A holistic Resource Placement Optimization Service
Go to file
OpenDev Sysadmins 60c1cbf158 OpenDev Migration Patch
This commit was bulk generated and pushed by the OpenDev sysadmins
as a part of the Git hosting and code review systems migration
detailed in these mailing list posts:


Attempts have been made to correct repository namespaces and
hostnames based on simple pattern matching, but it's possible some
were updated incorrectly or missed entirely. Please reach out to us
via the contact information listed at https://opendev.org/ with any
questions you may have.
2019-04-19 19:51:44 +00:00
api-ref/source Add /v1/plans api-ref 2017-06-13 23:52:37 -05:00
bin Moved logger references to file headers 2017-06-15 15:47:28 -05:00
debian Adding packaging and debian instructions 2017-08-16 14:02:15 -05:00
devstack Valet Devstack Plugin 2017-06-20 16:19:23 -05:00
doc Refactor valet_plugins 2017-08-28 11:42:32 -05:00
etc Adding packaging and debian instructions 2017-08-16 14:02:15 -05:00
plugins Refactor valet_plugins 2017-08-28 11:42:32 -05:00
releasenotes/source Remove setting of version/release from releasenotes 2017-11-17 10:30:01 +01:00
tools/utils Refactor Optimizer 2017-08-16 15:16:56 -05:00
valet fix link 2018-04-17 02:36:30 +08:00
.coveragerc Initial commit 2016-12-12 08:50:24 -06:00
.gitignore Migrate .testr.conf to .stestr.conf 2017-09-26 15:53:24 +00:00
.gitreview OpenDev Migration Patch 2019-04-19 19:51:44 +00:00
.stestr.conf Migrate .testr.conf to .stestr.conf 2017-09-26 15:53:24 +00:00
CONTRIBUTING.rst Fix CRLF issues 2017-06-03 11:39:05 -05:00
HACKING.rst Fix CRLF issues 2017-06-03 11:39:05 -05:00
LICENSE Valet Documentation 2017-05-01 19:07:42 -05:00
README.md Fix pep8 and docstring violations 2017-05-01 19:24:57 -05:00
babel.cfg Fix CRLF issues 2017-06-03 11:39:05 -05:00
requirements.txt Revert "Centralized configuration and auto generation" 2017-06-20 18:25:50 +00:00
run_all_tests.sh Refactor Optimizer 2017-08-16 15:16:56 -05:00
run_examples.sh Refactor Optimizer 2017-08-16 15:16:56 -05:00
run_test.sh Refactor Optimizer 2017-08-16 15:16:56 -05:00
run_until_fail.sh Refactor Optimizer 2017-08-16 15:16:56 -05:00
setup.cfg Adding packaging and debian instructions 2017-08-16 14:02:15 -05:00
setup.py Fix pep8 and docstring violations 2017-05-01 19:24:57 -05:00
test-requirements.txt Add bandit target 2017-06-08 06:21:18 +00:00
tox.ini Migrate .testr.conf to .stestr.conf 2017-09-26 15:53:24 +00:00



Valet is a cloud resource placement optimization service. Valet gives OpenStack the ability to optimize cloud resources while simultaneously meeting a cloud application's QoS requirements. Through model driven orchestration, the target state of Valet is to provide “holistic OpenStack data-plane resource placement”. Valet provides an api service, a placement optimizer (Ostro), a high availability data storage and persistence layer (Music), and a set of OpenStack plugins.

Why Valet exists:

For large-scale, multi-tenant cloud operators, there is a large demand for tenant specific service requests. This demand drives the growth of the number of cloud availability zones and compartmentalization of the cloud, which then leads to increased provisioning and sub-optimal use of cloud and staff resources. Also, security requirements lead us to place specialized network appliances of these tenants separately into “exclusive” hosts that do not have internet connectivity.

Valet responds to the challenges outlined above by enhancing OpenStack Nova scheduling to develop resource management optimization. By planning the placement of all the cloud resources for an application in a holistic manner, there is opportunity to reduce cross-rack traffic, reduce resource fragmentation, and save on operating costs.

Learn more about Valet:

Valet consists of the following components:

  • valet-openstack: a set of OpenStack plugins used to interact with Valet
  • valet-api: an API engine used to interact with Valet
  • Ostro: a placement optimization engine
  • ostro-listener: a message bus listener used in conjunction with Ostro and Music

Additional documents:


Valet 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.