Does the reboot command generate log entries?

[thewho?]

Hello,
N4000, HP-UX 11.0.
I know the shutdown commands logs to /etc/shutdownlog and syslog, but does anybody know if the reboot command (particularly 'reboot -qh') logs anywhere?
We had a problem with high temperature and last entry in syslog said that it reached a critical level but it doesn't say exactly when the system was brought down (because envd used reboot).
Thanks in advance,
Luis

[Eric Ladner]

Look at "last -R | grep reboot" and see if the reboot entries show up there.

Another thing (if it was a recent reboot) you can compare timestamps in the syslog.log and OLDsyslog.log (i.e. tail -1 /var/adm/OLDsyslog.log; head -1 /var/adm/syslog.log)

Eric

[Lou Zirko_1]

I have not tested it, but the man page for reboot states that reboot writes a message to /etc/shutdownlog if it exists with containing the time of shutdown, who ran reboot and the reason.

It is possible that your system was brought down by other means. If the processor failed it could have halted the system but recovered when it attempted to reboot. I do know that it the system issues it's own reboot after a panic it is noted in the log along with the isr.ior entry. They also have reboot entries but do not specify a user.


Lou Zirko

[Sanjay_6]

Hi Luis,

Use
last -5 reboot

It will list the 5 times your system was booted. The top entry will be for present boot.

Hope this helps.

Thanks

[linuxfan]

Hi Luis,


Normally reboot logs to /etc/shutdownlog but when invoked with -q option it doesn't do any logging, and it ignores the -t and -m options as well.

Look at the man page for reboot (-q option)

-HTH
Ramesh

[Bill McNAMARA_1]

If you have ems configured you'll get an email notification in the syslog:
Sep 19 10:35:41 kibo EMS [1235]: ----- EMS Monitor Restart due to system reboot
----- Title: FC60_monitor Command: /usr/sbin/stm/uut/bin/tools/monitor/fc6
0mon Vendor: Hewlett-Packard Co. Version: A.01.05 To obtain a list of
currently monitored resources, execute the following: /opt/resmon/bin/resdata -
M 1652016795

A random panic should at least generate a hpmc tombstone sig /var/tombstones and a crash dump in /var/adm/crash

My shutdownlog in anycase does give info on reboot as well as shutdowns.

You should also have a look a t the systems GSP to have a look at chassis logs.

Note that EMS will generate warnings on temperature problems. You should ensure diagnostics is on.

Bill

[thewho?]

Thanks for all your prompt replies.
I had checked the OLDsyslog, /etc/shutdownlog and EMS, they tell me when the system came back up but not when the reboot command was issued (because it had the -q in it).
I didn't know about the last -R command but again it tells me when the system came back up.
I was hoping for some hidden log file that is always updated by the reboot command even when it's run with the -q.
Luis