github.com/guilhermebr/docker@v1.4.2-0.20150428121140-67da055cebca/docs/sources/examples/couchdb_data_volumes.md (about)

     1  page_title: Dockerizing a CouchDB service
     2  page_description: Sharing data between 2 couchdb databases
     3  page_keywords: docker, example, package installation, networking, couchdb, data volumes
     4  
     5  # Dockerizing a CouchDB service
     6  
     7  > **Note**: 
     8  > - **If you don't like sudo** then see [*Giving non-root
     9  >   access*](/installation/binaries/#giving-non-root-access)
    10  
    11  Here's an example of using data volumes to share the same data between
    12  two CouchDB containers. This could be used for hot upgrades, testing
    13  different versions of CouchDB on the same data, etc.
    14  
    15  ## Create first database
    16  
    17  Note that we're marking `/var/lib/couchdb` as a data volume.
    18  
    19      $ COUCH1=$(docker run -d -p 5984 -v /var/lib/couchdb shykes/couchdb:2013-05-03)
    20  
    21  ## Add data to the first database
    22  
    23  We're assuming your Docker host is reachable at `localhost`. If not,
    24  replace `localhost` with the public IP of your Docker host.
    25  
    26      $ HOST=localhost
    27      $ URL="http://$HOST:$(docker port $COUCH1 5984 | grep -o '[1-9][0-9]*$')/_utils/"
    28      $ echo "Navigate to $URL in your browser, and use the couch interface to add data"
    29  
    30  ## Create second database
    31  
    32  This time, we're requesting shared access to `$COUCH1`'s volumes.
    33  
    34      $ COUCH2=$(docker run -d -p 5984 --volumes-from $COUCH1 shykes/couchdb:2013-05-03)
    35  
    36  ## Browse data on the second database
    37  
    38      $ HOST=localhost
    39      $ URL="http://$HOST:$(docker port $COUCH2 5984 | grep -o '[1-9][0-9]*$')/_utils/"
    40      $ echo "Navigate to $URL in your browser. You should see the same data as in the first database"'!'
    41  
    42  Congratulations, you are now running two Couchdb containers, completely
    43  isolated from each other *except* for their data.