Users Guide

e.g. # root (hd0,0) # kernel /boot/vmlinuz-version ro root=/dev/sdal #
initrd /boot/initrd-version.img #boot=/dev/sda default=0 timeout=10
#splashimage=(hd0,2)/grub/splash.xpm.gz serial --unit=1 --speed=57600
terminal --timeout=10 serial title Red Hat Linux Advanced Server (2.4.9-e.
3smp) root (hd0,0) kernel /boot/vmlinuz-2.4.9-e.3smp ro root=/dev/sda1
hda=ide-scsi console=ttyS0 console=ttyS1,115200n8r initrd /boot/
initrd-2.4.9-e.3smp.img title Red Hat Linux Advanced Server-up (2.4.9-e.3)
root (hd0,00) kernel /boot/vmlinuz-2.4.9-e.3 ro root=/dev/sda1 s initrd /
boot/initrd-2.4.9-e.3.im
4. 要启用多个 GRUB 选项来通过 RAC 串行连接启动虚拟控制台会话，将以下行添加到所有选项：
console=ttyS1,115200n8r console=tty1
本例显示 console=ttyS1,57600 添加到第一个选项。
允许在引导后登录到虚拟控制台
在文件 /etc/inittab 中，新增一行以在 COM2 串行端口上配置 agetty：
co:2345:respawn:/sbin/agetty -h -L 57600 ttyS1 ansi
以下示例显示带有新增行的示例文件。
#inittab This file describes how the INIT process should set up #the system in
a certain run-level. #Author:Miquel van Smoorenburg #Modified for RHS Linux by
Marc Ewing and Donnie Barnes #Default runlevel. The runlevels used by RHS are:
#0 - halt (Do NOT set initdefault to this) #1 - Single user mode #2 -
Multiuser, without NFS (The same as 3, if you do not have #networking) #3 -
Full multiuser mode #4 - unused #5 - X11 #6 - reboot (Do NOT set initdefault to
this) id:3:initdefault: #System initialization. si::sysinit:/etc/rc.d/
rc.sysinit l0:0:wait:/etc/rc.d/rc 0 l1:1:wait:/etc/rc.d/rc 1 l2:2:wait:/etc/
rc.d/rc 2 l3:3:wait:/etc/rc.d/rc 3 l4:4:wait:/etc/rc.d/rc 4 l5:5:wait:/etc/
rc.d/rc 5 l6:6:wait:/etc/rc.d/rc 6 #Things to run in every runlevel. ud::once:/
sbin/update ud::once:/sbin/update #Trap CTRL-ALT-DELETE ca::ctrlaltdel:/sbin/
shutdown -t3 -r now #When our UPS tells us power has failed, assume we have a
few #minutes of power left. Schedule a shutdown for 2 minutes from now. #This
does, of course, assume you have power installed and your #UPS is connected and
working correctly. pf::powerfail:/sbin/shutdown -f -h +2 "Power Failure; System
Shutting Down" #If power was restored before the shutdown kicked in, cancel it.
pr:12345:powerokwait:/sbin/shutdown -c "Power Restored; Shutdown Cancelled"
#Run gettys in standard runlevels co:2345:respawn:/sbin/agetty -h -L 57600
ttyS1 ansi 1:2345:respawn:/sbin/mingetty tty1 2:2345:respawn:/sbin/mingetty
tty2 3:2345:respawn:/sbin/mingetty tty3 4:2345:respawn:/sbin/mingetty tty4
5:2345:respawn:/sbin/mingetty tty5 6:2345:respawn:/sbin/mingetty tty6 #Run xdm
in runlevel 5 #xdm is now a separate service x:5:respawn:/etc/X11/prefdm -
nodaemon
在文件 /etc/securetty 中，使用 COM2 的串行 tty 名称新增一行：
ttyS1
以下示例显示带有新增行的示例文件。
注: 使用中断键序列 (~B) 在串行控制台上使用 IPMI 工具执行 Linux Magic SysRq 键命令。
vc/1 vc/2 vc/3 vc/4 vc/5 vc/6 vc/7 vc/8 vc/9 vc/10 vc/11 tty1 tty2 tty3 tty4
tty5 tty6 tty7 tty8 tty9 tty10 tty11 ttyS1
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