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https://github.com/ceph/ceph
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144 lines
3.3 KiB
ReStructuredText
144 lines
3.3 KiB
ReStructuredText
========================================
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obsync -- The object synchronizer tool
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========================================
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.. program:: obsync
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Synopsis
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========
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| **obsync** [ *options* ] *source-url* *destination-url*
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Description
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===========
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**obsync** is an object syncrhonizer tool designed to transfer objects
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between different object storage systems. Similar to rsync, you
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specify a source and a destination, and it will transfer objects
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between them until the destination has all the objects in the
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source. Obsync will never modify the source -- only the destination.
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By default, obsync does not delete anything. However, by specifying
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``--delete-after`` or ``--delete-before``, you can ask it to delete
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objects from the destination that are not in the source.
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Target types
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============
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Obsync supports S3 via ``libboto``. To use the s3 target, your URL
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should look like this: ``s3://host-name/bucket-name``
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Obsync supports storing files locally via the ``file://`` target. To
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use the file target, your URL should look like this:
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``file://directory-name``
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Alternately, give no prefix, like this: ``./directory-name``
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Obsync supports storing files in a RADOS Gateway backend via the
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``librados`` Python bindings. To use the ``rgw` target, your URL
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should look like this: ``rgw:ceph-configuration-path:rgw-bucket-name``
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Options
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=======
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.. option:: -h, --help
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Display a help message
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.. option:: -n, --dry-run
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Show what would be done, but do not modify the destination.
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.. option:: -c, --create-dest
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Create the destination if it does not exist.
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.. option:: --delete-before
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Before copying any files, delete objects in the destination that
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are not in the source.
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.. option:: -L, --follow-symlinks
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Follow symlinks when dealing with ``file://`` targets.
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.. option:: --no-preserve-acls
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Don't preserve ACLs when copying objects.
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.. option:: -v, --verbose
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Be verbose.
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.. option:: -V, --more-verbose
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Be really, really verbose (developer mode)
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.. option:: -x SRC=DST, --xuser SRC=DST
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Set up a user translation. You can specify multiple user
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translations with multiple ``--xuser`` arguments.
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.. option:: --force
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Overwrite all destination objects, even if they appear to be the
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same as the source objects.
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Environment variables
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=====================
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.. envvar:: SRC_AKEY
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Access key for the source URL
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.. envvar:: SRC_SKEY
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Secret access key for the source URL
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.. envvar:: DST_AKEY
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Access key for the destination URL
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.. envvar:: DST_SKEY
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Secret access key for the destination URL
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.. envvar:: AKEY
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Access key for both source and dest
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.. envvar:: SKEY
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Secret access key for both source and dest
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.. envvar:: DST_CONSISTENCY
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Set to 'eventual' if the destination is eventually consistent. If the destination
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is eventually consistent, we may have to retry certain operations multiple times.
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Examples
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========
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::
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AKEY=... SKEY=... obsync -c -d -v ./backup-directory s3://myhost1/mybucket1
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Copy objects from backup-directory to mybucket1 on myhost1::
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SRC_AKEY=... SRC_SKEY=... DST_AKEY=... DST_SKEY=... obsync -c -d -v s3://myhost1/mybucket1 s3://myhost1/mybucket2
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Copy objects from mybucket1 to mybucket2
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Availability
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============
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**obsync** is part of the Ceph distributed file system. Please refer
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to the Ceph wiki at http://ceph.newdream.net/wiki for more
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information.
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