Question

Dokku and Subdomain forwarding

  • Posted on September 1, 2014
  • minh.nAsked by minh.n

Hello. I’m a bit new to all this so please bare with me. I’ve set up Dokku with a very simple rails app following: https://www.digitalocean.com/community/tutorials/how-to-use-the-dokku-one-click-digitalocean-image-to-run-a-ruby-on-rails-app

The app is toy-app and I’ve set Dokku to use subdomain like this tutorial: https://www.digitalocean.com/community/tutorials/how-to-use-the-digitalocean-dokku-application

My zone file is:

$TTL	1800
@		IN	SOA	NS1.DIGITALOCEAN.COM.	hostmaster.minhn.net. (
			1409595135 ; last update: 2014-09-01 18:12:15 UTC
			3600 ; refresh
			900 ; retry
			1209600 ; expire
			1800 ; ttl
			)
             IN      NS      NS1.DIGITALOCEAN.COM.
                     NS      NS2.DIGITALOCEAN.COM.
                     NS      NS3.DIGITALOCEAN.COM.
@	IN A	107.170.189.247
*.minhn.net	IN A	107.170.189.247
toy-app	IN A	107.170.189.247
sample-app	IN A	107.170.189.247
*.toy-app	CNAME	toy-app.minhn.net.
*.sample-app	CNAME	sample-app.minhn.net.

I plan on having another app called sample-app and have sample-app.minhn.net go to that app. I want my minhn.net to lead to no where for now. But right now minhn.net and sample-app.minhn.net both goes to toy-app.minhn.net.

Why is this? Is it because the * A record I have? I thought that just meant anything before minhn.net would be forward to the ip but then dokku would check if it matches the subdomain name, if not it won’t serve the app?

Thanks for your time.

Show comments

Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.

You need to modify the Virtual Host config file for toy-app, and put this in:

ServerName toy-app.minhn.net
ServerAlias toy-app.minhn.net

above < Directory >

Also, do the same for all other vhosts. When hosting more than one domain, it needs to know which vhost the config is for, or it goes to the default

If that doesn’t work, and you’re running CentOS/Fedora, edit /etc/httpd/conf/httpd.conf and uncomment

NameVirtualHost 80

reload/restart apache2/httpd, and you should be good.