http://smcijohnny.blogspot.com/2015/06/linuxsolserial-over-lan.html

https://www.hiroom2.com/2016/06/07/centos-7-grub2-and-linux-with-serial-console

https://kernelmanic.com/2015/10/14/enable-serial-console-on-centosrhel-7

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/System_Administrators_Guide/sec-GRUB_2_over_a_Serial_Console.html

https://wiki.archlinux.org/index.php/working_with_the_serial_console

https://www.certdepot.net/rhel7-get-started-grub2

http://strugglers.net/~andy/blog/2015/12/11/installing-debian-by-pxe-using-supermicro-ipmi-serial-over-lan/

bios设置

开启COM1

开启SOL

/etc/default/grub (centos7)

GRUB_TIMEOUT=5

GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"

GRUB_DEFAULT=saved

GRUB_DISABLE_SUBMENU=true

GRUB_CMDLINE_LINUX="crashkernel=auto rhgb quiet console=ttyS1,115200"

GRUB_DISABLE_RECOVERY="true"

GRUB_TERMINAL="serial"

GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"

unit: 0 COM1, 1 COM2

ttyS0: COM1

ttyS1: COM2

服务器由于COM1物理占用，连接需要用ttyS1

grub2-mkconfig -o /boot/grub2/grub.cfg

grub的sol的相关教程结束。