57 lines
1.6 KiB
ReStructuredText
57 lines
1.6 KiB
ReStructuredText
:title: Sharing data between 2 couchdb databases
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:description: Sharing data between 2 couchdb databases
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:keywords: docker, example, package installation, networking, couchdb, data volumes
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.. _running_couchdb_service:
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CouchDB Service
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===============
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.. include:: example_header.inc
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Here's an example of using data volumes to share the same data between
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2 CouchDB containers. This could be used for hot upgrades, testing
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different versions of CouchDB on the same data, etc.
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Create first database
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---------------------
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Note that we're marking ``/var/lib/couchdb`` as a data volume.
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.. code-block:: bash
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COUCH1=$(sudo docker run -d -v /var/lib/couchdb shykes/couchdb:2013-05-03)
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Add data to the first database
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------------------------------
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We're assuming your docker host is reachable at `localhost`. If not,
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replace `localhost` with the public IP of your docker host.
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.. code-block:: bash
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HOST=localhost
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URL="http://$HOST:$(sudo docker port $COUCH1 5984)/_utils/"
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echo "Navigate to $URL in your browser, and use the couch interface to add data"
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Create second database
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----------------------
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This time, we're requesting shared access to $COUCH1's volumes.
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.. code-block:: bash
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COUCH2=$(sudo docker run -d -volumes-from $COUCH1 shykes/couchdb:2013-05-03)
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Browse data on the second database
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----------------------------------
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.. code-block:: bash
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HOST=localhost
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URL="http://$HOST:$(sudo docker port $COUCH2 5984)/_utils/"
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echo "Navigate to $URL in your browser. You should see the same data as in the first database"'!'
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Congratulations, you are running 2 Couchdb containers, completely
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isolated from each other *except* for their data.
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