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How to Stop MongoDB 8.x.x Log Files from Exploding on Debian 12/13

diditho — Thu, 16 Apr 2026 05:45:11 +0000

MongoDB 8.x.x is one of those services that can run quietly for a long time, until one day you check disk usage and realize the log file has grown into something unreasonable. Not because MongoDB 8.x.x is broken, but because the logging behavior is doing exactly what it was told to do, keep writing, keep... Continue reading →

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How to Upgrade Wazuh on Ubuntu 24.04 and Fix a wazuh-manager Timeout During the Process

diditho — Tue, 31 Mar 2026 07:59:50 +0000

Upgrading Wazuh on Ubuntu 24.04 can look successful at first, only to stall at the final step when wazuh-manager fails to complete its post-install process. In this guide, I walk through a real upgrade from Wazuh 4.13.1 to 4.14.4, explain why the dashboard may still load while the API remains unavailable, and show how a simple systemd override can allow the manager to start cleanly and complete the upgrade.

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How to Sync Only MariaDB Users and Passwords from Master to Slave

diditho — Mon, 16 Mar 2026 06:03:43 +0000

Sometimes I want a MariaDB slave to have the same user accounts and passwords as the master, but I do not want it to inherit the same permissions. This is common when the slave is used for reporting, internal access, standby, or a limited failover role. The accounts may need to match, but the grants... Continue reading →

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Moving a MariaDB Database Between Servers (The Simple Way)

diditho — Fri, 13 Mar 2026 03:20:48 +0000

Sometimes the hardest problems in infrastructure are actually the simplest ones. Not because they are complicated, but because we forget the exact commands when we need them. Migrating a MariaDB database from one server to another is one of those things. You’ve done it many times, but when you need it again six months later,... Continue reading →

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Docker SFTP Port Works on localhost but Times Out from Outside (Debian 12 + ferm + Linode NAT)

diditho — Tue, 03 Mar 2026 07:37:49 +0000

I hit a classic “it must be Docker” moment. This post documents what was actually happening and the minimal, correct fix. The setup Symptom, “Local open, remote timeout” On the server: Everything looked correct: Docker was listening on 0.0.0.0:22222, and localhost could connect. But from outside, connections to port 22222 timed out. First principle, don’t... Continue reading →

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Reseeding MariaDB Master–Slave Replication (Non-GTID) While the Master Stays Online

diditho — Thu, 12 Feb 2026 12:13:54 +0000

MariaDB replication breaks at the worst possible time, right when you need the database to be calm, predictable, and boring. If you’re running classic (non-GTID) master–slave replication, the fastest way out of a messy drift is usually not to “skip errors” or “restart services” endlessly. The cleanest recovery is to reseed the slave from a... Continue reading →

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Install Node.js 24 & PM2 on Debian 13, Including Log Rotation

diditho — Fri, 23 Jan 2026 06:37:49 +0000

If you’re running Debian 13 for a production server, Node.js 24 + PM2 is a practical setup, simple deployment, easy process management, and predictable restarts. Below is a production-friendly installation guide, including PM2 log rotation. 1. Install Node.js 24 (via NodeSource) Update packages and install prerequisites: Add the NodeSource GPG key: Add the Node.js 24... Continue reading →

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Debugging Slow Debian 13 on WSL, When a Single Ping Tells the Whole Story

diditho — Sat, 17 Jan 2026 11:02:54 +0000

Sometimes the simplest command reveals the truth hiding beneath the surface. My Debian 13 environment inside WSL had been unusually slow for days. Not broken, not throwing warnings, but hanging on apt update long enough for me to lose patience. “Reading package lists…” would freeze, repository connections took forever, and every small task felt like... Continue reading →

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MariaDB vs PostgreSQL, Two Open-Source Patterns of Freedom

diditho — Sat, 10 Jan 2026 12:30:45 +0000

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 →

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Make MongoDB “Master” Primary Again on Debian 12 (MongoDB 8)

diditho — Fri, 09 Jan 2026 17:06:16 +0000

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 →

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