[openstack-dev] [all] FYI - dropping non RabbitMQ support in devstack

Davanum Srinivas davanum at gmail.com
Thu Jun 18 13:53:31 UTC 2015

yay! thanks Sean.

-- dims

On Thu, Jun 18, 2015 at 9:36 AM, Sean Dague <sean at dague.net> wrote:
> On 06/18/2015 06:49 AM, Sean Dague wrote:
>> On 06/18/2015 03:28 AM, ozamiatin wrote:
>>> Hi, please don't remove zmq support from devstack.
>>> We are now in progress of writing a new version of the driver.
>>> I use devstack each time to check the driver functionality.
>>> When the implementation become public it will be even more
>>> important to have a possibility to check it on devstack.
>> Which will be extremely easy to continue doing with an external plugin,
>> and also make it much simpler for you to add new enhancements to it.
>> Your development workflow would be add the following line to your localrc:
>> enable_plugin zmq git://..........................
>> And will continue exactly the same in usage pattern of devstack after that.
> So, instead of further explaining that this was going to be easy to do
> out of tree, I did it for the 0mq case.
> https://github.com/sdague/zmq-devstack is up and ready to go. It creates
> the same functional environment as the in code. You can demonstrate that
> by doing the following:
> git clone https://github.com/openstack-dev/devstack
> cd devstack
> git review -d 192154  (this is the code which deletes all the non rabbit
> code from the devstack tree)
> echo "enable_plugin zmq-devstack https://github.com/sdague/zmq-devstack"
>>> localrc
> ./stack.sh
> Which I just did and tested in a local 14.04 vagrant (easily built with
> devstack-vagrant project).
> Looked through all the logs, things look like they are working to some
> degree. Saw a couple of stack traces that looked non fatal in
> nova-conductor, which would be the current state of the zmq driver from
> my understanding. I did not functionally test this beyond that, because
> from a devstack interface point of view, all the things devstack used to
> do (install redis, zmq code, start the oslo messaging zmq receiver, and
> setup all the config files for all the projects) match the output of the
> old code.
> The effort could use a README like the other devstack plugins have, to
> document to prospective users what variables they have access when using
> this. I'll leave that as an exercise for whenever someone imports this
> into gerrit to take ownership of it.
> Other drivers should be able to pretty closely model this in about 30
> minutes of work. The install and post-config phases are probably the
> only ones you need. (install for installing code, post-config for
> starting servers). User friendly plugins will want to also want to
> implement clean and maybe unstack. (clean is implemented here, because
> it was in the old code).
>         -Sean
> --
> Sean Dague
> http://dague.net
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Davanum Srinivas :: https://twitter.com/dims

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