Simple DNS for Engine Yard AppCloud environments

Currently creates A records for a domain (.myapp.com and www.myapp.com) to point to the public IP of an AppCloud environment.

You can use any DNS provider supported by fog, including AWS Route 53, Blue Box, DNSimple, Linode, Slicehost and Zerigo.

For example:

NOTE: This image is an artist's impression. Probably an artist who doesn't know how HTTP requests and DNS work. HTTP reqests don't go through DNSimple (or any DNS nameserver). The host in the URL is translated from myapp.com into an IP address (e.g. 1.2.3.4) by DNS. The HTTP request then goes to the IP address. But the picture looks nice.

Usage

First, setup DNS credentials in ~/.fog (see below).

Basic usage is very simple. Assuming you have registered myapp.com with one of your DNS providers, the following will automatically work:

$ ey-dns assign myapp.com
Found AppCloud environment giblets on account main with IP 1.2.3.4
Found myapp.com in DNSimple account

Assigning myapp.com --> 1.2.3.4 (drnic/myapp_production)
Assigning www.myapp.com --> 1.2.3.4 (drnic/myapp_production)

If an AppCloud environment cannot be automatically detected, explicitly pass -e or -a flags like the ey CLI itself:

$ ey-dns assign myapp.com -e myapp_production

If .myapp.com or www.myapp.com already exist you will be prompted to override them. You can force the override with the --override or -o flag.

Setup

$ gem install engineyard-dns

To setup credentials for AppCloud, run the following command for the first time and you will be prompted for credentials:

$ ey environments --all

To setup credentials for DNSimple, create a file ~/.fog to look like:

:default:
  :dnsimple_email:        EMAIL
  :dnsimple_password:     PASSWORD

To setup credentials for AWS Route 53, create a file ~/.fog to look like:

:default:
  :aws_access_key_id:     ACCESS_KEY
  :aws_secret_access_key: SECRET_ACCESS_KEY

If you have multiple DNS providers then add as many credentials within :default as you like.

On Unix, make this file readable to you only:

$ chmod 600 ~/.fog

Test you have fog working with your DNS provider:

$ fog
>> provider = 'DNSimple' # or 'AWS' or 'Slicehost' etc
>> Fog::DNS.new({:provider => provider}).zones.all.map(&:domain)
["drnicwilliams.com", "emrubyconf.com", ...]

Development

The test suite is purely cucumber scenarios. No rspec tests are being used. There are credentials for http://test.dnsimple.com built into the test suite. You should not have to do anything to run the tests except:

git clone git://github.com/engineyard/engineyard-dns.git
cd engineyard-dns
bundle
bundle exec rake

License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.