Bug 986367
Summary: | [RFE] Provide transformer for unit scaling and rate-of-change conversion | ||
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Product: | Red Hat OpenStack | Reporter: | Eoghan Glynn <eglynn> |
Component: | openstack-ceilometer | Assignee: | Eoghan Glynn <eglynn> |
Status: | CLOSED ERRATA | QA Contact: | Kevin Whitney <kwhitney> |
Severity: | high | Docs Contact: | |
Priority: | high | ||
Version: | 4.0 | CC: | ajeain, breeler, eglynn, jruzicka, mlopes, pbrady, sgordon, srevivo |
Target Milestone: | Upstream M2 | Keywords: | FutureFeature, OtherQA |
Target Release: | 4.0 | ||
Hardware: | Unspecified | ||
OS: | Unspecified | ||
URL: | https://blueprints.launchpad.net/ceilometer/+spec/transformer-unit | ||
Whiteboard: | |||
Fixed In Version: | openstack-ceilometer-2013.2-0.2.b1.el6ost | Doc Type: | Enhancement |
Doc Text: |
OpenStack Metering now has "transformers", which are a way of calculating a rate-of-change, or doing unit scaling conversions. Transformers are configurable and the values they produce as output can be emitted as derived meters.
This enables derived meters to be calculated from the original observations via configurable rules, for example simple scaling such as conversion from °F to °C, or more involved derivation of gauge rates from cumulative totals.
OpenStack Metering now provides a generic transformer for such conversions, that is used out-of-the-box for deriving CPU utilization percentage from cumulative CPU time, and may also be re-used for any additional cumulative-to-gauge conversions required via simple configuration.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2013-12-20 00:13:59 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | |||
Bug Blocks: | 973191, 975499, 987450, 1055813 |
Description
Eoghan Glynn
2013-07-19 15:04:46 UTC
How To Test =========== 0. Install packstack allinone, then spin up an instance in the usual way. 1. Ensure the old cpu_util pollster is no longer loaded: sudo grep cpu_util /usr/lib/python2.?/site-packages/ceilometer-2013*.egg-info/entry_points.txt # (no output expected) whereas the primary cpu pollster is still loaded: sudo grep '\<cpu\> /usr/lib/python2.?/site-packages/ceilometer-2013*.egg-info/entry_points.txt 2. Ensure that the cpu and cpu_util meters can be configured with independent cadences: sudo sed -i '/^ *name: cpu_pipeline$/ { n ; s/interval: 600$/interval: 60/ }' /etc/ceilometer/pipeline.yaml sudo service openstack-ceilometer-compute restart sleep 300 ceilometer sample-list -m cpu ceilometer sample-list -m cpu_util Confirm that the over the most recent time period, the cpu_util is being reported approximately at a ratio of 10:1 in frequency as compared to the cpu meter. QANAK'ing due to QE capacity Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHEA-2013-1859.html |