--- title: "Rails 8 Introduces Kamal 2 For Zero Downtime Deployments" url: https://daily.dev/posts/rails-8-introduces-kamal-2-for-zero-downtime-deployments-foozizcgv source_url: https://blog.saeloun.com/2026/07/23/rails-8-kamal-2-deployment-zero-downtime type: article source: "Saeloun" published: 2026-07-23T17:23:15.448Z updated: 2026-07-23T20:20:56.672Z tags: ["devops", "docker", "rails", "kamal"] reading_time: 5 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Rails 8 Introduces Kamal 2 For Zero Downtime Deployments **[Saeloun](https://daily.dev/sources/saeloun)** · 5 min read · 0 upvotes · 0 comments ## Summary Rails 8 ships with Kamal 2 pre-configured, enabling zero downtime deployments to any Linux server without a PaaS. Kamal 2 replaces Traefik with a purpose-built Kamal Proxy that handles automatic SSL via Let's Encrypt, supports multiple apps on one server, and drains in-flight requests during container swaps. New Rails 8 apps get a ready-to-use config/deploy.yml, a production Dockerfile, and a .kamal/secrets file out of the box. Key features covered include improved secrets management with password manager integration, command aliases, fast rollbacks via container switching, and multi-tenant SSL options including Caddy for wildcard certificates. Kamal 2 pairs with Solid Queue, Solid Cache, and Solid Cable to run a full production stack on a single server. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Deploying multiple apps with what's new in Kamal 2](https://daily.dev/posts/deploying-multiple-apps-with-what-s-new-in-kamal-2-xklogizyo) · Honeybadger · 0 upvotes · 0 comments - [Deploying Rails 8 with Kamal on a Single Server](https://daily.dev/posts/deploying-rails-8-with-kamal-on-a-single-server-a3gwyzjhn) · Ruby Flow · 1 upvotes · 0 comments - [Build Your Own Cloud Empire: Hosting Unlimited Rails Apps with Kamal 2](https://daily.dev/posts/build-your-own-cloud-empire-hosting-unlimited-rails-apps-with-kamal-2-wnkntjddv) · Ruby Flow · 1 upvotes · 0 comments --- Tags: [#devops](https://daily.dev/tags/devops), [#docker](https://daily.dev/tags/docker), [#rails](https://daily.dev/tags/rails), [#kamal](https://daily.dev/tags/kamal) [View this post on daily.dev](https://daily.dev/posts/rails-8-introduces-kamal-2-for-zero-downtime-deployments-foozizcgv)