Kernel Panic
From K12LTSP Wiki
Describe Kernel Panic here: a terrible sinking feeling where you suddenly wonder if you made back ups recently and whether or not you should cancel your dinner plans...
server and network : FC3 k12ltsp 4.2 2.4Gig Dual Xeon/ 40Gig SATA gigabit nic on server/ 10/100 switches 35+ clients mix of fat and thin clients.
Recently all of my compaq deskpros stopped responding and were pushing kernel panic errors: Here's the history of what I did with commentary
983 yum update #ck to see if I'm just running bad software but probably a bad idea to introduce more variables into a bad situation
984 ntsysv # ck to see if nfs / dhcpd/ and tftp were running but ntsysv is not a restart switch
985 /sbin/ifconfig #ck to see if there were collisions on the network
986 tcpipdump # couldn't remember the command to see the IP stream
987 apropos kernel #looking for the command to get kernel v for verification
988 uname -r #kernel v
989 top # see what's what
990 pkill -users # failed attempt to kill users
991 find / -name pkillusers #looking for script to kill users
- I'd gone to #ltsp to seek help
994 cat /etc/hosts #cking to see if the hosts file is playing nicely
995 top #where are my resources going by now I'm running kde /system monitor/ system guard
998 gdm-safe-restart #this from bob_too from the irc list
999 top
1000 showmount -e #showing up with errors in the RPC
1003 service nfs reload ## possible loss of user services; told users to save work
1004 service portmap status # don't recall output
1005 showmount -e
1007 service nfs restart#failed on mountd and quotas shutdowm
Restarting clients; worked
1009 exportfs -ra
1010 df -h #possible reason for failure /home is filling up
1014 gkrellm #sys check
1016 history 50 #where
The basis for this report.
Trying to run Fedora Core 1 as a rescue disk is as easy as you'd think... put boot disk FC1 in 3.1 type <verbatim> linux rescue </verbatim> install prompt... don't PANIC if you plow on it'll prompt you for your mouse and keyboard
It'll give you a bash prompt and you can begin working your magic... :)
my best friend recently has been <verbatim> $e2fsck -cDv /dev/sda1 </verbatim> remember to
sync
before
exit
otherwise your changes won't be saved
