Phymata

Helping you shave yaks

jclouds and OpenStack

04 Sep 2012

Update: This post is out of date. Use the Apache jclouds OpenStack Quick Start Guide instead.

Getting jclouds and your own OpenStack deployment working together can be just a bit tricky as there are a couple of special configurations you need to make.

I've described how to get started with jclouds before but the other piece of this puzzle is your own OpenStack deployment. For easy and reliable testing I just run my own devstack install of OpenStack. Setting up devstack has been written about many times elsewhere so the only thing that I'll say about it here is that I use an Ubuntu 12.04 Server VM running in VirtualBox. The trickiest part of that setup is the networking so I posted my VirtualBox settings on this question on ServerFault. After that it's just a matter of following the devstack instructions.

Here's the code for connecting to OpenStack. It's very similar to the getting started example with a few key differences. In the init() method notice that

  • String provider = "openstack-nova";
    • This ones pretty self explanatory, we're using the OpenStack Nova provider in jclouds
  • String identity = "demo:demo"; // tenantName:userName
    • Here we use the tenant name and user name with a colon between them instead of just a user name
  • String password = "devstack";
    • Instead of using the API key I'm using the password I set when devstack did its installation
  • .endpoint("http://172.16.0.1:5000/v2.0/")
    • This is the Keystone endpoint that jclouds needs to connect with to get more info (services and endpoints) from OpenStack
    • When the devstack installation completes successfully, one of the last few lines will read something like "Keystone is serving at http://172.16.0.1:5000/v2.0/"
    • Set the endpoint to this URL

To get everything compiling and running do the following.

This post was written on Mac OS X 10.7.4, Java 1.6.0, jclouds 1.5.1 1.5.0-beta.10, and OpenStack Essex. If you’re on a different OS and run into problems, please feel free to comment.