> David Mathog wrote: > Will a logger > message for "kern" test it, or is there some other way to force a > printk? I'm afraid the logger method might look like it is working, but > just go through the usual syslog channels instead of netconsole.
Too optimistic. With netconsole (supposedly) running on the local node logger -p kern.err "test from me" only shows up in the log file on that node. No chance of confusion ;-). There is no explicit network logging of kern.err in /etc/syslog.conf, since I figured syslog is never going to be able to actually log anything after a kernel error. dmesg shows that netconsole started and thinks it is working: netconsole: local port 6666 netconsole: local IP 192.168.1.20 netconsole: interface eth0 netconsole: remote port 514 netconsole: remote IP 192.168.1.220 netconsole: remote ethernet address 00:30:48:59:f8:ff console [netcon0] enabled netconsole: network logging started However, absolutely nothing comes over netconsole when a node reboots. Searched a lot and finally found out how to test netconsole: [r...@monkey20 rc6.d]# echo 'p' > /proc/sysrq-trigger [r...@monkey20 rc6.d]# echo 't' > /proc/sysrq-trigger [r...@monkey20 rc6.d]# echo 'm' > /proc/sysrq-trigger and it generated these on the syslogd machine Jan 26 10:21:12 monkey20.cluster SysRq : Jan 26 10:21:12 monkey20.cluster Show Regs Jan 26 10:21:35 monkey20.cluster SysRq : Jan 26 10:21:35 monkey20.cluster Show State Jan 26 10:21:52 monkey20.cluster SysRq : Jan 26 10:21:52 monkey20.cluster Show Memory Notice the contentless messages, which were the same as on the video console. This is a log level issue, change it with dmesg or [r...@monkey20 rc6.d]# echo '9' > /proc/sysrq-trigger [r...@monkey20 rc6.d]# echo 'm' > /proc/sysrq-trigger and then a pile of memory information shows up on both the syslog side and the video console. The default log level on these machines is 3. If the kernel panics with it set to that, will the messages that result be "contentless", like the ones above? Thanks, David Mathog mat...@caltech.edu Manager, Sequence Analysis Facility, Biology Division, Caltech _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
