I have very few information in this /var/log/boot.log file, much less than in the dmesg output.
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dmesg and /var/log/messages loglevel configuration
I dont' know if I am getting it right, but I have understood that the dmesg kernel messages are stored in /var/log/messages by the help of syslog, and that syslog was adding a timestamp before each message, is that right?
In that case, why are not all messages of dmesg stored in /var/log/messages and would there be a loglevel we could change so that it woudl log all messages from dmesg?
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Answers
The output of dmesg seems to contain only the boot up messages. I had a lot of "TCP: Treason uncloaked!" messages when I typed 'dmesg'. I have deleted them with 'dmesg -c', and yet I would like to know where they have been stored. I thought it was in /var/log/messages, but yet they are not there nor in any suggested file above. Isn't this related to a loglevel configuration?
if you want to write the current kernel buffer, you will need to configure syslog accordingly, this differs strongly between syslogd and syslog-ng:
syslog-ng
------------
you need to specify a filter:
filter f_kernel { level(warn) and facility(kern) and not filter(f_iptables)
or level(err) and not facility(authpriv); };
destination log file:
destination custom_log { file("/var/log/kernel_log"
and finally set logging:
log { source(src); filter(f_kernel); destination(custom_log); };
in syslogd
--------------
kern.* /var/log/kernel_log
here are some links:
http://www.softpanorama.or
http://linux.cudeso.be/lin
Hello, Jozk0.
I am using syslogd. The following line in /etc/syslog.conf is probably what I need:
kern.* /var/log/kernel_log
This seems to log almost everything, so I must wait that the event I am looking for comes out again and see if it is there. But as it seems to log all kernel messages, and that dmesg shows all kernel messages, I think that this is the solution to my problem!
Thanks a lot,
Daniel
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by: Jozk0Posted on 2007-10-27 at 03:31:12ID: 20161028
they are stored under:
/var/log/boot.msg
this is on opensuse.