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Laurent GUERBY, 11/08/2017 16:56
Netconsole¶
nagios¶
root@nucnagios:~/netconsole# more setup-console.sh #!/bin/bash here=$(dirname $(readlink -f $0)) cleanup(){ kill $(jobs -p) exit 0 } trap cleanup EXIT nc -u -l -p 6600 > $here/stri.dmesg 2>&1 & nc -u -l -p 6601 > $here/g1.dmesg 2>&1 & nc -u -l -p 6602 > $here/g2.dmesg 2>&1 & nc -u -l -p 6603 > $here/g3.dmesg 2>&1 & nc -u -l -p 6604 > $here/g4.dmesg 2>&1 & nc -u -l -p 6605 > $here/g5.dmesg 2>&1 & nc -u -l -p 6606 > $here/g6.dmesg 2>&1 & nc -u -l -p 6607 > $here/n7.dmesg 2>&1 & nc -u -l -p 6608 > $here/g8.dmesg 2>&1 & nc -u -l -p 6609 > $here/g9.dmesg 2>&1 & nc -u -l -p 6610 > $here/g10.dmesg 2>&1 & nc -u -l -p 6611 > $here/g11.dmesg 2>&1 & nc -u -l -p 6612 > $here/g12.dmesg 2>&1 & nc -u -l -p 6613 > $here/g13.dmesg 2>&1 & nc -u -l -p 6614 > $here/g14.dmesg 2>&1 & nc -u -l -p 6615 > $here/g15.dmesg 2>&1 & nc -u -l -p 6616 > $here/g16.dmesg 2>&1 & echo "netconsole listener running" wait root@nucnagios:~/netconsole# nohup ./setup-console.sh >& /dev/null < /dev/null &
g1¶
root@g1:~# more /etc/rc.local declare -A netconsole_cfg netconsole_cfg["g1"]="192.168.128.201:6601" # Setup some helper vars h=$(hostname -s) netconsole_path=/sys/kernel/config/netconsole/nagios netconsole_ip=$(echo ${netconsole_cfg[$h]} | awk -F: '{print $1}') netconsole_port=$(echo ${netconsole_cfg[$h]} | awk -F: '{print $2}') netconsole_int=$(echo ${netconsole_cfg[$h]} | awk -F: '{print $3}') netconsole_int=${netconsole_int:-eth2} # NETCONSOLE interface [ "${netconsole_cfg[$h]}" ] && ip a a $netconsole_ip/24 dev $netconsole_int # Setup netconsole modprobe configfs modprobe netconsole mount | grep -q configfs || mount none -t configfs /sys/kernel/config mkdir -p $netconsole_path if [ "${netconsole_cfg[$h]}" ]; then echo 0 > $netconsole_path/enabled echo $netconsole_int > $netconsole_path/dev_name echo $netconsole_ip > $netconsole_path/local_ip echo $netconsole_port > $netconsole_path/local_port echo "192.168.128.248" > $netconsole_path/remote_ip echo "b8:ae:ed:70:8b:80" > $netconsole_path/remote_mac echo 1 > $netconsole_path/enabled sleep 1 echo m > /proc/sysrq-trigger # test-it fi
gcc67¶
modprobe configfs modprobe netconsole #mount none -t configfs /sys/kernel/config netconsole_path=/sys/kernel/config/netconsole/nagios mkdir -p $netconsole_path echo 0 > $netconsole_path/enabled echo enp10s0 > $netconsole_path/dev_name echo 91.224.148.12 > $netconsole_path/local_ip echo 6615 > $netconsole_path/local_port echo 6615 > $netconsole_path/remote_port echo "89.234.156.171" > $netconsole_path/remote_ip echo "b8:ae:ed:70:8b:80" > $netconsole_path/remote_mac echo 1 > $netconsole_path/enabled sleep 1 echo m > /proc/sysrq-trigger # test-it
gcc68¶
modprobe configfs modprobe netconsole mount none -t configfs /sys/kernel/config netconsole_path=/sys/kernel/config/netconsole/nagios mkdir -p $netconsole_path echo 0 > $netconsole_path/enabled echo enp10s0 > $netconsole_path/dev_name echo 91.224.148.13 > $netconsole_path/local_ip echo 6616 > $netconsole_path/local_port echo 6616 > $netconsole_path/remote_port echo "89.234.156.171" > $netconsole_path/remote_ip echo "b8:ae:ed:70:8b:80" > $netconsole_path/remote_mac echo 1 > $netconsole_path/enabled sleep 1 echo m > /proc/sysrq-trigger # test-it
New¶
echo 0 > /sys/kernel/config/netconsole/nagios/enabled rmdir /sys/kernel/config/netconsole/nagios/ rmmod netconsole #h8 modprobe netconsole netconsole=@192.168.128.53/eth0,6666@192.168.128.248/b8:ae:ed:70:8b:80 #gcc67 modprobe netconsole netconsole=@91.224.148.12/enp10s0,6666@89.234.156.171/b8:ae:ed:70:8b:80 #gcc68 modprobe netconsole netconsole=@91.224.148.13/enp10s0,6666@89.234.156.171/b8:ae:ed:70:8b:80 #gcc68 ipv6 link local modprobe netconsole netconsole=@fe80::7285:c2ff:fe3a:167e/enp10s0,6666@fe80::baae:edff:fe70:8b80/b8:ae:ed:70:8b:80
On nagios:
# if not managed by supervisord see root@nucnagios:/etc/supervisor/conf.d/* root@nucnagios:~/netconsole# nohup python3 pyudplogger.py >& log.txt < /dev/null & root@nucnagios:~/netconsole# nohup python3 pyudplogger6.py >& log6.txt < /dev/null &
TODO early boot le meme format dans grub https://www.kernel.org/doc/Documentation/networking/netconsole.txt