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Old 04-20-2010, 07:49 AM   #1
rjo98
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How to tell how long last reboot took


Is there certain lines I could look through in a certain log file to give me a rough estimate of how long the last, or last couple, reboots of a server took?
 
Old 04-20-2010, 08:12 AM   #2
ncsuapex
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I'd say check out /var/log/messages and see and look for the time you think it was rebooted and go from there
 
Old 04-20-2010, 08:45 AM   #3
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Linux command w will show you the details

or

cat /proc/uptime
 
Old 04-20-2010, 09:05 AM   #4
ncsuapex
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^ I think he wants to know how long the actual reboot took.... Not how long the server has been up.
 
Old 04-20-2010, 09:08 AM   #5
rjo98
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Correct, I want to know how long the server is down for while it reboots, on average, or at least the last time.

The problem is is that I dont know when the last time it was rebooted. Can i just grep for certain phrases, then subtract the time stamps to give me the time?
 
Old 04-20-2010, 09:59 AM   #6
rjo98
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I just looked on the server, its been up for almost 100 days, but my messages files only go back to March, and that ones only 15k :-(

Can anyone think of another way to figure this out?
 
Old 04-20-2010, 12:24 PM   #7
no2498
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? does it not start deleting cache files after it fills up
may be why your log is short

hope this helps
 
Old 04-20-2010, 12:28 PM   #8
rjo98
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yeah, it overwrites them as time goes by, not sure why they are so small though.
 
Old 04-20-2010, 07:18 PM   #9
chrism01
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The settings for the num of logfiles preserved is in the logrotate configs

logrotate.conf
logrotate.d
 
Old 04-20-2010, 07:32 PM   #10
elaguilas
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is goood

is good
 
Old 04-21-2010, 05:25 AM   #11
rjo98
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it looks like i'm keeping 4 files, but i dont know why these ones are so small.
 
  


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