Option to seed vhosts (and users) from deployment manifest about cf-rabbitmq-release

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this. Unfortunately, the Pivotal Tracker project is private so you may be unable to view the contents of the story.

The labels on this github issue will be updated when the story is started.

[michaelklishin]

You want definitions import. I highly recommend not reinventing them on top of BOSH.

[MatthiasWinzeler]

Are you talking about Load definitions at startup?

If we can specify this in the deployment manifest - which is not possible currently - this could indeed solve our problem.

[michaelklishin]

@MatthiasWinzeler yes, that section. I'm pretty sure there is a way to specify arbitrary config settings in Ops Manager, so presumably there should be a way to do that with straight BOSH.

Even if somehow that's not possible or very difficult, making that possible should be the goal instead of reinventing definitions import with BOSH and rabbitmqctl.

[MatthiasWinzeler]

@michaelklishin You're right, we could set the config entry load_definitions using the rabbitmq-server.config key.

But: load_definitions needs a JSON file on the server itself - so we would need to add a mechanism to the BOSH release to write this file to the server.
What do you guys think about this:

# Introduce a new configuration item 
rabbitmq-server.load_definitions:
  description: definitions (JSON) to be imported on RabbitMQ startup
  default: null
  example: |
    {
	"users": [{
		"name": "defuser",
		"password": "defpasswd",
		"tags": "administrator"
	}],
	"vhosts": [{
		"name": "from-def"
	}],
	"permissions": [{
		"user": "defuser",
		"vhost": "from-def",
		"configure": ".*",
		"write": ".*",
		"read": ".*"
	}]
}

This would then write the contents as a file to the FS and point the RMQ config entry to it.

[carlo-colombo]

@MatthiasWinzeler we recently implemented this feature. We expose load_definitions property in the rabbitmq-server. Differently from your suggestion the property is not a json serialized as string but directly a structure that will be serialized and loaded using http://www.rabbitmq.com/management.html#load-definitions.

The feature is available from release v226.6

rabbitmq-server.load_definitions:
 description: definitions (JSON) to be imported on RabbitMQ startup
 default: null
 example:
   vhosts:
   -  {name: from-def}
   users:
   - name: defuser
     password: pwd
     tags: administrator
   permissions:
   - user: defuser
     vhost: from-def
     configure: '*.'
     write: '.*'
     read: '.*'

[MatthiasWinzeler]

Nice to hear - thank you!