Dealing with Novell Linux support found about their supportconfig script, it’s really useful while troubleshooting systems remotely (or on-site :D).
It’s basically a bash script that collects data about a linux system (it was made for SLES, but should work with any linux). The result is a nice tarball that you can take with you to analyze the system offsite.
The software: http://www.novell.com/communities/node/2332/supportconfig-linux
Basic health check guide: http://www.novell.com/communities/node/4097/basic-server-health-check-supportconfig