’ll show a practical approach that gives kernel-level visibility without changing every application. We use tools like Grafana Beyla and OpenTelemetry to surface network and app behavior directly from the linux kernel. That means quick wins: zero-code visibility for […]
You need reliable kernel maintenance that protects systems without surprise downtime—and we’ll show a practical path to get there. I know how stressful unplanned reboots and missed patches feel, so we focus on a clear, repeatable process that keeps security high and operations steady. We start by mapping a simple strategy: pick LTS or mainline […]
You want a resilient wireless system that just works — and the OpenWRT mesh network setup can give you that control without cloud locks. We’ll walk you through a practical, end-to-end journey that explains which packages to install, how to assign roles for gateway and satellites, and when to use the web interface versus SSH. […]
You want to quickly see which devices are using the most bandwidth and why, so we’ll show how to monitor IoT traffic OpenWRT without turning your home network into a lab. We’ll walk through practical LuCI packages like luci-app-vnstat2 and luci-app-nlbwmon, explain what each package reveals, and point out simple install commands and menu paths. […]
You want repeatable builds without mystery failures, and Auto-Replace OpenWRT Kernel shows where to make that reliable. We’ll point to the files and switches that control per-target versioning so you can stop guessing and start tracking every change. I’ll show the practical bits — where KERNEL_PATCHVER lives, how to keep per-version configs and patches in […]
You want to compile libbpf from source so your bpf programs work reliably on your system and match the kernel and application needs. I’ll walk you through why building the library yourself can give you tighter control over dependencies, better compatibility with the linux kernel, and a reproducible process for development. We’ll start with the […]
You want a simple way to get bpftool working on your system so you can trace network issues and inspect eBPF programs. I’ll show a clear path that covers the apt package route, a build-from-source option, and the basic commands to verify the installation. This saves you time—no guessing about missing headers, PATH quirks, or […]
you want a practical bcc tools eBPF tutorial that helps you fix slow services and blind spots in your system without risky kernel hacks. I know that kernel work can feel scary, so we’ll walk step-by-step and keep things friendly. We’ll show how a tiny ebpf program runs safely in the kernel and how BCC […]
You want clear, practical ways to inspect what runs in your kernel, and bpftool helps you do that without extra code or complex tooling. I’ll show simple, repeatable steps to list programs and maps, read key information, and pin objects for persistence so you can reason about what the system is actually doing right now. […]
You want a clear path for bpf development that doesn’t waste time on guessing. I’ll show how practical workflows, kernel setup, and the right tools help you get a program running reliably across machines. We’ve learned the hard way: keeping kernels, headers, and Clang in sync matters more than clever hacks. I’ll demystify how libbpf […]
you want a quick path to the right kernel option, and make menuconfig should get you there fast without guesswork. I’ll show how to search the Kconfig tree, spot dependencies, and reach the exact menu path for symbols like FRAME_POINTER. The TUI search (press “/”) lists the symbol, its Depends on, who Selected by, and […]
You want control over your system but fear breaking boot or losing drivers — that’s why learning how to enable kernel CONFIG options matters now. I’ll walk you through a clear way to pick a source tree, choose a config, and build a working linux version without wasting time or risking stability. We focus on […]
You want clear backtraces and fast troubleshooting, so I show how to compile kernel with debug symbols and turn cryptic traces into actionable clues. I’ve guided many engineers through building a linux kernel that keeps rich DWARF info, frame pointers, and module matches—so GDB and SystemTap find meaningful names instead of hex addresses. We’ll cover […]
You want your LKML patch etiquette to help your changes land cleanly in the linux kernel without endless back-and-forth. I know the submission process feels heavy at first — documentation, submit-checklist.rst, and driver notes all matter. We’ll show a clear, step-by-step path from local edits to well-formed patches that maintainers can review quickly. Along the […]
You want a clear path to add a configuration option that shows up in menuconfig and builds cleanly without wasted rebuilds. I’ll walk you through a compact, practical approach that ties a tiny example driver into the kernel configuration, so the symbol appears where it should and obeys dependencies. We’ll cover the essential config and […]
Have you ever wished you could see exactly what your Kubernetes system does without changing any code? I’ve been there — frustrated by blind spots and long debug cycles. I want to show a fast path to clear, in-cluster insight that helps developers act now. With a single install on your platform, this open source […]
I often ask: can one lightweight tool give you kernel-level visibility without slowing your systems? We’ll show how a modern runtime approach brings real-time monitoring to where your applications run. I’ll explain how an eBPF-based driver runs verified programs safely inside the linux kernel and streams events to a user-space engine. That stream is evaluated […]
