ulimit on Linux: Fix “Too Many Open Files” (nofile, limits.conf, systemd)
Increase open file limits on Linux: ulimit -n, soft vs hard limits, /etc/security/limits.conf, systemd LimitNOFILE=, prlimit, and verify…
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Linux tail -f Command: Follow Log Files Live (nginx, apps, journalctl)
Use tail -f on Linux to follow log files in real time: -n line count, grep while tailing,…
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Certbot Deploy Hook Shell Script: Reload Nginx After renew (Let’s Encrypt)
Use a Certbot deploy hook shell script on Linux to run nginx -t and reload only when certificates…
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How to Install Nginx on Linux: Server Blocks, Static Sites and proxy_pass Basics
Install Nginx on Ubuntu and AlmaLinux: package install, sites-available layout, first server block, nginx -t, serve static HTML,…
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How to Install WordPress on Ubuntu with Nginx, MariaDB and PHP (Complete LEMP Guide)
Complete WordPress install on Ubuntu: prepare VPS, install Nginx MariaDB PHP-FPM, create database and user, deploy files, Nginx…
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How to Install PHP on Linux (8.x, php-fpm, Extensions and Nginx)
Install PHP on Ubuntu and AlmaLinux/Rocky: php-fpm, common extensions for WordPress, version checks, Nginx fastcgi_pass, and disable phpinfo…
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Nginx 502 Bad Gateway: Causes and Fixes on Linux (Upstream, PHP-FPM, Timeouts)
Fix Nginx 502 Bad Gateway on Linux: check upstream is running, proxy_pass and fastcgi_pass, error.log messages, PHP-FPM pools,…
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Nginx vs Apache: Which Web Server Should You Use on Linux?
Compare Nginx and Apache on Linux: performance models, .htaccess vs server blocks, PHP-FPM, reverse proxy, TLS, and when…
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Fail2ban Nginx Jail: Block Abusive IPs (HTTP 404/401 floods and scanners)
Configure Fail2ban jails for Nginx: install filters for 404/401 abuse and bad bots, set findtime and bantime, test…
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Kubernetes Ingress with NGINX and TLS (cert-manager) Explained
Expose Kubernetes apps with an NGINX Ingress controller: install, host and path routing, TLS via cert-manager, annotations and…
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