74 lines
2.8 KiB
ReStructuredText
74 lines
2.8 KiB
ReStructuredText
Copying a Database
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==================
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MongoDB >= 4.2
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--------------
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Starting in MongoDB version 4.2, the server removes the deprecated ``copydb`` command.
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As an alternative, users can use ``mongodump`` and ``mongorestore`` (with the ``mongorestore``
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options ``--nsFrom`` and ``--nsTo``).
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For example, to copy the ``test`` database from a local instance running on the
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default port 27017 to the ``examples`` database on the same instance, you can:
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#. Use ``mongodump`` to dump the test database to an archive ``mongodump-test-db``::
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mongodump --archive="mongodump-test-db" --db=test
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#. Use ``mongorestore`` with ``--nsFrom`` and ``--nsTo`` to restore (with database name change)
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from the archive::
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mongorestore --archive="mongodump-test-db" --nsFrom='test.*' --nsTo='examples.*'
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Include additional options as necessary, such as to specify the uri or host, username,
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password and authentication database.
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For more info about using ``mongodump`` and ``mongorestore`` see the `Copy a Database`_ example
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in the official ``mongodump`` documentation.
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MongoDB <= 4.0
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--------------
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When using MongoDB <= 4.0, it is possible to use the deprecated ``copydb`` command
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to copy a database. To copy a database within a single ``mongod`` process, or
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between ``mongod`` servers, connect to the target ``mongod`` and use the
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:meth:`~pymongo.database.Database.command` method::
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>>> from pymongo import MongoClient
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>>> client = MongoClient('target.example.com')
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>>> client.admin.command('copydb',
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fromdb='source_db_name',
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todb='target_db_name')
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To copy from a different mongod server that is not password-protected::
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>>> client.admin.command('copydb',
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fromdb='source_db_name',
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todb='target_db_name',
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fromhost='source.example.com')
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If the target server is password-protected, authenticate to the "admin"
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database::
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>>> client = MongoClient('target.example.com',
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... username='administrator',
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... password='pwd')
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>>> client.admin.command('copydb',
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fromdb='source_db_name',
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todb='target_db_name',
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fromhost='source.example.com')
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See the :doc:`authentication examples </examples/authentication>`.
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If the **source** server is password-protected, use the `copyDatabase
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function in the mongo shell`_.
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Versions of PyMongo before 3.0 included a ``copy_database`` helper method,
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but it has been removed.
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.. _copyDatabase function in the mongo shell:
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http://mongodb.com/docs/manual/reference/method/db.copyDatabase/
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.. _Copy a Database:
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https://www.mongodb.com/docs/database-tools/mongodump/#std-label-mongodump-example-copy-clone-database
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