2015-06-08 00:58:53 +00:00
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<!--[metadata]>
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+++
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title = "Ceph RADOS storage driver"
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description = "Explains how to use the Ceph RADOS storage driver"
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keywords = ["registry, service, driver, images, storage, ceph, rados"]
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+++
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<![end-metadata]-->
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2015-04-23 16:13:52 +00:00
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# Ceph RADOS storage driver
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An implementation of the `storagedriver.StorageDriver` interface which uses
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[Ceph RADOS Object Storage][rados] for storage backend.
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## Parameters
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The following parameters must be used to configure the storage driver
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(case-sensitive):
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* `poolname`: Name of the Ceph pool
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* `username` *optional*: The user to connect as (i.e. admin, not client.admin)
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* `chunksize` *optional*: Size of the written RADOS objects. Default value is
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4MB (4194304).
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This drivers loads the [Ceph client configuration][rados-config] from the
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following regular paths (the first found is used):
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* `$CEPH_CONF` (environment variable)
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* `/etc/ceph/ceph.conf`
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* `~/.ceph/config`
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* `ceph.conf` (in the current working directory)
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## Developing
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To include this driver when building Docker Distribution, use the build tag
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`include_rados`. Please see the [building documentation][building] for details.
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[rados]: http://ceph.com/docs/master/rados/
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[rados-config]: http://ceph.com/docs/master/rados/configuration/ceph-conf/
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[building]: https://github.com/docker/distribution/blob/master/docs/building.md#optional-build-tags
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