Have you ever wondered how to push high-volume traffic through commodity Linux without buying special hardware? I’ll show you a production-proven, open source solution that brings an L4 balancer into your stack with low overhead and predictable performance. We’ll walk through the moving parts you’ll touch: kernel fast path programs, a user-space control process, VIP […]
Can you safely extend the kernel without writing a monolithic driver? We set the stage for running eBPF on Windows with a clear, practical guide. I’ll explain what it is, why it matters, and how you can add trusted hooks with minimal friction. The Berkeley Packet Filter evolved into a flexible runtime for observability and […]
Can kernel-level programmability really replace heavy sidecars and fragile chains in cloud-native networking? We think it can—and I’ll show you why this shift matters for teams running containers at scale. Built in Go and powered by eBPF inside the Linux kernel, this open-source solution ties networking and security directly to container workloads. That means fine-grained […]
I’ve always loved tinkering with routers, especially when it comes to squeezing the most performance out of them. If you’re using OpenWRT and wondering how to take your network to the next level, enabling eBPF in the kernel might be the solution. eBPF, or Extended Berkeley Packet Filter, is a powerful tool that allows you […]
If you’ve experienced a blue screen with the dreaded “Kernel Security Check Failure” error while running Easy Anti-Cheat (EAC), you’re not alone. I’ve been there, too, and it can be incredibly frustrating—especially when you’re ready to dive into your favorite game. This issue commonly arises due to driver conflicts, corrupted system files, or outdated software. […]
Setting up a home lab can be a rewarding way to learn and test technical skills from the comfort of home. With a home lab, you can experiment with network setups, virtualization, and other IT projects. But to get the most out of a home lab, you need the right Linux distribution. Linux offers the […]
When it comes to programming for databases, choosing the right operating system can make all the difference. As a developer, I’ve always been on the lookout for tools that offer flexibility, security, and solid performance. Linux, a widely respected operating system in the open-source community, often comes highly recommended for database programming. But what makes […]
Contributing to the Linux kernel is both exciting and daunting. It’s the heart of one of the most important software systems in the world, powering millions of devices, servers, and computers globally. But how do you start? How do you go from simply using Linux to actually improving it? The idea of contributing to such […]
It can be frustrating to get the “Failed to Start Load Kernel Modules” error in Linux, especially if you do not know how to fix it. Feel free to relax, though, because this mistake happens a lot and is easy to fix. Even if you do not know much about Linux, this guide will make […]
If you’re like me, you’ve probably encountered some strange and frustrating errors while working with Linux. One that pops up from time to time is the “Missing Kernel Modules Tree for Module” error. It sounds complex, right? Don’t worry. In this guide, I’ll walk you through everything you need to know about this error, why […]
When working with open source software, selecting the right license for your project is one of the most important decisions you can make. The GNU Lesser General Public License (LGPL) is one of the key licenses within the open-source world, but many developers may not fully understand its purpose or benefits. If you’ve ever wondered […]
Debugging a kernel module in Linux might sound intimidating at first, but trust me, it’s much more manageable than it seems. Whether you’re new to kernel development or simply curious about how to fix bugs in your module, this guide will walk you through the essential steps, using simple and accessible tools. We’ll explore various […]
Choosing the right open source software license is a crucial step in the development process. It can shape the future of your project, influence its community, and even impact its commercial potential. But with a myriad of licenses available, how do you make the right choice? How do you navigate the legal language and understand […]
If you’ve spent some time working with Linux, you might have come across the term “kernel module.” If you’re wondering what exactly a kernel module is, how it works, and why it’s important, you’re in the right place. In this guide, I’ll explain everything about kernel modules in a way that’s easy to understand—even if […]
If you’re running CentOS 7 and looking to make the switch to CloudLinux, you’re in the right place. CloudLinux is a great option, especially if you’re managing a web hosting environment. It enhances server stability, security, and efficiency—qualities that are crucial for any hosting business. Upgrading from CentOS 7 to CloudLinux might seem like a […]
If you’ve been using Linux for a while, you’ve probably heard about the Linux kernel. It’s the core of the operating system, managing everything from hardware to software. But like all software, the kernel needs updates to fix bugs, improve performance, and add new features. If you’re a bit nervous about updating your Linux kernel, […]
Polling in Linux is a fundamental technique used in system programming to monitor multiple file descriptors to see if any of them is ready for some class of I/O operation (e.g., reading or writing). In environments where multiple I/O sources need to be managed, such as network servers, user interfaces, or event-driven systems, polling allows […]
