Latest
Our Health Check Failed and the Deploy Went Live Anyway
A postmortem from our own dogfood run: a failed readiness probe still received traffic. What broke, why two correct parts added up to a bug, and the fix.
Blog
Self-hosting, tested before it is written.
Step-by-step guides where every command was run on a real build. Output is pasted, not invented, and each post says which version and date it was tested on.
Roll Back a Failed Docker Deploy Without Downtime
Ship a broken release on purpose, watch your users stay on the old version, then roll back with one command. Real commands, real output, self-hosted.
Install a Self-Hosted PaaS on Your Own Server in Five Minutes
One curl command, one setup token, one sample app. The full Levelrail install on a fresh Linux server, with the checks and the fixes.
Restart a Docker Container Without Downtime
Restart a Docker app with one command and zero failed requests, then see what a plain stop and start costs. Real output from a self-hosted run.
Update the PHP Docker Image Security Patch, No Downtime
Move a Dockerized PHP app from 8.4.26 to the 8.4.27 security release with zero failed requests, pin the image by digest, and see a bad update get refused.
Docker Container Restarting in a Loop: 5 Causes, Fixed
Five real reasons a Docker container keeps restarting, each reproduced with its exit code, the command that finds it and the fix. Then the same crash on Levelrail.
Node Graceful Shutdown in Docker: Handle SIGTERM on Deploy
Why docker stop takes 10 seconds on a Node app and resets in-flight requests, and the handler that fixes it. Measured exit codes, timings and deploy runs.
Series, 4 parts
Deploy and operate Levelrail
A path from a fresh Linux server to a safe release process: install Levelrail, ship a broken release on purpose and roll it back, then restart an app with no dropped requests.