Set up a production-ready self-hosted n8n on Linux: Docker Compose, PostgreSQL 18, automatic HTTPS with Caddy, a first workflow, backups, updates and a security checklist.
A practical, tested checklist for securing Linux on AWS EC2: Session Manager instead of open SSH, IAM roles, IMDSv2, security groups, EBS encryption, SSH hardening, patching, GuardDuty, Inspector and backups.
A tested, step-by-step process to find and fix high CPU usage on Linux: load average, top, mpstat, pidstat, threads, systemd CPU limits and spotting cryptominers.
Kali Linux 2026.2 vs Parrot OS 7.4 compared: base, release model, tools, desktop, privacy, editions and a clear pick for each type of user.
A step-by-step guide to finding every PHP install on your Linux server, patching PHP2Shell (CVE-2026-109618/109619), verifying the fix and checking for signs of compromise.
PHP2Shell is a pair of critical (CVSS 9.2) PHP flaws that allow unauthenticated remote code execution. Here is what happened, which versions are affected, and what to do first.
How to install Nginx from source on RHEL-family Linux: build tools, download and verify the source, configure modules, compile and run with systemd.
How to install Nginx on CentOS Stream, Rocky Linux and AlmaLinux: install the package, open the firewall, manage the service and add server blocks.
How to set up an SSL certificate for Nginx: free Let's Encrypt certificates with Certbot, self-signed certificates with OpenSSL, and a secure TLS config.
What LVM is, its building blocks (PV, VG, LV), how to create an LVM partition step by step, mount it permanently, extend it online and take snapshots.
