Automating MySQL Backups with Cron and mysqldump
Automate enterprise MySQL backups using cron and mysqldump. Learn zero-downtime transactional dumping, streaming compression, and retention scripts.
Databases & Performance
A Guide to Linux Network Troubleshooting Commands (ip, ss, nc, nmap)
Diagnose packet drops, socket exhaustion, and firewall latency on Linux. Master ip, ss, nc, and nmap with production benchmarks and kernel configs.
Linux File Permissions Explained: chmod, chown, and ACLs
Master Linux file security across traditional UGO permissions, ownership models, and POSIX ACLs. Learn exact chmod, chown, and setfacl production patterns.
Managing Multiple PHP Versions with PHP-FPM and Nginx
Master multi-version PHP architectures with Nginx and PHP-FPM. Learn UNIX domain socket isolation, virtual host routing, and kernel performance tuning.
How to Configure Let’s Encrypt Wildcard Certificates with Certbot
Configure Let’s Encrypt wildcard SSL certificates with Certbot using DNS-01 validation. Automate zero-touch renewals across multi-tenant Linux stacks.
Monitoring Server Health in Real-Time with Netdata
Master Netdata installation on Linux for per-second observability. Configure dbengine v2, eBPF telemetry, and secure parent-child streaming architecture.
Self-Hosting Bitwarden (Vaultwarden) on a VPS
Deploy and harden a high-performance Vaultwarden password management server on a Linux VPS. Learn production Docker setups, reverse proxies, and backup routines.
Using sed for Advanced Text Processing in Bash
Master advanced stream editing in Bash with production sed command examples. Optimize text pipelines, manipulate multiline buffers, and automate configs.
Linux Process Management: top, htop, and atop Explained
Master Linux process management with this deep-dive into top, htop, and atop. Learn real-time triage, kernel accounting, and post-mortem analysis.
Setting Up HAProxy for TCP/HTTP Load Balancing
Master enterprise HAProxy on Linux. Deploy high-performance Layer 4 TCP and Layer 7 HTTP load balancing with production sysctl tuning, health checks, and SSL.