3f76f9cfdb
The nova CDM builder code and notification handling code had some inefficiencies when it came to looking up a hypevisor to get details. The general pattern used before was: 1. get the minimal hypervisor information by hypervisor_hostname 2. make another query to get the hypervisor details by id In the notifications case, it was actually three calls because the first is listing hyprvisors to filter client-side by service host. This change collapses 1 and 2 above into a single API call to get the hypervisor by hypervisor_hostname with details which will include the service (compute) host information which is what get_compute_node_by_id() was being used for. Now that nothing is using get_compute_node_by_id it is removed. There is more work we could do in get_compute_node_by_hostname if the compute API allowed filtering hypervisors by service host so a TODO is left for that. One final thing: the TODO in get_compute_node_by_hostname about there being more than one hypervisor per compute service host for vmware vcenter is not accurate - nova's vcenter driver hasn't supported a host:node 1:M topology like that since the Liberty release [1]. The only in-tree driver in nova that supports 1:M is the ironic baremetal driver, so the comment is updated. [1] Ifc17c5049e3ed29c8dd130339207907b00433960 Depends-On: https://review.opendev.org/661785/ Change-Id: I5e0e88d7b2dd1a69117ab03e0e66851c687606da
========================
Team and repository tags
========================
.. image:: https://governance.openstack.org/tc/badges/watcher.svg
:target: https://governance.openstack.org/tc/reference/tags/index.html
.. Change things from this point on
..
Except where otherwise noted, this document is licensed under Creative
Commons Attribution 3.0 License. You can view the license at:
https://creativecommons.org/licenses/by/3.0/
=======
Watcher
=======
OpenStack Watcher provides a flexible and scalable resource optimization
service for multi-tenant OpenStack-based clouds.
Watcher provides a robust framework to realize a wide range of cloud
optimization goals, including the reduction of data center
operating costs, increased system performance via intelligent virtual machine
migration, increased energy efficiency and more!
* Free software: Apache license
* Wiki: https://wiki.openstack.org/wiki/Watcher
* Source: https://opendev.org/openstack/watcher
* Bugs: https://bugs.launchpad.net/watcher
* Documentation: https://docs.openstack.org/watcher/latest/
* Release notes: https://docs.openstack.org/releasenotes/watcher/