Saya makin sering ketemu fenomena lane hogger di jalan tol maupun di jalan umum biasa. Mobil jalan “anteng” di lajur kanan, kecepatan pas-pasan, dan kita yang datang dari belakang jadi deg-degan sendiri. Bukan karena mau ngebut, tapi karena ritme jalan tol dan sepit itu seperti punya bahasa tak tertulis, kanan itu ruang mendahului, bukan ruang… Continue reading
When people compare MariaDB and PostgreSQL, most focus on performance, indexing, or JSON support. But beneath those metrics lies a deeper question, one about freedom patterns and how open-source software evolves when power, profit, and community intersect. This is not just a database comparison, it’s a story about two philosophies that shaped how open source… Continue reading
A practical guide for a 3-node replica set MongoDB replica sets do not have a permanent “master.” MongoDB uses the term PRIMARY, and the PRIMARY can move after elections (restart, network hiccup, maintenance). If your PRIMARY has shifted to a replica node and you want it back on your preferred “master” server, the right approach… Continue reading
To install MariaDB on Debian 13 (Trixie), follow these steps (same rhythm as my Debian 12 guide, but updated for Debian 13). Debian 13’s repo package is currently mariadb-server (1:11.8.3-0+deb13u1). (Debian Packages) 1. Update Package Index Start by updating the package index to ensure your system has the latest information on available packages. (Optional but… Continue reading
If you’ve ever had a small Debian server that technically is still alive, ping works, uptime is fine, but SSH becomes painfully slow and your apps feel like they’re moving through syrup, there’s a good chance you’ve met the quiet villain, disk swap. Linux is incredibly smart about memory management, but on machines with limited… Continue reading
Production has a very specific kind of silence. It’s not the calm silence of a system that’s healthy. It’s the suspicious silence of a system that hasn’t complained yet. Nginx still serves pages. Your API still returns 200. The business dashboard looks green enough to lull everyone into optimism. But you can feel it, response… Continue reading
Ketika demokrasi diparkir rapi, dan “magis”, dan akhirnya tidak pernah sampai ke meja pemilihan. Saya kebetulan alumni Kolese Gonzaga angkatan delapan (8), yang lulus tahun 1997. Kalau kalimat itu saya tulis di awal, itu bukan sekadar penanda umur dan generasi, lebih seperti “alamat batin”, karena Gonzaga (dan tradisi Jesuit yang jadi fondasinya) meninggalkan semacam sidik… Continue reading
Overview At 02:04:43 UTC, 7 November 2025, our Wazuh SIEM raised a critical level-15 alert, Rule 31168, “Shellshock attack detected” This alert originated from an Nginx access log on agent, proxy-sg2-deb-12-pro-proxy-xxxx (IP 1xx.xxx.xxx.xxx). The source of the request was 193.26.115.195 (Netherlands). Wazuh immediately identified the payload as an active Shellshock exploit attempt (CVE-2014-6271). But here’s… Continue reading
Why your logs suddenly show 192.168.255.x — and how to fix it properly When everything sits behind Cloudflare, real-IP handling in Nginx is usually straightforward, trust Cloudflare’s IP ranges, read CF-Connecting-IP, and $remote_addr becomes the actual visitor’s address. That simplicity disappears the moment you introduce a Linode NodeBalancer in front of your server. Suddenly your… Continue reading
When you increase a Linode Block Storage volume’s size in the Cloud Manager, the added capacity doesn’t automatically appear inside your Linux system. You need to let the kernel detect the change and then expand the filesystem so it can use the new space. Previously I create article by umount firts, this one no need… Continue reading