Can kamal-proxy handle redirects from www to apex domain (e.g., www.myapp.com to myapp.com)?

[DaniG2k]

Hi all,

I’m unsure if this is the best place to ask (please let me know if I should post in basecamp/kamal instead), but I’m trying to set up a 301 redirect from www.myapp.com to myapp.com (www to apex domain) for a Rails app deployed with Kamal. I noticed a related discussion in the main Kamal repo about redirecting the other way (apex to www, #1214), but my question is specific to www-to-apex and whether kamal-proxy can handle it.

Currently, I’m handling this in my Rails routes.rb file:

Rails.application.routes.draw do
  constraints(host: /^www\.myapp\.com$/) do
    get '(*any)', to: redirect { |params, req| "https://myapp.com#{req.fullpath}" }, status: 301
  end
  # Rest of routes...
end

This works, but I’m wondering if kamal-proxy can manage this redirect at the proxy level for better performance (avoiding the app layer). Is there a way to configure kamal-proxy (e.g., via deploy.yml or command-line options) to handle www-to-apex redirects? If not, is this a potential feature, or should I stick with the Rails approach?

Thanks for any guidance!

[kevinmcconnell]

Hi @DaniG2k, Kamal Proxy doesn't currently have a way to do this, so at the moment what you're doing is a good workaround.

However, it does seem like something we could be handling at the proxy layer, so yes I'd consider this a potential feature. There is an open PR at the moment that would cover this on the proxy side (#153) so once we land that we'd have a feature that we can then expose in Kamal.