Guides 11792 Published by Philipp Esselbach 0

This guide walks you through building a rock‑solid high‑availability cluster for MariaDB by combining block‑level replication with DRBD and the orchestrator Pacemaker. It begins with prerequisites—two identical CentOS 8/9 or Ubuntu 22.04 nodes, root access, and a heartbeat network—then details installing and enabling drbd, pacemaker, corosync, and pcs on both machines. The core steps involve creating a synchronous DRBD resource file, formatting the shared device, mounting it for MySQL, installing MariaDB on each node, grouping the database service with its storage in Pacemaker, adding fencing to avoid split‑brain scenarios, and testing failover by stopping the database or shutting down a node. Finally, the article highlights common pitfalls such as disk size mismatches, blocked Corosync ports, unsynchronized clocks, and driver issues, reminding readers that proper fencing and network reliability are essential for keeping data safe during outages.

Guides 11792 Published by Philipp Esselbach 0

The article explains how to install Spotify on Ubuntu 20.04 by offering three distinct methods—Snap, Flatpak, and a classic Debian package—and invites users to pick whatever fits their workflow best. It walks readers through the Snap installation, noting that the snap pulls the latest official build straight from Spotify’s servers and isolates it from other system components for an effortless setup. 

Guides 11792 Published by Philipp Esselbach 0

The guide walks you through moving a Devuan 3.1 installation to the newest stable release Chimaera (4.0) by outlining practical steps and precautions. It begins with backing up personal data, then updating and fully upgrading the current system before editing `sources.list` to point at the Chimaera repositories—an essential move that prevents dependency headaches. After running a dist‑upgrade and cleaning unnecessary packages you verify the new release via `/etc/devuan-release`, reboot, and monitor for hardware driver issues or bootloader quirks that may require reinstalling custom utilities. The article emphasizes using only native `apt` tools, avoiding complex scripts, and reminds readers to check logs such as `dmesg` for any firmware problems after the update.