Setting Dokku environment variables

Question

I'm trying to set Some variables on Dokku for deployment. As far as i can see from the dev files, one should create a .env file in the directory and put the variables in there. But this is not updating anything

.env file

DOKKU_NGINX_PORT=3000
MYSQL_URL=http://blabla
MYSQL_USER=mysqluser

I'm trying to map the port of the app to port 3000, and inject the mysql vars into the runtime environment.

I know I can set it with dokku config:set on the server, but I want to be able to automate it during deployment.

Any ideas? Or an example?

Serpasil

Answer 1

You'll need to install a Dokku client, or CLI in order to locally interact with the remote application on your Dokku instance.

Here are a few options:

• (node.js) dokku-toolbelt

  Dokku toolbelt is a node-based CLI wrapper that proxies requests to the Dokku command running on remote hosts.

You can install it via the following shell command (assuming you have node and npm installed):

$ npm install -g dokku-toolbelt

See documentation here for more information.

• (python) dokku-client

  Dokku client is an extensible python-based cli wrapper for remote Dokku hosts.

You can install it via the following shell command (assuming you have python and pip installed):

$ pip install dokku-client

See documentation here for more information.

• (ruby) Dokku CLI

  Dokku CLI is a rubygem that acts as a client for your Dokku installation.

You can install it via the following shell command (assuming you have ruby and rubygems installed):

$ gem install dokku-cli

See documentation here for more information.

---

After the Dokku client is installed locally, make sure that the dokku app remote is set inside the repository directory.

You can verify this by running $ git remote -v.

If the output doesn't show your dokku application instance, set it with the following command:

$ git remote add dokku [email protected]:your-app-name

Here's an example from my terminal with some information redacted for security purposes.

    seth@linuxmint ~/repos/Adopt-a-Pet $ git remote -v
    dokku   [email protected]:adopt-a-pet (fetch)
    dokku   [email protected]:adopt-a-pet (push)
    origin  https://github.com/sethbergman/Adopt-a-Pet.git (fetch)
    origin  https://github.com/sethbergman/Adopt-a-Pet.git (push)

Then you can set environment variables with the following commands:

$ dokku config:set DOKKU_NGINX_PORT=3000

You can optionally set environment variables with the .env file:

$ dokku config:set:file <path/to/.env>

If the .env file is in the root directory of the repository, then the command would be:

$ dokku config:set:file <.env>

Developing

This does not at all answer the original question. OP asked how to get environment variables picked up automatically from a file, not how to set them manually given a file... – Misdirect

Answer 2

If you're using ruby, you can use the gem 'dokku-cli'. With that, you can set config from any file by issuing the command

dokku config:set:file <path/to/file>

See ruby doc

Mauricemauricio