Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up take a system snapshot with timeshift on Trixie leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Trixie freeze. Follow each step carefully and the […]
VLAN tagging using the IEEE 802.1Q standard allows a single physical network interface to carry traffic for multiple isolated networks simultaneously. Each VLAN is identified by a numeric tag (1–4094) inserted into Ethernet frames, and the operating system presents each tagged VLAN as a separate logical interface with its own IP address and routing table. […]
Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up configure the grub bootloader on Trixie leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Trixie freeze. Follow each step carefully and the resulting configuration […]
Introduction This guide explains how to Set Resource Limits with limits.conf on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install with […]
Pacemaker is a high-availability cluster resource manager that, combined with the Corosync messaging layer, enables automatic failover of services between cluster nodes. When a node or service fails, Pacemaker detects the failure and restarts the affected resources on a surviving node, minimising downtime. This tutorial builds a two-node active/passive HA cluster on RHEL 9, configuring […]
Introduction How to Configure cgroups v2 on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. This […]
NIC bonding combines multiple physical network interfaces into a single logical interface, providing link redundancy, increased throughput, or both — depending on the bonding mode selected. On RHEL 9, NetworkManager is the canonical tool for managing bonded interfaces, replacing the older ifcfg scripts. This tutorial covers creating a bond with nmcli, adding slave interfaces, assigning […]
Introduction This guide explains how to Tune the Linux Kernel with sysctl on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install […]
ZFS (Zettabyte File System) delivers enterprise-grade data integrity features including checksumming, copy-on-write snapshots, built-in RAID, and efficient replication — without requiring a separate volume manager. Although ZFS is not included in RHEL 9’s default kernel, the OpenZFS project provides DKMS-based packages that work reliably on RHEL 9. This tutorial covers installing OpenZFS, creating pools and […]
Introduction How to Configure Swap Space on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. This […]
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