Running a mail server on a VPS: what actually keeps you out of spam
Your mail server works. Postfix starts, the logs look clean, you send a test message to your Gmail — and it lands in spam. Or it just disappears. Noth…
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Install NixOS on Jetorbit
Overview Tulisan ini menceritakan pengalaman saya meng-install NixOS di VPS Jetorbit memakai nixos-anywhere , dideploy dari laptop macOS (nix-darwin).…
Securing a Server in the First 45 Minutes: VPS Hardening Checklist
Whenever I set up a new VPS, I always dedicate my first 45 minutes to essential security steps. This period is a critical window to protect the server…
The Dual-Binary Deployment Stack: Managed Cloud Ergonomics on Bare Metal
Every developer eventually hits the same wall: you write a beautiful, stateless application, and then you burn an entire weekend fighting with ingress…
My VPS Crashed at 3 AM: A Sysadmin's Confession
A Mistake I Made Myself The most expensive mistake of my career wasn't a line of code; it was hitting a key at 3 AM saying, "Alright, this is done." R…
The Complete Developer’s Guide to the Baileys WhatsApp Bot: Setup, Scaling, and VPS Deployment
WhatsApp has become the default operating system for daily communication in regions like India. For modern web platforms—particularly in EdTech, local…
3rd OOM on the VPS: Parallel Builds and a flock Mutex Story
Scene: "the sites are down dude" Wednesday, May 7, afternoon. A message on my phone: "the sites are down dude." Quick check: my own blog (mustafaerbay…
Security Patch on My Own VPS: Hours Stolen from a Client Project
Lessons Learned from a Client Project Sitting at my computer this morning, I was reflecting on an incident from last week and how it impacted my own s…
7.6 GB VPS Swap Fire with Docker: A Kernel Patch Nightmare
Introduction: The 7.6 GB VPS Swap Fire with Docker This morning, as I sat down at my computer, I was met with an unexpected performance drop on one of…
Swap Fire on My VPS: A Nightmare That Started with a Kernel CVE Patch
Sudden Increase in Swap Usage: Symptoms and Initial Findings This morning, when I connected to my server, I wanted to check the system health before s…
What is Coolify? Self-Hosting with Superpowers
🎬 This article is a companion to my YouTube video. Watch it here: Introduction In the last video, we talked about the VPS and why it is a compelling o…
Minimum Viable DSGVO Compliance for Startups
The 5-Minute DSGVO Compliance Checklist for Web Projects DSGVO compliance isn't a legal essay. It's a set of technical and procedural decisions. Here'…
Docker Disk Fire: Root Cause Analysis on My 7.6 GB VPS
While hosting the backend of one of my side projects on a 7.6 GB VPS, I suddenly encountered Docker consuming all the disk space. This is a common pro…
VPS Swap Fire: A Nightmare Started by a Kernel CVE Patch
Last week, precisely on a Monday morning, the "Critical Alert" notifications on my monitor struck fear into my eyes. The systems running on my own VPS…