Talend Artifact Repository is based on Nexus Repository Manager OSS.
Unzip the new Nexus 3.x installation archive.
Stop and backup the existing Nexus 3.x instance.
In the <NewNexusInstallationDirectory>/nexus-3.x.x-x/bin/nexus.vmoptions
file of the new Nexus 3.x instance, update the configuration of karaf.data and Djava.io.tmpdir to the existing Nexus 3.x instance.
Start the new Nexus 3.x instance. It will perform the upgrade automatically
during startup. If you installed nexus as a service, you need to change the
service setting as needed.
