LinuxQuestions.org
Visit Jeremy's Blog.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices


Reply
  Search this Thread
Old 07-31-2003, 04:42 PM   #1
Disruptor
LQ Newbie
 
Registered: Jul 2003
Location: Hellas - Crete - Heraklion
Distribution: Red Hat 9
Posts: 24

Rep: Reputation: 15
Daily mysterious rebooting at 10:55 sharp


Hi all you guys! You know I am having a small problem with my RedHat linux 8
box: each night exactly at 10:55 it reboots out of the blue no matter what. I performed a little search on the Web and didn't find something close to my problem other than chkrootkit. I tried it but it says everything is O.K. I suspect that I have been a victim of an attack of some sort because the computer I am sitting at is on-line tweentyfour hours a day wihout a firewall, on a network which is continuously under attacks (scanports, viruses and the like ...). I don't have the experience that my (windows-addicted) collegues have around here and I don't know what to do. So any help/ideas/hints on this would be appreciated. After all, we've got a legacy to consider: Our OS is said to be one of the most stable, safe and virus-free ones around, right?? So, what do you guys think??

P.S.: No that I am thinking about it: could all these be kernel crashings?? I am running a custom kernel (2.4.21), so I guess I should give it a try and fall-back to the default one for a while to see if it makes any difference. Anyway, how can I verify that a kernel-crash happened??
 
Old 07-31-2003, 04:54 PM   #2
slakmagik
Senior Member
 
Registered: Feb 2003
Distribution: Slackware
Posts: 4,113

Rep: Reputation: Disabled
Only thing that springs to mind is to check your cron file for an init 6 command. That would suck.
 
Old 07-31-2003, 05:01 PM   #3
Thetargos
Senior Member
 
Registered: Mar 2003
Location: Mexico City
Distribution: Fedora, Ubuntu & Mint
Posts: 1,679

Rep: Reputation: 45
It may be a shot in the dark, but I think your problem may be due to a cron script executing the reboot command. Also you don't say if the computer just reboots out of the nothing or if the whole shutdown sequence is started (in that case it could be due to the cron service, which is a programable time events on the computer, such as rebooting)

Another idea to see if you were victim of a kernel panic or oops, check your /var/log/messages file to see what's there at any date at 10:55 pm. There should be some information if it were related to kernel.

I use a custom built 2.4.21 CK patched kernel on RH 9 and had no problems with it whatsoever. So try firts checking the cron thing, or if you still have the stock kernel installed and on your grub.conf file, try booting with it and see if the problem occurs.

You mentioned you are on a network without a firewall, but remember that RH has a built in firewall, I don't know what command would let you configure the firewall on RH 8, but try this:
redhat-securitylevel, also check the init.d/iptables file, to add some more restrictive rules to your local firewall (man iptables) and I'd suggest you look for a good iptables HowTo.

Again, this might be a shot in the dark, but I hope this helps.

Thetargos.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Sharp thoyyib Linux - Hardware 1 12-01-2005 06:53 AM
Mysterious Slowing billquinn Linux - General 2 09-14-2005 06:16 PM
Mysterious restart ec3042 Linux - General 12 04-20-2005 10:55 PM
Mysterious X crash theeeg Linux - Software 3 08-09-2004 05:15 AM
Mysterious Directory Dooley Mandriva 3 07-03-2004 01:26 AM


All times are GMT -5. The time now is 08:49 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration