Notes and howtos

Tailscale
Ssh
Networking
Linux

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Tailscale SSH fails with "tailnet policy does not permit access"

20th June, 2026

Openvms
Legacy
Modernization
Architecture

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Modernization usually means rewriting everything wrong

15th June, 2026

Aws
Infrastructure
Startups

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NAT Gateway is eating your AWS bill

10th May, 2026

Aws
Wordpress
Php

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WordPress fleets on AWS are rotting from the database up

27th April, 2026

Security
Microsoft

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Microsoft Authenticator spam notifications won't stop? Here's what actually fixed it

15th April, 2026

Php
Apache
Linux

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Your server is running two PHP versions (and one of them is lying)

24th March, 2026

Cli
Docker

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Stop all running containers in Docker

3rd October, 2020

Docker

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Why Docker?

1st October, 2020