Hi All, I've got a machine with the following description: Dell Precision 530 Fully patched fedora Dual P4 Alteon Gigabit nic Services running: sshd, vsftpd, apache Periodically, it goes (mostly) dead. It looks like this: I can ping it. I can nmap it, and the services are all detected I cannot connect to any of the servers via a client (ie, ssh, ncftp, moz) I can telnet to the appropriate ports, and get connected. (I forget how to make an http server spew to a telnet client, but I've done it before) Both the terminal (through kvm) and console (serial, through to a concentrator on another machine) are dead in the water. If I unplug the fibre to the nic, the console + terminal report this. same for when I replug it in. Nothing happens with usb devices (just trying to see about waking it up) It's last uptime was a day and a half. this is the third time it's happened. I'm about to do hardware diagnostics on it, but am wondering if anyone has any idea about what else I should look at. I power-cycled the machine and booted off of a rescue CD - mounting the filesystems read-only - but there's nothing interesting that I can see (in /var/log, that is). If anyone knows of something I should look at, probable cause, etc - please let me know. Thanks for any help - Erik. e r i k w i l l i a m s o n erik@xxxxxxxxxxxxxxxx system admin . department of computer science . university of calgary
