Tag: linux

Rootless Docker: Tips, Gotchas & Fixes

Rootless Docker tuning deep-dive: network drivers, env vars, port drivers, cgroup delegation, and real troubleshooting — anchored to Docker Engine 29.x.

Network Booting Diskless Nodes with iPXE

Boot any OS over the network using iPXE — covers dnsmasq proxyDHCP setup, HTTP boot menus, Talos OS live boot, and the quick netboot.xyz shortcut method.

Dell R720 vs HP DL380 G9: Used Server Knife Fight

Dell R720 or HP DL380 G9 for your home lab? We compare CPU generation, power draw, fan noise levels, iDRAC vs iLO, and which used pizza box wins the fight.

ddrescue vs TestDisk vs PhotoRec

Drive is dying. Which tool do you reach for? ddrescue clones, TestDisk repairs partitions, PhotoRec carves files. They're a workflow, not rivals.

Borg vs Duplicacy: Dedup Backup Wars

Borg is open-source classic with SSH targets. Duplicacy has lock-free multi-source magic but commercial GUI. Here's which backup tool to pick.

KVM/QEMU/libvirt: CLI Workflows

virt-manager is fine, but real homelab automation lives on the command line. virt-install, virsh, cloud-init — provision VMs in seconds, not click-by-click.

fd vs find: Rust Speed vs POSIX Power

fd has sane defaults, parallel walking, and respects .gitignore. find is gnarly but ships everywhere. Here's when each one wins.

Linux Namespaces from Scratch

Containers are just namespaces and cgroups in a trench coat. Build one yourself with unshare and nsenter — no Docker required. Here's what actually happens.

rclone vs Restic: Sync vs Backup

rclone copies and syncs files to cloud storage. Restic does deduplicated encrypted snapshots. Confusing them costs you restores at 2 AM.

mtr vs traceroute: Packet Loss

traceroute lies. mtr tells the truth. Here's how to read packet-loss reports like an oncall engineer and stop blaming your ISP for the wrong hop.

ZFS Encryption vs LUKS

Native ZFS dataset encryption vs LUKS under your pool — which layer to encrypt at, performance trade-offs, key management, and raw send/recv.

iperf3 + nload: Network Diagnosis

Your gigabit link drops to 200 Mbps and you don't know why. iperf3 measures throughput honestly, nload visualizes traffic — together they find the bottleneck fast.