Reviewed: https://review.openstack.org/532491 Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=30786b892e45602d76cea63ca4ae1172fb2e063e Submitter: Zuul Branch: master
commit 30786b892e45602d76cea63ca4ae1172fb2e063e Author: Liam Young <[email protected]> Date: Wed Jan 10 11:06:37 2018 +0000 Add exception to no-upcall note of cells doc The cells v2 layout documentation clearly states that there are no upcalls from cells back to the central API services. This mislead me for sometime as I could not fathom how a compute node in a cell was supposed to report its resource info. It turns out nova looks up the placement service in the keystone catalogue and contacts it directly which to my mind is an upcall. I wonder if the author of the not felt that the placement service is not really part of nova? Change-Id: If14be8b182f0af4e4e6641046fec638c07e26546 Closes-Bug: #1742421 ** Changed in: nova Status: In Progress => Fix Released -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1742421 Title: Cells Layout (v2) in nova doc misleading about upcalls Status in OpenStack Compute (nova): Fix Released Bug description: - [X] This doc is inaccurate in this way: Documentation suggests nova v2 cells do not make 'upcalls' but they do when talking to the placement api. - [ ] This is a doc addition request. - [ ] I have a fix to the document that I can paste below including example: input and output. It is important to note that services in the lower cell boxes only have the ability to call back to the placement API and no other API-layer services via RPC, nor do they have access to the API database for global visibility of resources across the cloud. This is intentional and provides security and failure domain isolation benefits, but also has impacts on somethings that would otherwise require this any-to-any communication style. Check the release notes for the version of Nova you are using for the most up-to-date information about any caveats that may be present due to this limitation. ----------------------------------- Release: 17.0.0.0b3.dev323 on 2018-01-09 21:52 SHA: 90a92d33edaea2b7411a5fd528f3159a486e1fd0 Source: https://git.openstack.org/cgit/openstack/nova/tree/doc/source/user/cellsv2-layout.rst URL: https://docs.openstack.org/nova/latest/user/cellsv2-layout.html To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1742421/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
