Many admins confuse "update nexus library location" with "add a secondary library location." If you don't want to move historical data, just add a new drive:

This doesn't update the location for existing libraries but redirects new libraries. To fully unify, you would need to copy blobs via the rex script or Nexus API.

Nexus is a popular repository manager used in software development to manage dependencies, artifacts, and libraries. The Nexus library location refers to the directory or repository where libraries and dependencies are stored. It's essential to keep this location up-to-date to ensure that your project uses the latest versions of dependencies.

Example Configuration Update

# Before update
nexus.library.location=/old/location/nexus-library
# After update
nexus.library.location=/new/location/nexus-library

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
 * Updates the Nexus library location.
 */
public class NexusLibraryLocationUpdater {
    private static final Logger logger = LoggerFactory.getLogger(NexusLibraryLocationUpdater.class);
/**
     * Updates the Nexus library location.
     *
     * @param newLocation the new location of the Nexus library
     */
    public void updateLibraryLocation(String newLocation) {
        // Validate new location
        if (!isValidLocation(newLocation)) {
            logger.error("Invalid new location: {}", newLocation);
            return;
        }
// Update configuration
        Properties properties = new Properties();
        properties.load(new FileInputStream("/etc/nexus/nexus.properties"));
        properties.setProperty("nexus.library.location", newLocation);
        properties.store(new FileOutputStream("/etc/nexus/nexus.properties"), null);
// Restart Nexus service
        restartNexusService();
    }
/**
     * Validates the new location.
     *
     * @param location the location to validate
     * @return true if the location is valid, false otherwise
     */
    private boolean isValidLocation(String location) 
        File file = new File(location);
        return file.exists() && file.canWrite();
/**
     * Restarts the Nexus service.
     */
    private void restartNexusService() 
        // Restart service using command
        String[] commands = "sudo", "service", "nexus", "restart";
        try 
            Runtime.getRuntime().exec(commands);
         catch (IOException e) 
            logger.error("Error restarting Nexus service", e);
}

Before diving into the terminal commands, let's understand the common scenarios that force a location change:

There are several reasons why you might need to update the Nexus library location:

Finally, update your project's dependencies to use the new library location:

Change the base directory (sonatype-work) before first run

Move existing Nexus data

Change blob store location (via Admin UI)