Dokku run PostgreSQL on another instance/droplet

  • Posted on February 8, 2015
  • kernchehAsked by kerncheh


I’ve recently set up an instance with Dokku, and deployed a Rails application running on PostgreSQL with the help of dokku-pg-plugin. Everything works perfect.

However, I would like to spin up another droplet to specifically run the database in a container, without forgoing Dokku. Anyone has experience doing something like that? From what I see dokku-pg-plugin does not have documentation on how to link apps across servers.

Thank you!

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.

If you are running the database on a separate server, your best bet would be to design your app in such a way that it determines the Postgres connection information from environment variables. This way you are able to use Dokku’s built in config managment. It is also a general best practice.

Your database.yml would look something like:

  adapter: postgresql
  encoding: unicode
  database: dbname
  pool: 5
  username: user
  password: <%= ENV['DB_PWD'] %>
  host: <%= ENV['DB_HOST] %>
  port: <%= ENV['DB_PORT'] %>

You would then set the configuration in Dokku with:

dokku config:set myapp DB_HOST= DB_PWD=thisisasecret DB_PORT=5432