Open Stack

On 01/09/2014 06:14 PM, Brant Knudson wrote:
>
>
>
> On Thu, Jan 9, 2014 at 12:21 PM, Mike Spreitzer <mspreitz at us.ibm.com 
> <mailto:mspreitz at us.ibm.com>> wrote:
>
>     Brant Knudson <blk at acm.org <mailto:blk at acm.org>> wrote on
>     01/09/2014 10:07:27 AM:
>
>
>     > When I was starting out, I ran devstack (
>     http://devstack.org/) on
>     > an Ubuntu VM. You wind up with a system where you've got a basic
>     > running OpenStack so you can try things out with the command-line
>     > utilities, and also do development because it checks out all the
>     > repos. I learned a lot, and it's how I still do development.
>
>     What sort(s) of testing do you do in that environment, and how?
>
>
> Just running devstack exercises quite a bit of code, because it's 
> setting up users, project, and loading images. Now you've got a system 
> that's set up so you can add your own images and boot them using 
> regular OpenStack commands, and you can use the command-line utilities 
> or REST API to exercise your changes. The command-line utilities and 
> REST API are documented. There are some things that you aren't going 
> to be able to do with devstack because it's a single node, but that 
> hasn't affected my development.
>
>      Does your code editing interfere with the running DevStack?
>
>
> Code editing doesn't interfere with a running DevStack. After you make 
> a change you can find the process's screen in devstack's and restart 
> it to pick up your changes. For example if you made a change that 
> affects nova-api, you can restart the process in the n-api screen.
>
>      Can you run the unit tests without interference from/to the
>     running DevStack?
>
>
> Running unit tests doesn't interfere with DevStack. The unit tests run 
> in their own processes and also run in a virtual environment.
>
>      How do you do bigger tests?
>
>
> For bigger tests I'd need a cluster which I don't have, so I don't do 
> bigger tests.
It is possible to setup a multi-node devstack cloud using multiple VMs, 
see http://devstack.org/guides/multinode-lab.html. Depending on what you 
are trying to test, e.g., VM migration, this may be sufficient.
>
>      What is the process for switching from running the merged code to
>     running your modified code?
>
>
> I don't know what the merged code is? I use eclipse, so I create a 
> project for the different directories in /opt/stack so I can edit the 
> code right there.
>
>      Are the answers documented someplace I have not found?
>
>     Thanks,
>     Mike
>
>
> Not that I know of... the wiki pages are editable, so you or I could 
> update them to help out others.
>
> - Brant
>
>

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