f07694ba6c
The apscheduler background scheduler spawns a native thread which is not monkey patched which interacts with shared module level objects like the module level LOG instances and sqlachmey engine facades. This is unsafe and leads to mixing patched and unpatched code in the same thread. This manifests in 2 ways: 1.) https://paste.opendev.org/show/bGPgfURx1cZYOsgmtDyw/ sqlalchmey calls can fail due to a time.sleep(0) in oslo.db being invoked using the unpatched time modules in an eventlet greenthrad. 2.) https://paste.opendev.org/show/b5C2Zz4A4BFIGbKLKrQU/ over time that caused the sqlalchmy connection queuepool to fill up preventing backgound tasks form running like reconsiling audits. This change adresses this by overloading the background scheduler _main_loop to monkey patch the main loop if the calling thread was monkey patched. Closes-Bug: #2086710 Change-Id: I672c183274b0a17cb40d7b5ab8c313197760b5a0
=======
Watcher
=======
.. 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/
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/