On Sat, 2017-12-09 at 23:14 +0900, Tetsuo Handa wrote: > Under OOM lockup situation, kernel messages can unlikely be saved to > syslog > files, for writing to files involves memory allocation. Can you set > up > netconsole or serial console explained at > http://events.linuxfoundation.org/sites/events/files/slides/LCJ2014-e > n_0.pdf ? > If neither console is possible, it would become difficult to debug. netconsole works only within local network? destination ip may be from another network? [11415.184163] netpoll: netconsole: local port 6665 [11415.184168] netpoll: netconsole: local IPv4 address 0.0.0.0 [11415.184169] netpoll: netconsole: interface 'enp2s0' [11415.184171] netpoll: netconsole: remote port 6666 [11415.184173] netpoll: netconsole: remote IPv4 address 213.136.82.171 [11415.184174] netpoll: netconsole: remote ethernet address ff:ff:ff:ff:ff:ff [11415.184179] netpoll: netconsole: local IP 192.168.1.85 [11415.184738] console [netcon0] enabled [11415.184741] netconsole: network logging started But on remote host nothing happens when I do SysRq-t Of course I compiled and launched ./udplogger on remote host under tmux. And add udp port 6666 to firewalld rule. # firewall-cmd --permanent --add-port=6666/udp && systemctl restart firewalld -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
