64 lines
2.3 KiB
ReStructuredText
64 lines
2.3 KiB
ReStructuredText
What is CloudKitty ?
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====================
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CloudKitty is a **Rating-as-a-Service** project for OpenStack and more.
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The project aims at being a **generic** solution for the chargeback and rating
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of a cloud. Historically, it was only possible to operate it inside of an
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OpenStack context, but it is now possible to run CloudKitty in standalone mode.
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CloudKitty allows to do metric-based rating: it polls endpoints in order to
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retrieve measures and metadata about specific metrics, applies rating rules to
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the collected data and pushes the rated data to its storage backend.
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More details about concepts, expressions, and jargons can be found in the
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`documentation of CloudKitty concepts`_.
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CloudKitty is highly modular, which makes it easy to add new features.
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.. only:: html
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.. note::
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**We're looking for contributors!** If you want to contribute, please have
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a look at the `developer documentation`_ .
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.. _developer documentation: developer/index.html
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.. _documentation of CloudKitty concepts: concepts/index.html
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What can be done with CloudKitty ? What can't ?
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===============================================
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**With Cloudkitty, it is possible to:**
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- Collect metrics from OpenStack (through Gnocchi) or from
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somewhere else (through Gnocchi in standalone mode and Prometheus). Metric
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collection is **highly customizable**.
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- Apply rating rules to the previous metrics through the `hashmap`_ module or
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`custom scripts`_. This is all done via CloudKitty's API.
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- Retrieve the rated information through the API, grouped by scope and/or by
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metric type.
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**However, it is not possible to:**
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- Limit resources in other OpenStack services once a certain limit has been
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reached. Ex: block instance creation in Nova above a certain price.
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Cloudkitty does **rating and only rating**.
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- Add taxes, convert between currencies, etc... This needs to be done by a
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billing software. CloudKitty associates a price to a metric for a given
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period, but the price's unit is what you decide it to be: euros, dollars,
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cents, squirrels...
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.. _custom scripts: user/rating/pyscripts.html
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.. _roadmap: developer/roadmap.html
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What changes/features are to expect ?
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=====================================
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If you're interested in CloudKitty's evolution, see the project's `roadmap`_ .
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.. _hashmap: user/rating/hashmap.html
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