Juan Orti Alcaine: Capture Raspberry Pi kernel crashes

I’m experiencing kernel panics in a headless Raspberry Pi with Fedora 29 Server and need a way to capture what is happening.

First I tried to enable kdump, but this doesn’t seem possible. If someone has done it, I’d like to hear.

What I’m using now, is enabling netconsole to log all the kernel messages over the network to a rsyslog server. This is the config in the Pi:

/etc/modules-load.d/netconsole.conf:

netconsole

/etc/modprobe.d/netconsole.conf:

options netconsole netconsole=4444@10.0.0.1/eth0,20514@10.0.0.2/00:11:22:33:44:55

From the netconsole documentation:

 netconsole=[+][src-port]@[src-ip]/[],[tgt-port]@/[tgt-macaddr]

   where
        +             if present, enable extended console support
        src-port      source for UDP packets (defaults to 6665)
        src-ip        source IP to use (interface address)
        dev           network interface (eth0)
        tgt-port      port for logging agent (6666)
        tgt-ip        IP address for logging agent
        tgt-macaddr   ethernet MAC address for logging agent (broadcast)

And in the rsyslog server:

/etc/rsyslog.d/pi-remote.conf:

$ModLoad imudp
$RuleSet remote

if $fromhost-ip=='10.0.0.1' then /var/log/remote/pi-netconsole.log
& stop

$InputUDPServerBindRuleset remote
$UDPServerRun 20514

$RuleSet RSYSLOG_DefaultRuleset

/etc/logrotate.d/remote-netconsole:

/var/log/remote/*.log
{
        copytruncate
        rotate 30
        daily
        missingok
        dateext
        notifempty
        delaycompress
        compress
        maxage 31
        postrotate
                /usr/bin/systemctl kill -s HUP rsyslog.service >/dev/null 2>&1 || true
        endscript
}
# firewall-cmd --add-port=20514/udp
# firewall-cmd --add-port=20514/udp --permanent

 
I’ve used this documentation:
https://fedoraproject.org/wiki/Netconsole
https://www.kernel.org/doc/Documentation/networking/netconsole.txt
https://michael.stapelberg.de/posts/2013-09-16-remote_syslog/


Source From: fedoraplanet.org.
Original article title: Juan Orti Alcaine: Capture Raspberry Pi kernel crashes.
This full article can be read at: Juan Orti Alcaine: Capture Raspberry Pi kernel crashes.

Advertisement


Random Article You May Like

Leave a Reply

Your email address will not be published. Required fields are marked *

*
*