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.
Author
Munaf Sheikh
I’m an open-source enthusiast and web hosting specialist who builds on raw Ubuntu servers and NGINX, with nothing in the stack I didn’t put there myself. I’ve helped Fortune-listed companies deploy their platforms/applications and still work with several of them. I assess new tools, technologies tune stacks until they run lean, and write up what works here.
Articles by Munaf Sheikh
85 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.
Email
How to Set Up a Postfix Relay for Application Email on Ubuntu
Set up a locked-down Postfix relay on Ubuntu 24.04 that accepts mail only from your own applications, authenticates to your mail provider over TLS, and logs every message.
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.
WordPress
How to Fix Allowed Memory Size Exhausted in WordPress
Read the memory error, check the limit the web request actually gets, raise it for the right pool, and find the plugin or task that uses the memory.
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.