How to Set Up Linux Server Disk Encryption with LUKS

Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering · Jun 13, 2026 · 7m · transcript

In this episode of Linux Server Admin with Fexingo, Lucas and Luna walk through the practical steps for encrypting a Linux server's disks using LUKS (Linux Unified Key Setup). They explain when encryption matters—for portable drives, cloud instances, and compliance—and when it may not. Lucas demonstrates the exact cryptsetup commands for creating a LUKS container, adding a key slot, opening and mounting it, and configuring auto-unlock via a keyfile on a USB stick. They also cover the performance trade-off (typically a 1-3% CPU hit on modern hardware) and how to test it with dd. Luna asks…