Choosing your RHEL 8 clone after the death of CentOS
by Danila Vershinin, July 24, 2021
As CentOS is no longer an RHEL clone, companies seek another free clone of RHEL. What will it be? AlmaLinux, Rocky Linux, or Oracle Linux? We review these choices and give a recommendation.
Read More...PHP CLI: Complete Guide to Running Scripts from Command Line
by Danila Vershinin, December 30, 2018
Learn how to run PHP scripts from the command line, schedule them with cron or systemd timers, configure memory limits, enable OPcache, and debug effectively on Rocky Linux, AlmaLinux, and RHEL.
Read More...NGINX HSTS: Complete Strict-Transport-Security Guide
by Danila Vershinin, August 5, 2018
Learn how to configure NGINX HSTS (Strict-Transport-Security) correctly. This comprehensive guide covers the RFC 6797 specification, preload requirements, redirect patterns for www and non-www domains, common misconfigurations, and how to avoid SSL stripping attacks with verified configurations.
Read More...NGINX SELinux: Fix Permission Denied, 502, and Port Errors
by Danila Vershinin, August 7, 2017
Fix every common NGINX SELinux error: 502 bad gateway from proxy_pass, 403 forbidden on static files, port binding failures, and more. Complete boolean reference table, file context guide, and 11 real-world scenarios with verified one-liner fixes for RHEL, Rocky Linux, and AlmaLinux.
Read More...Clear Disk Space on CentOS, RHEL, Rocky Linux & Fedora
by Danila Vershinin, September 22, 2016
Quick commands to clear disk space on CentOS, RHEL 7/8/9, Rocky Linux, AlmaLinux, and Fedora. Covers log trimming, systemd journal cleanup, YUM/DNF cache, old kernels, Docker, and more.
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