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Hyrax Version 1.17.0 (23 Jan 2024)

OLFS Version 1.18.14 (23 Jan 2024)

OLFS-1.18.14 requires

The files install.html and/or docs/index.html may have additional information.


Build and install the libdap4 and bes projects.

Launch the bes (you can use besctl to do that).

Make sure there is a beslistener process running.

Check it out:

git clone

Build it:

ant server

(To make a distribution for release: ant server -DHYRAX_VERSION= -DOLFS_VERSION= )

Install it:

rm -rf $CATALINA_HOME/webapps/opendap*
cp build/dist/opendap.war $CATALINA_HOME/webapps

Launch it:


Configure it:

By default the OLFS will utilize it's bundled default configuration in the directory $CATALINA_HOME/webapps/opendap/WEB-INF/conf

In order to configure your system so that your configuration changes are persistent you will need to do one of the following:

  • For the user that will be running the OLFS (the Tomcat user), set the environment variable OLFS_CONFIG_DIR to an existing directory to which the Tomcat user has both read and write privileges.


  • Create the directory /etc/olfs and set it's permissions/ownership so that the Tomcat user has both read and write permission.

If both of these steps are done then priority is given to the environment variable.

Restart Tomcat. When it starts the OLFS will check these locations and then install a copy of its default configuration into the new spot.

Edit the configuration files as needed.

If, for example, your beslistener is not running on localhost:10022 then you'll need to edit the olfs.xml file in the configuration directory and adjust the and values to reflect your situation.

Relaunch it:


For the configuration changes to take effect.

See for information about this software, Installation instructions and NEWS.

About the Aggregation servlet

In src/opendap/aggregation we have a servlet that performs aggregation for use, initially, with NASA's EDSC (Earth Data Search Client). In that directory you will find a README along with some help in testing the servlet using curl. NB: I think this is no longer used but it is really pretty interesting, all the same.