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