To change the libresource listening port you surely don't have to reinstall it.
In fact, it will depend on the installation that you finally want.
A way to do it
- stop libresource server
- edit JONAS_ROOT/conf/libresourceConfig.properties (not libresourceDS.properties) to specify the expected adress of your server. (kernel.serverUrl=http://localhost:81)
- edit JONAS_ROOT/conf/server.xml to change the listening port of tomcat. (search 9000 and replace it to the desired port)
- start libresource server.
Caution
under linux if you are not the root user you are not allowed to run an application that listen on a port below 1024. So to solve this, you can use either:
- an apache with a virtual host
- or a port forwarding with iptable
Some more information about using an apache as front end is available here:
apache/jonas/LibreSourceRegards,
Seb