Tech Couch

A Comfy Corner for Software, Security, Cloud, and AI

Written by engineers, not ai

server admin

Building an OPNsense environment on KVM

Easy setup for test sandboxes and production workloads alike

Using PostgreSQL as a MongoDB drop-in replacement with FerretDB

Combining MongoDB queries with reliable PostgreSQL storage

Understanding hyperconverged infrastructure

...and how it compares to real cloud stacks

Practical wget use cases

From downloads to web automation

Getting started with KVM and virsh

From zero to a running vm without tripping over errors

Modern backup management with restic

Reliable backups from storage to recovery

Upgrading to the next linux debian release

From bookworm to trixie without the headache

Automating SSL certificates for web servers with certbot

Enabling painless traffic encryption for free

Automating backups with ansible

Confident backup automation from creation to recovery

How attackers hide backdoors in web servers

Understand and detect post-exploitation changes