93c094755d
This patch removes some duplications which we have since the Admin Guide for Ceilometer exists. The Measurements section is moved under contributing, as the list of meters is now moved to OPenStack Manuals. The corresponding patch sets available here: https://review.openstack.org/#/q/status:open+project:openstack/openstack-manuals+branch:master+topic:telemetry-measurements,n,z Change-Id: I2bdf6c929136df43dad98758e5ac6f4e50f20d61
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Copyright 2012 Nicolas Barcet for Canonical
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Licensed under the Apache License, Version 2.0 (the "License"); you may
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not use this file except in compliance with the License. You may obtain
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a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations
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under the License.
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.. _folsom:
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====================
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Folsom
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====================
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This is the first release (Version 0.1) of Ceilometer. Please take all appropriate
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caution in using it, as it is a technology preview at this time.
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Version of OpenStack
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It is curently tested to work with OpenStack 2012.2 Folsom. Due to its use of
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openstack-common, and the modification that were made in term of notification
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to many other components (glance, cinder, quantum), it will not easily work
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with any prior version of OpenStack.
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Components
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Currently covered components are: Nova, Nova-network, Glance, Cinder and
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Quantum. Notably, there is no support yet for Swift and it was decided not
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to support nova-volume in favor of Cinder. A detailed list of meters covered
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per component can be found at in :ref:`measurements`.
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Nova with libvirt only
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Most of the Nova meters will only work with libvirt fronted hypervisors at the
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moment, and our test coverage was mostly done on KVM. Contributors are welcome
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to implement other virtualization backends' meters.
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Quantum delete events
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Quantum delete notifications do not include the same metadata as the other
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messages, so we ignore them for now. This isn't ideal, since it may mean we
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miss charging for some amount of time, but it is better than throwing away the
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existing metadata for a resource when it is deleted.
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Database backend
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The only tested and complete database backend is currently MongoDB, the
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SQLAlchemy one is still work in progress.
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Installation
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The current best source of information on how to deploy this project is found
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as the devstack implementation but feel free to come to #openstack-metering on
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freenode for more info.
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Volume of data
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Please note that metering can generate lots of data very quickly. Have a look
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at the following spreadsheet to evaluate what you will end up with.
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http://wiki.openstack.org/EfficientMetering#Volume_of_data
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