grizzly: add docs for nova-conductor

patch was merged

For more information you can go through http://docs.openstack.org/grizzly/basic-install/apt/content/basic-install_controller.html

What types of additional information would be useful?

Additional information for?

I think it would be helpful if there was some text in the compute admin guide that discussed what the nova-conductor service does.

The nova-conductor service is key to completing no-db-compute. Conceptually, it implements a new layer on top of nova-compute. It should *not* be deployed on compute nodes, or else the security benefits of removing database access from nova-compute will be negated. Just like other nova services such as nova-api or nova-scheduler, it can be scaled horizontally. You can run multiple instances of nova-conductor on different machines as needed for scaling purposes.

The methods exposed by nova-conductor will initially be relatively simple methods used by nova-compute to offload its database operations. Places where nova-compute previously did database access will now be talking to nova-conductor. However, we have plans in the medium to long term to move more and more of what is currently in nova-compute up to the nova-conductor layer. The compute service will start to look like a less intelligent slave service to nova-conductor. The conductor service will implement long running complex operations, ensuring forward progress and graceful error handling. This will be especially beneficial for operations that cross multiple compute nodes, such as migrations or resizes

Thanks Ramkumar!

No Problem Tom...

Fix proposed to branch: master
Review: https://review.openstack.org/35025

patching to add nova-conductor description in the config guide:

https://review.openstack.org/35025

Reviewed: https://review.openstack.org/35025
Committed: http://github.com/openstack/openstack-manuals/commit/24293e8a2856813ab2460d04fa4c979d7ce92854
Submitter: Jenkins
Branch: master

commit 24293e8a2856813ab2460d04fa4c979d7ce92854
Author: Tom Fifield <email address hidden>
Date: Sun Jun 30 17:10:01 2013 +1000

    Add nova-conductor description to config guide

    Adds a chapter on nova-conductor to the configuration reference

    fixes bug 1082689

    Minor edits, rebase.

    Change-Id: If713e179706228fb5cb2e817a27efb0df81cfe0d