Another method is a remote syslog server i believe its on wiki Op 7 mei 2012 18:34 schreef "Matthijs Kooijman" <[email protected]> het volgende:
> Hi Leonardo, > > > since I put a TPLINK WR741N v1.9 as a wi-fi client on my Fonera network, > > I'm experiencing unexpected reboots. > Unexpected reboots are hard to diagnose, unfortunately. The most common > reason for a reboot is the Fonera running out of memory, which triggers > a reboot. > > To diagnose this, you could try to set up a serial console, which allows > you to view the kernel output directly, even just before a reboot. > However, a serial console on the 2.0n requires some very delicate > soldering, which isn't an option for most people. If you want to try, > instructions are here: http://trac.fonosfera.org/fon-ng/wiki/serial > > An alternative would be to write all log entries to a file, so you can > see what happens just before the reboot. There is a fair chance that the > log entries just before the reboot (which are probably the most > interesting) are not written to the file, making this method useless. In > any case, the easiest way to set this up is to login through SSH and run > the following command: > > root@Fonera:~# logread -f > /etc/logread & > > This should create a file called /etc/logread, containing every message > logged by the kernel and some programs. After such an unexpected reboot, > check this file (and perhaps send it to me privately, there might be > private data in there). > > Be careful that keeping a log file like this could fill up your Flash > memory if left running for too long, so delete the file again when you > don't need it anymore. You can see the the free flash space by running > the "df" command, look at the /jffs line. > > Alternatively, you could log to an external flash stick, by connecting > it and replacing the /etc/logread line with /var/mounts/Disc-A1/logread > (or something like that). > > If this doesn't help to find the cause, you could use this command to > regularly write the current memory usage to a logfile: > > root@Fonera:~# while true; do date >> /etc/memusage; free|head -2|tail > -1 >> /etc/memusage; sleep 300; done& > > This creates a file called /etc/memusage, containg memory usage info for > every five minutes. This could help to see if the memory usage is > actually growing to 100% just before the reboot. The same caveat and > workaround for available flash space as above applies. > > If you have further questions, don't hesitate to ask. > > Gr. > > Matthijs > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (GNU/Linux) > > iEYEARECAAYFAk+n+ZgACgkQz0nQ5oovr7z8xgCfVTgWjByEg+0jXcYAz0A4Mmh+ > GpEAoMAJTGhAwP7EomP87nYnZLmFc+nK > =EViP > -----END PGP SIGNATURE----- > > _______________________________________________ > Development mailing list > [email protected] > http://fonosfera.org/mailman/listinfo/development > >
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