sysadmin Archives - Page 14 of 14

How to Troubleshoot ‘Disk Full’ Error and Manage Disk Space on Linux

March 6, 2026

Linux disk full errors can crash your applications instantly. This guide walks through practical commands to diagnose disk usage, recover space fast from logs, Docker, and caches, and set up monitoring to catch problems before they escalate.

DevOps

Ansible Server Configuration Automation: 6 Months of Production Reality

March 6, 2026

After six months running Ansible in production across multiple Ubuntu servers, here's an honest comparison against Puppet, Chef, and manual scripts — including real pros and cons, recommended project structure, and a working playbook to get started immediately.

Linux

Linux chmod and chown: What 3 Years of Managing 10+ VPS Taught Me About Permissions

March 6, 2026

After managing 10+ Linux VPS instances over 3 years, I've seen sysadmins take two very different approaches to chmod and chown — and only one holds up under pressure. Here's the full breakdown: what works, what backfires, and the exact permission model I apply to every new server.

HomeLab

Best Free Tools for DevOps & SysAdmin in Your HomeLab (2024 Stack)

March 6, 2026

Manual server management breaks down fast when you have more than two machines. This guide covers the best free DevOps tools — Ansible, Grafana, Prometheus, Portainer, Loki, and Netdata — with practical setup examples for your HomeLab.

Networking

How to Set Up WireGuard VPN Server on Linux (Fast & Secure)

March 5, 2026

WireGuard is the fastest, simplest way to run a self-hosted VPN server — far less painful than OpenVPN or IPsec. This guide walks through server setup, key generation, peer configuration, and firewall rules on Ubuntu Linux, from a clean install to a working tunnel.