kamal

Automate Rails application deployment with Kamal commands and configuration.

3|Updated Jan 9, 2026

Search Tags:#automation #workflow #deployment #rollback #secrets #rails #kamal

Ready to run

npx skills add https://github.com/bastos/ruby-plugin-marketplace --skill kamal-bastos

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Please help me install this Agent Skill.
Skill: kamal
Source: https://github.com/bastos/ruby-plugin-marketplace/tree/main/plugins/ruby-on-rails/skills/kamal
Command: npx skills add https://github.com/bastos/ruby-plugin-marketplace --skill kamal-bastos

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Deploying Rails apps can be error-prone and hard to reproduce across environments. Kamal provides a repeatable, safe deployment workflow to standardize releases.

Core Features & Use Cases

Initialize deployment environments with kamal init to create config/deploy.yml and .kamal/secrets.
Manage deployments and rollbacks through kamal setup, kamal deploy, and kamal rollback [VERSION].
Keep secrets secure in .kamal/secrets or environment variables, with merged config visibility via kamal config.

Quick Start

Install Kamal, initialize deployment with kamal init to create config/deploy.yml and .kamal/secrets, then run kamal setup and kamal deploy for your first release.

Frequently Asked Questions about kamal

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I automate Rails application deployment to ensure repeatable and safe releases?▼

Automating Rails application deployment is achieved by configuring deploy.yml and executing kamal setup followed by kamal deploy. This standardizes releases across servers to ensure repeatable, safe deployments without manual intervention.

What is the best way to initialize a Kamal deployment environment for a Rails app?▼

The best way to initialize a Kamal deployment environment is by running kamal init. This command automatically generates the required config/deploy.yml file and .kamal/secrets file to establish your baseline deployment configuration.

How do I manage and verify secrets for Kamal deployments?▼

Managing secrets for Kamal deployments involves storing them securely in .kamal/secrets or environment variables. You can verify merged configuration visibility by running kamal config to ensure all secrets are correctly loaded before deployment.

Can I rollback a Rails deployment to a previous version using Kamal?▼

Yes, you can rollback a Rails deployment to a previous version using Kamal by executing kamal rollback [VERSION]. This command safely reverts your application to a specified prior release across all configured servers.

Does Kamal require Docker for deploying Rails applications across servers?▼

The metadata confirms Kamal standardizes Rails releases across servers and manages deployment workflows, but does not explicitly state Docker as a required dependency. It focuses on deploy.yml configuration and kamal setup commands for execution.

Why are my Rails deployments error-prone and hard to reproduce across environments?▼

Rails deployments are often error-prone due to inconsistent manual configurations across environments. Using Kamal provides a repeatable, safe deployment workflow to standardize releases and eliminate environmental discrepancies.