# Install Dokku on DreamHost Cloud Server with cloud-init

Cloud-init script can be used to automate installation of Dokku on
Dreamhost (or any other OpenStack-compatible cloud with minimal
changes).

A new server can be created on DreamHost Cloud from the command line
using openstack client or from the web UI and with the same command
use a cloud-init script to install Dokku. Install the [openstack
cli](https://help.dreamhost.com/hc/en-us/articles/216185658-How-to-Install-the-OpenStack-command-line-clients),
download the [DreamHost Cloud credentials
file](https://iad2.dreamcompute.com/project/access_and_security/api_access/openrc/)
before proceeding and make sure your public SSH key is added to the
cloud.

```sh
source openrc.sh # Set the environment variables for DreamHost Cloud
```

This allows openstack client to connect to DreamHost API endpoints.
The command below creates a new server named `my-dokku-instance` based
on Ubuntu 14.04, with 2GB RAM and 1CPU (the flavor called
`semisonic`), opening network port access to http and ssh (the
`default` security group), and the name of the chosen SSH key. This
key will be automatically added to the new server in the
`authorized_keys` for the default SSH user (`dhc-user`), and it will
be reused by Dokku.

```sh
openstack server create \
  --image Ubuntu-14.04 \
  --flavor gp1.semisonic \
  --security-group default \
  --key-name $YOUR_SSH_KEYNAME \
  --user-data dokku-cloudinit.sh \
  my-dokku-instance
```

The content of dokku-cloudinit.sh script contains instructions to add
Docker and Dokku's apt repositories and install Dokku with the proper
debconf options set. Don't forget to add the FQDN for your application
server:

```yaml
#cloud-config
apt_upgrade: true

apt_sources:
 - source: "deb https://packagecloud.io/dokku/dokku/ubuntu/ trusty main"
   key: |
    -----BEGIN PGP PUBLIC KEY BLOCK-----
    Version: SKS 1.1.5
    Comment: Hostname: pgpkeys.eu

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    -----END PGP PUBLIC KEY BLOCK-----
   filename: dokku.list
 - source: "deb https://apt.dockerproject.org/repo ubuntu-trusty main"
   key: |
    -----BEGIN PGP PUBLIC KEY BLOCK-----
    Version: SKS 1.1.5
    Comment: Hostname: pgpkeys.co.uk

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   filename: docker.list

package_upgrade: true

debconf_selections: |

    dokku dokku/web_config boolean false
    dokku dokku/vhost_enable boolean true
    # set the domain name of the new Dokku server
    dokku dokku/hostname string $YOUR_FULL_QUALIFIED_DOMAIN
    # this copies over the public SSH key assigned to the server
    dokku dokku/key_file string /home/dhc-user/.ssh/authorized_keys

packages:
   - dokku
```