topic Re: Where to find the system logs after reboot in Operating System - HP-UX

Where to find the system logs after reboot

Wilfredo R. Castro — Wed, 04 Aug 2004 19:58:25 GMT

I need your help !
My HP L class server always rebooted in the morning automatically. But I dont know where I can find the LOGS on why the machine rebooted ?

I suspect that it exceeded the allowable temperature needed.

Thank you in advance for the help.

Re: Where to find the system logs after reboot

Con O'Kelly — Wed, 04 Aug 2004 20:03:48 GMT

Hi

First off check /etc/shutdownlog.

Also check
/var/adm/crash
/var/tombstones

There should be a crash dump in /var/adm/crash. You will most likely need to log a call with HP so that they can examine the crash dumps and pinpoint the reason for the system crash.

Cheers
Con

Re: Where to find the system logs after reboot

Michael Tully — Wed, 04 Aug 2004 20:06:35 GMT

Check:

/etc/shutdownlog
/var/adm/syslog/syslog.log

You may have a crash dump in here.
/var/adm/crash

If you have one you an analyse it with q4 or get HP to do it if you have a support contract. Was the room over 35 degress celcius?

Re: Where to find the system logs after reboot

Wilfredo R. Castro — Wed, 04 Aug 2004 20:43:16 GMT

Thanks for the replies, but I cannot find any errors among those logs :

1.
/etc/shutdown :
00:01 Tue May 13, 2003. Halt:
21:14 Fri Nov 7, 2003. Halt:
09:34 Sat Mar 13, 2004. Halt:
(why is that the last halt was Mar 13? while it was just rebooted Aug 5).

2.
syslog includes only the initialization.

3.
No /var/adm/crash file present
(Does this mean that it doesn't crash?)

How do I know what causes the reboot? is there any other way? I even go to GSP/SL to check but I can't seemed to find any errors for defective hardware ..etc.

Thanks for the replies.

Re: Where to find the system logs after reboot

Michael Tully — Wed, 04 Aug 2004 20:55:05 GMT

Have a look at the tail of /var/adm/syslog/OLDsyslog.log
There could be a message that the system was rebooted because of the temp. (see /etc/envd.conf) In saying that there should be an entry in syslog (the old one) according to the man pages of envd

man envd

Re: Where to find the system logs after reboot

Patrick Wallek — Wed, 04 Aug 2004 20:57:41 GMT

You should also check the /var/adm/OLDsyslog.log file. If it is rebooting every morning at the same time, with no indications in any of the log files, then I would suspect a power issue. Is this machine on a UPS? Are you somehow losing power during the night and the UPS is draining causing the machine to lose power? If power is then restored later the machine would boot automatically.

Re: Where to find the system logs after reboot

Wilfredo R. Castro — Wed, 04 Aug 2004 21:15:41 GMT

Patrick,

You maybe right and I turn on the UPS monitoring. I also suspected that since I haven't seen any error logs that could lead to a defective hardware.

I also haven't seen anything wrong with the OLDSyslog.

Re: Where to find the system logs after reboot

Bill Hassell — Wed, 04 Aug 2004 21:25:59 GMT

The directory /var/adm/crash must exist. If it doesn't, then the system will crash and never report the reason. Create the directory, then edit the file /etc/rc.config.d/savecrash to save crash dumps. You should also look at the log kept by the GSP board. On the console, type CTRL-B (the ctrl key plus the letter b). You'll get a GSP login request. The login and password are probably not set, just press enter a couple of times. Then use the ER command to look at the logs. If you see a high temp warning, you have much bigger problems! All the computers, tape drives, printers, disk arrays, etc in that room may be damaged by extreme temperatures.

The L-class will turn itself off before it is damaged but tape drives and printers and disks will be permanently damaged. Make sure your computer room has a temperature controlled circuit breaker that removes all power when the temperature is too high. I have seen thousands of dollars of equipment destroyed because someone turned off the air conditioner by accident.

Re: Where to find the system logs after reboot

Wilfredo R. Castro — Wed, 04 Aug 2004 21:45:59 GMT

Hi Bill,

Thanks for the reply. I have a folder /var/adm/crash for there's no file exists inside the folder.

I've also check the GSP--> ER but I haven't seen anything about temperature problem. Should we say that I dont dont have a temperature problem?

Re: Where to find the system logs after reboot

Steven E. Protter — Wed, 04 Aug 2004 22:08:22 GMT

Do a quick bdf and see if /var mounted. Sometimes in these situations you can't find the logs because /var didn't mount.

The prior answers were excellent and I have nothing to add. Except what I just did.

:-)

SEP