Install the new Apache Tomcat server as well as the Talend Administration Center
.war file.
If you have previously set a CATALINA_HOME system variable, make sure to
update it.
Note that, if you want to rename the Talend Administration Center application during
migration, the best practice is to rename the backup of the old application, in
order to always keep the same URL for the application that is currently
installed. For example, rename the backup application
org.talend.administrator.old and keep the
org.talend.administrator default name for the
application that is currently installed.