centos 下创建console口的配置方法

GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(se{d}^{\prime }s,release.\ast$,g’ /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT=“console”
GRUB_CMDLINE_LINUX=“crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet 8250.nr_uarts=10”
GRUB_DISABLE_RECOVERY=“true”
GRUB_CMDLINE_LINUX_DEFAULT=“console=tty0 console=ttyS0,9600”

然后重新引导一下程序:
grub2-mkconfig -o /boot/grub2/grub.cfg
在UEFI下使用此命令:
grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg

2020年8月20 调试时候把ttyS0 口作为console口 进行调试。左后调试出来了。重点标记一下
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(se{d}^{\prime }s,release.\ast$,g’ /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT=“console”
GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap nomodeset rhgb quiet 8250.nr_uarts=8 biosdevname=0 net.ifnames=0 console=ttyS0,9600n8"
GRUB_DISABLE_RECOVERY=“true”