424e9a76af
The "vm workload consolidation" strategy is summing up instance usage in order to estimate host usage. The problem is that some infrastructure services (e.g. OVS or Ceph clients) may also use a significant amount of resources, which would be ignored. This can impact Watcher's ability to detect overloaded nodes and correctly rebalance the workload. This commit will use the host metrics, if available. The proposed implementation uses the maximum value between the host metric and the sum of the instance metrics. Note that we're holding a dict of host metric deltas in order to account for planned migrations. Change-Id: I82f474ee613f6c9a7c0a9d24a05cba41d2f68edb
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Watcher
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.. 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
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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/
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/
* Design specifications: https://specs.openstack.org/openstack/watcher-specs/