Quoting Mark Belanger <mark_belanger at ltx.com>: > I have many different centos machines that are hanging > regulary. I believe this is due to something our application > is doing - not a centos specific problem. > > When the machines hang, there is no access to the console > or remote access(ssh, rsh, etc). > > Any tips on debugging this issue? It is becoming quite a > show stopper as we migrate our product from Solaris to > Linux. Consider setting up serial console (you'll still be able to run X11 on your keyboard/monitor). Or alternatively, you might try setting up network console. Check out serial-console.txt and networking/netconsole.txt in kernel documentation.