DevOps & Infrastructure

Use fuser to identify which process owns that unexpected port immediately.

Apache mod_proxy consolidates multiple services on a single port 80, making your dev stack accessible with clean URLs and proper routing.

Block malicious IPs in Linux with iptables - a simple script keeps brute-force attackers from hammering your server.

Bash rsync scripts keep backups and remote MacBook storage in sync via cron - set ssh keys and forget.

Firefox rendering failures for Google ads explain a revenue drop after JBoss upgrade - sometimes the culprit is unexpected.

A massive postfix queue backup teaches lessons in email management - qshape uncovers hidden bottlenecks before they cripple the server.

A server migration brings growing pains but opens the door to future expansion after years of constraints.

Switching from .seam to .html files in Apache-proxied JBoss breaks index pages - a gotcha that directory listings can't solve.