c250aca00b
The code recently added to clean up the compute monitor loading to use stevedore was assuming a single type of compute monitor: cpu monitors. This patch allows multiple monitor types, namespaced by the directory in nova/compute/monitors. The NUMA memory bandwidth monitor is the next monitor namespace to be proposed, and this code sets up that patch series. DocImpact: This patch provides the infrastructure for non-CPU compute monitors to be loaded properly by the stevedore extension manager. The CONF.compute_monitors configuration option previously supported only CPU monitors, and so the format of the configuration option (which is a multi-list option) looked like this: CONF.compute_monitors = ['virt_driver'], which could be read as "Use the virt_driver CPU monitor". Now, non-CPU monitors can be loaded by the extension manager, and so a namespace prefix is also considered. For example, setting CPU.compute_monitors to ['cpu.virt_driver', 'numa_mem_bw.virt_driver'] would allow the loading of both the virt_driver CPU monitor and the virt_driver NUMA memory bandwidth monitor. To preserve backwards compatibility, if there is no namespace given, the 'cpu.' namespace is assumed. Closes-bug: 1487070 Change-Id: I7ad45d5c5d617625b76cc79a65f8c185a24c79b6
OpenStack Nova README
OpenStack Nova provides a cloud computing fabric controller, supporting a wide variety of virtualization technologies, including KVM, Xen, LXC, VMware, and more. In addition to its native API, it includes compatibility with the commonly encountered Amazon EC2 and S3 APIs.
OpenStack Nova is distributed under the terms of the Apache License, Version 2.0. The full terms and conditions of this license are detailed in the LICENSE file.
Nova primarily consists of a set of Python daemons, though it requires and integrates with a number of native system components for databases, messaging and virtualization capabilities.
To keep updated with new developments in the OpenStack project follow @openstack on Twitter.
To learn how to deploy OpenStack Nova, consult the documentation available online at:
For information about the different compute (hypervisor) drivers supported by Nova, read this page on the wiki:
In the unfortunate event that bugs are discovered, they should be reported to the appropriate bug tracker. If you obtained the software from a 3rd party operating system vendor, it is often wise to use their own bug tracker for reporting problems. In all other cases use the master OpenStack bug tracker, available at:
Developers wishing to work on the OpenStack Nova project should always base their work on the latest Nova code, available from the master GIT repository at:
Developers should also join the discussion on the mailing list, at:
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
Any new code must follow the development guidelines detailed in the HACKING.rst file, and pass all unit tests. Further developer focused documentation is available at:
For information on how to contribute to Nova, please see the contents of the CONTRIBUTING.rst file.
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