Mark Belanger wrote: > Matthew Miller wrote: >> On Mon, Dec 18, 2006 at 04:17:59PM -0500, Mark Belanger wrote: >>> 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). >> >> Do you mean that there's no *access* to the console, or that it doesn't >> *respond* on the console? > > X is frozen, no way to switch the console(i.e. Ctrl-Alt-F1, > Ctrl-Alt-Backspace), > and no way to access the machine remotely. if you don't need X running, I'd stop loading it entirely (edit /etc/inittab, and change the default runlevel to 3), and before your app hangs, log onto the system console, and leave this command running as root... # tail -f /var/log/messages /var/log/secure this way, any error logging will be displayed as the system crashes.