Kamal is unclaimed —

Kamal

Deploy web apps anywhere·kamal-deploy.org

Free plan · Open source

Kamal is an open-source command-line tool for deploying web apps in Docker containers to any servers, from bare metal to cloud VMs, with zero downtime. It offers zero-downtime deploys, rolling restarts, asset bridging, remote builds, and accessory service management. It was originally built for Rails apps but works with any containerizable web app, and auto-provisions a plain Ubuntu server with Docker so it can be deployed to in minutes.

What it's for

Deploying containerized web apps to bare metal or cloud VMsZero-downtime production deploymentsRolling restarts across multiple serversMigrating apps away from managed cloud platforms to owned hardwareRunning the same app across several clouds or a mix of cloud and own hardwareUpgrading/downgrading deployment infrastructure (Traefik to kamal-proxy) with kamal upgrade/downgrade commands

Features 16

Accessory service management
Asset bridging
Auto-provisioning of vanilla Ubuntu servers with Docker
Docker layer caching for faster deployments
Imperative, Capistrano-like command model
kamal upgrade / kamal downgrade commands for migrating between Kamal versions
kamal-proxy for traffic routing (replaces Traefik in Kamal 2)
Multiple destination/environment configurations
Pre-proxy-reboot and post-proxy-reboot hooks
Remote builds
Rolling restarts
Rolling upgrades host-by-host to avoid downtime
Runs all containers in a custom Docker network
Secrets management via .kamal/secrets
Works with any containerizable web app
Zero-downtime deploys

At a glance

free tieropen source

TypeCLI tool

DeploymentInstalled (local)

Company37signals

Integrations

TraefikDocker

Resources

Docs