Table of Contents

• What is the VLO?
• What should I read?
• Setting up
  • Preparing for release
• Using the VLO
  • Running an import

What is the VLO?

Using the VLO faceted browser, you can browse metadata by facet. It consists of three software components: a Solr server with VLO specific configuration, an importer and a web application front end.

For more information, see the wiki page.

What should I read?

• README This file; a general introduction
• DEVELOPMENT Information for developers
• DEPLOYMENT Instructions on how to deploy a fresh VLO installation
• UPGRADE Instructions on how to upgrade an existing VLO installation
• CHANGES A list of changes per release
• LICENSE Licensing information

Building

Build the project using Maven in the project root, or use the build.sh script, which will use a docker image with the correct version of Java and Maven to build. See the script source for more details.

Running the VLO

After a successful deployment and configuration, you should be able to browse to the VLO web app and browse the imported records. You can also run the VLO locally using the docker image (see compose_vlo)

If the VLO is empty, you will need to run an import first.

Running an import

To run an import, go the bin child directory of the VLO application directory and run

./vlo_solr_importer.sh

as the appropriate user (e.g. vlouser).

It's advisable to run this in a detached background process (for example using screen) because an import can take quite a long time depending on the amount of records to be imported. Also make sure that enough memory is available. Some VM parameters are configured inside the script.

Some progress information is logged to a file log/vlo-importer.log. It gets rotated automatically by the import process.

For a fresh import, even when the VLO is not configured to delete all documents from the index first, you can simply remove the contents of the Solr data directory (check server configuration documentation for the exact location).