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Old 08-28-2012, 01:53 AM   #1
depam
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Server unresponsive and no server logs to check on


I am faced with a problem where the Debian Server became unresponsive. Nothing can be seen on monitor and after booting up the server again, logs doesn't show anything (syslog, messages, kern.log). This keeps on happenning like every 2 to 3 days. Do you have any clue what can be done to check the root cause? From experience, can this be a disk failure that cannot be written into those logs?
 
Old 08-28-2012, 05:28 AM   #2
chrism01
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You need to write a script to check the cpu/mem and disk eg
Code:
top -b -n 1
df -h
& save results to disk in cron say every 5 mins.
There are lots of monitoring tools available, but that's the quick and dirty way to hopefully get an idea where the problem lies.
 
Old 08-28-2012, 06:49 AM   #3
depam
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I have already run nmon and it should capture all the data. However, i am afraid that if it goes down, it wont be able to write data into that especially that i am suspecting its a sas controller causing this. Is there any easier tool that dumps out kernel error messages remotely. We have also onfigured the rsyslogd but still waiting if we can get from it when server dies.
 
Old 08-28-2012, 07:54 AM   #4
sundialsvcs
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It certainly sounds like a hardware problem and I would probably respond by pre-emptively replacing the box. At least the mobo.

When you say "unresponsive," well, "unresponsive to what, exactly?" Can you go there? What is and is not it "responsive" to? (Pulse? Breathing?)

Last edited by sundialsvcs; 08-28-2012 at 07:55 AM.
 
  


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