28b7324f32
Horizon deprecated the metering tab a few cycles ago and removed it in Ocata. update to highlight that Gnocchi itself supports Grafana for graphing purposes. Change-Id: I601ae3a3bb87f8a9436cdb80113fa2a896df0a92
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2.4 KiB
ReStructuredText
60 lines
2.4 KiB
ReStructuredText
.. _telemetry:
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=========
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Telemetry
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=========
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Even in the cloud industry, providers must use a multi-step process
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for billing. The required steps to bill for usage in a cloud
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environment are metering, rating, and billing. Because the provider's
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requirements may be far too specific for a shared solution, rating
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and billing solutions cannot be designed in a common module that
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satisfies all. Providing users with measurements on cloud services is
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required to meet the ``measured service`` definition of cloud computing.
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The Telemetry service was originally designed to support billing
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systems for OpenStack cloud resources. This project only covers the
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metering portion of the required processing for billing. This service
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collects information about the system and stores it in the form of
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samples in order to provide data about anything that can be billed.
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In addition to system measurements, the Telemetry service also
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captures event notifications triggered when various actions are
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executed in the OpenStack system. This data is captured as Events and
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stored alongside metering data.
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The list of meters is continuously growing, which makes it possible
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to use the data collected by Telemetry for different purposes, other
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than billing. For example, the autoscaling feature in the
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Orchestration service can be triggered by alarms this module sets and
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then gets notified within Telemetry.
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The sections in this document contain information about the
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architecture and usage of Telemetry. The first section contains a
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brief summary about the system architecture used in a typical
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OpenStack deployment. The second section describes the data
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collection mechanisms. You can also read about alarming to understand
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how alarm definitions can be posted to Telemetry and what actions can
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happen if an alarm is raised. The last section contains a
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troubleshooting guide, which mentions error situations and possible
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solutions to the problems.
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You can retrieve the collected data in two different ways: with
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the REST API or with the command-line interface of the storage service.
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Additionally, measurement data can be visualised through a graphical
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service such as Grafana.
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.. toctree::
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:maxdepth: 2
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telemetry-system-architecture.rst
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telemetry-data-collection.rst
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telemetry-data-pipelines.rst
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telemetry-data-retrieval.rst
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telemetry-alarms.rst
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telemetry-measurements.rst
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telemetry-events.rst
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telemetry-troubleshooting-guide.rst
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telemetry-best-practices.rst
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