Articles by tag: linux-sysadmin

VXLAN MacSec: infrastructure connectivity between DC

Configuring VXLAN tunnel with MacSec for L2 network between cloud providers. Step-by-step commands, tcpdump examples, scaling. Ideal for DevOps and SRE. Study the configuration.

Rsync hardlink for rollback on ext4 Linux

Set up fast system rollback on ext4 without Btrfs/ZFS: rsync + hardlink. Snapshot structure, restore commands, limitations. Instructions for sysadmin.

df du differ: find deleted files Linux

Breaking down why df shows 95% usage, and du — 20%. Step by step: lsof +L1 for search, > /proc/PID/fd/FD for cleanup without restart. copytruncate in logrotate. For sysadmin and DevOps.

qtile widget: disk space prediction

Integrate DiskSpaceAlert into qtile for disk exhaustion forecast by trend. Linear regression without numpy, alert colors, full code. For Linux developers.