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Deploying an Application

An Application is deployed to Deis using git push or the deis client.

Supported Applications

Deis can deploy any application or service that can run inside a Docker container. In order to be scaled horizontally, applications must follow the Twelve-Factor App methodology and store any application state in external backing services.

For example, if your application persists state to the local filesystem -- common with content management systems like Wordpress and Drupal -- it cannot be scaled horizontally using deis scale.

Fortunately, most modern applications feature a stateless application tier that can scale horizontally inside Deis.

Login to the Controller

!!! important if you haven't yet, now is a good time to install the client and register.

Before deploying an application, users must first authenticate against the Deis Controller using the URL supplied by their Deis administrator.

$ deis login http://deis.example.com
username: deis
password:
Logged in as deis

Upload Your SSH Public Key

If you plan on using git push to deploy applications to Deis, you must provide your SSH public key. Use the deis keys:add command to upload your default SSH public key, usually one of:

  • ~/.ssh/id_rsa.pub
  • ~/.ssh/id_dsa.pub
    $ deis keys:add
    Found the following SSH public keys:
    1) id_rsa.pub
    Which would you like to use with Deis? 1
    Uploading /Users/myuser/.ssh/id_rsa.pub to Deis... done

Select a Build Process

Deis supports three different ways of building applications:

Buildpacks

Heroku buildpacks are useful if you want to follow Heroku's best practices for building applications or if you are porting an application from Heroku.

Learn how to deploy applications using Buildpacks.

Dockerfiles

Dockerfiles are a powerful way to define a portable execution environment built on a base OS of your choosing.

Learn how to deploy applications using Dockerfiles.

Docker Image

Deploying a Docker image onto Deis allows you to take a Docker image from either a public or a private registry and copy it over bit-for-bit, ensuring that you are running the same image in development or in your CI pipeline as you are in production.

Learn how to deploy applications using Docker images.