2012-11-14 22:57:51 +00:00
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====================
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RADOS Object Store
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====================
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Ceph's :abbr:`RADOS (Reliable Autonomic Distributed Object Store)` Object Store
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is the foundation for all Ceph clusters. When you use object store clients such
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as the CephFS filesystem, the RESTful Gateway or Ceph block devices, Ceph reads
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data from and writes data to the object store. Ceph's RADOS Object Stores
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consist of two types of daemons: Object Storage Daemons (OSDs) store data as
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objects on storage nodes; and Monitors maintain a master copy of the cluster
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map. A Ceph cluster may contain thousands of storage nodes. A minimal system
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will have at least two OSDs for data replication.
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.. ditaa:: +---------------+ +---------------+
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| OSDs | | Monitor |
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+---------------+ +---------------+
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.. raw:: html
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<table cellpadding="10"><colgroup><col width="33%"><col width="33%"><col width="33%"></colgroup><tbody valign="top"><tr><td><h3>Config and Deploy</h3>
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Once you have installed Ceph packages, you must configure. There are a a few
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required settings, but most configuration settings have default values.
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Following the initial configuration, you must deploy Ceph. Deployment consists
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of creating and initializing data directories, keys, etc.
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.. toctree::
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:maxdepth: 2
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Configuration <configuration/index>
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Deployment <deployment/index>
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.. raw:: html
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</td><td><h3>Operations</h3>
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Once you have a deployed Ceph cluster, you may begin operating your cluster.
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.. toctree::
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:maxdepth: 2
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Operations <operations/index>
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2013-04-18 01:24:24 +00:00
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.. toctree::
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:maxdepth: 1
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Man Pages <man/index>
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.. toctree::
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:hidden:
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troubleshooting/index
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2012-11-14 22:57:51 +00:00
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.. raw:: html
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</td><td><h3>APIs</h3>
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Most Ceph deployments use Ceph `block devices`_, the `gateway`_ and/or the
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`CephFS filesystem`_. You may also develop applications that talk directly to
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the Ceph object store.
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.. toctree::
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:maxdepth: 2
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APIs <api/index>
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.. raw:: html
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</td></tr></tbody></table>
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.. _block devices: ../rbd/rbd
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.. _CephFS filesystem: ../cephfs/
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.. _gateway: ../radosgw/
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