fb85b27ae3
The prometheus datasource was reporting host_ram_usage in MiB as described in the docstring for the base datasource interface definition [1]. However, the gnocchi datasource is reporting it in KiB following ceilometer metric `hardware.memory.used` [2] and the strategies using that metric expect it to be in KiB so the best approach is to change the unit in the prometheus datasource and update the docstring to avoid missunderstandings in future. So, this patch is fixing the prometheus datasource to return host_ram_usage in KiB instead of MiB. Additionally, it is adding more unit tests for the check_threshold method so that it covers the memory based strategy execution, validates the calculated standard deviation and adds the cases where it is below the threshold. [1]15981117ee/watcher/decision_engine/datasources/base.py (L177-L183)[2] https://docs.openstack.org/ceilometer/train/admin/telemetry-measurements.html#snmp-based-meters Closes-Bug: #2113776 Change-Id: Idc060d1e709c0265c64ada16062c3a206c6b04fa (cherry picked from commit6ea362da0b)
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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/