A complete step-by-step guide to compiling your own Linux kernel — from downloading the source, through configuration, to installation and reboot.
Linux SysRq Key — How to Rescue a Frozen Server
How to use the Magic SysRq Key for emergency reboot of a frozen Linux server. The REISUB sequence, sysctl configuration, and essential SysRq commands.
Kdump — How to Capture and Analyze Linux Kernel Crashes
How to configure kdump to capture memory dumps after a Kernel Panic and analyze them with the crash tool. Setting up kexec, crashkernel, and vmcore analysis.
LVM on Linux — Flexible Disk Management Guide
What is LVM (Logical Volume Manager) on Linux? Creating physical volumes, volume groups, and logical volumes, snapshots, thin provisioning, and practical commands.
Linux Kernel Panic — Causes and How to Fix It
What is a Kernel Panic and how to configure automatic system reboot after a crash using the sysctl kernel.panic parameter. Values and use cases for servers.
Linux OOM Killer — The Process Assassin You Need to Know
What is the Linux OOM Killer, how does it choose which process to terminate, and how can you protect critical services from being killed when memory runs out.
make oldconfig — How to Update Linux Kernel Config
How to use make oldconfig to quickly update your Linux kernel configuration when upgrading to a newer version. A practical guide to the Y, M, N options.
menuconfig Search Trick — Jump Directly to Kernel Options
How to use the search feature in make menuconfig to find kernel options instantly and jump to their location in the menu tree.
What Is vmlinuz? The Linux Kernel File Explained
What is the vmlinuz file, where does its name come from, and how does it differ from vmlinux and bzImage? The history and structure of the compressed Linux kernel image.