I run a side project on a 1GB free-tier VPS. Small box, a few services, nothing fancy.

Last week I spent a session hardening its infra. After each fix I asked the same thing: is it fully fixed now? Will this stop happening? The honest answer kept coming back no, and sometimes the fix itself caused the next problem.

Here is the incident that made me retire that question.

The incident: my monitoring almost killed a healthy server

The setup: