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Hi Matthew,

That’s useful.
Thanks

On 20 Oct 2015 at 11:22:07, Matthew Mosesohn (mmosesohn at mirantis.com) wrote:
Hi Patrick,

During the 7.0 development cycle we made a lot of enhancements to what environment characteristics can be modified through a plugin. One item that plugins cannot directly modify is the default Fuel roles and their metadata. That having been said, there is an open-ended post_install.sh script you can use for your plugin to "hack" this value. I know of one project that currently disables the requirement for controller role in a deployment. This may be helpful in testing a given standalone role that doesn't depend on a controller.

Here's a link to the script: http://paste.openstack.org/show/476821/
Note that this doesn't reflect "enabled" status of a plugin. It will make controller min count 0 for all environments. That won't break them, but it just removes the restriction.

Best Regards,
Matthew Mosesohn

On Mon, Oct 19, 2015 at 3:29 PM, Dmitry Mescheryakov <dmescheryakov at mirantis.com> wrote:
Hello folks,

I second Patrick's idea. In our case we would like to install standalone RabbitMQ cluster with Fuel reference architecture to perform destructive tests on it. Requirement to install controller is an excessive burden in that case.

Thanks,

Dmitry

2015-10-19 13:44 GMT+03:00 Patrick Petit <ppetit at mirantis.com>:
Hi There,

There are situations where we’d like to deploy only Fuel plugins in an environment.
That’s typically the case with Elasticsearch and InfluxDB plugins of LMA tools.
Currently it’s not possible because you need to at least have one controller.
What exactly is making that limitation? How hard would it be to have it removed?

Thanks
Patrick

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