I wrote a book on Kamal, deployment tool that's coming to Rails 8
Hi fellow readers of HN, Josef here again[0] with another book :). This time about Kamal. = Background When 37signals released their new deployment tool Kamal[1], I was intrigued since it fits well with my 'keep it simple' deployment philosophy. I slowly adopted the tool and today I deploy all new projects with Kamal. However, I have seen people giving it a go and giving up, because the initial documentation was not enough. So I sat down for a few weeks and wrote Kamal Handbook, the missing manual to Kamal. = What's Kamal? Kamal is an imperative deployment tool. It's basically a successor to…
I wrote a book on Kamal, deployment tool that's coming to Rails 8 launched on April 4, 2024 with 13 votes, #1,030 of 4,347 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
The Kamal Handbook is a comprehensive guide to Kamal, an imperative deployment tool designed as a modern successor to Capistrano for containerized applications. It is written for Rails developers who want to deploy applications using Docker without the complexity of Kubernetes. The handbook addresses gaps in Kamal's official documentation, helping users who struggled with initial adoption. Created by Josef, the guide covers practical deployment workflows for developers building with Rails 8 and beyond.
written from the facts on this page · September 2026
From the sources
The missing manual to Kamal deployment tool by Josef Strzibny
Kamal Handbook is the missing manual for the new Kamal deploy tool which lets you run Docker in production with minimal effort. ❝ I can't recommend Kamal Handbook enough! I had so many unanswered questions after reading the Kamal documentation, and the handbook pretty much answered them all. Great book, great code examples and great explanation of every aspect of Kamal . ❝ This is my first book from Josef after reading a lot of his posts on Twitter (X). I really like the writing and the level of detail of how kamal works . Also taking a little more than 'just deploying' into account is extraordinary. Great work! ❝ As a developer who recently migrated from Heroku, I found the Kamal Handbook…from kamalmanual.com
In the maker’s words, at launch
Hi fellow readers of HN, Josef here again[0] with another book :). This time about Kamal. = Background When 37signals released their new deployment tool Kamal[1], I was intrigued since it fits well with my 'keep it simple' deployment philosophy. I slowly adopted the tool and today I deploy all new projects with…
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