7f15fd143f
Adds: - `kamal upgrade` to upgrade all app hosts and accessory hosts - `kamal proxy upgrade` to upgrade the proxy on all hosts - `kamal accessory upgrade [name]` to upgrade accessories on all hosts Upgrade takes rolling and confirmed options and calls `proxy upgrade` and `accessory upgrade` in turn. To just upgrade a single host add -h [host] to the command. But the upgrade should run on all hosts, not just those running the proxy. Calling upgrade on a host that has already been upgraded should work ok. Upgrading hosts causes downtime but you can avoid if you run multiple hosts by: 1. Implementing the pre-proxy-reboot and post-proxy-reboot hooks to remove the host from external load balancers 2. Running the upgrade with the --rolling option **kamal proxy upgrade** 1. Creates a `kamal` network if required 2. Stops and removes the old proxy (whether Traefik or kamal-proxy) 3. Starts a kamal-proxy container in the `kamal` network 4. Reboots the app containers in the `kamal` network **kamal accessory upgrade [name]** 1. Creates a `kamal` network if required 2. Reboots the accessory containers in the `kamal` network A matching `downgrade` command will be added to Kamal 1.9.
Kamal: Deploy web apps anywhere
From bare metal to cloud VMs, deploy web apps anywhere with zero downtime. Kamal uses kamal-proxy to seamlessly switch requests between containers. Works seamlessly across multiple servers, using SSHKit to execute commands. Originally built for Rails apps, Kamal will work with any type of web app that can be containerized with Docker.
➡️ See kamal-deploy.org for documentation on installation, configuration, and commands.
Contributing to the documentation
Please help us improve Kamal's documentation on the the basecamp/kamal-site repository.
License
Kamal is released under the MIT License.