Tutorials
Nginx Performance Tuning on a VPS
Tune Nginx for production traffic on a Linux VPS. Covers worker processes, compression, caching, HTTP/2, TLS optimization, kernel sysctl, and benchmarking with wrk.
Docker Log Rotation: Stop Logs from Filling Your VPS Disk
Docker's default log driver stores unlimited data. A single busy container can fill a 50GB VPS disk in days. This tutorial configures global log rotation, per-service Compose overrides, automated cleanup, and disk usage monitoring.
Secure Your AI Agent Server: Sandboxing, Firewalls, and Monitoring
AI agents execute arbitrary actions, consume unpredictable resources, and process untrusted input by design. This guide maps each threat to a concrete Linux control.
How to Use Vim on a Linux VPS
A practical Vim tutorial built around real server administration tasks. Learn modes, navigation, editing, search and replace, splits, .vimrc configuration, and workflows for editing Nginx, SSH, and Docker Compose files over SSH.
How to Use GNU Screen on a Linux VPS
Learn GNU Screen from installation to daily use. Manage sessions, split regions, configure .screenrc, and keep processes running after SSH disconnects on Debian 12 and Ubuntu 24.04.
SSH Hardening on a Linux VPS: Complete sshd_config Security Guide
Lock down SSH on your Debian 12 or Ubuntu 24.04 VPS. Ed25519 key generation, sshd_config hardening, ProxyJump bastion setup, cipher hardening, and ssh-audit verification. Tested on Debian 12 and Ubuntu 24.04.