Servers
How to Run Ollama on a CPU-Only VPS as a Private LLM API
Run Ollama on a CPU-only Ubuntu 24.04 VPS, size the model to the RAM, cap concurrency, and publish the API only behind HTTPS and a password.
Servers
Linux server administration for hosting: memory, CPU and disk diagnostics, Nginx, PHP-FPM, databases and capacity planning.
22 articles
Servers
How to Build a WireGuard Tunnel Between Two VPS Servers on Ubuntu
Build an encrypted WireGuard tunnel between two Ubuntu 24.04 VPS servers, lock the firewall to one UDP port, enable it at boot, and diagnose a handshake that will not complete.
Servers
How to Size Apache Event MPM and PHP-FPM From Measurements
Measure the real memory per Apache process and PHP-FPM worker, split the budget between them, keep MaxRequestWorkers and pm.max_children in step, and watch the queue under load.
Servers
How to Back Up WordPress to S3 With Restic on Ubuntu
Back up a WordPress database and its files as encrypted restic snapshots to S3-compatible storage, schedule them with a weekly prune, and prove the backup by restoring it.
Servers
How to Fix 504 Gateway Timeout on Nginx
Read the Nginx and PHP-FPM logs to find the slow request, fix the cause first, and raise timeouts only for the paths that legitimately need them.
Servers
How to Fix Permission Denied (publickey) on Ubuntu SSH
Read the client and server logs to find the real cause of a publickey refusal: the wrong key, the wrong account, or file permissions that OpenSSH rejects.
Servers
How to Install Docker on Ubuntu 24.04 Safely
Install Docker from its official repository, understand why published ports can bypass UFW, bind services to localhost, and prove the result with an external scan.
Servers
How to Fix 413 Request Entity Too Large on Nginx and PHP
Find which layer rejects a large upload, then raise the Nginx, Apache, PHP and application limits in the right order, and test with a real file.
Servers
How to Fix and Mitigate the PHP2Shell Vulnerability on Your Server
PHP2Shell (CVE-2026-109618 and CVE-2026-109619) can allow remote code execution. Find every PHP runtime, patch to the fixed versions, apply the mitigations, and check for compromise.