Users Guide

按照以下说明编辑 /etc/grub.conf 文件：
1. 找到文件的常规设置部分并键入以下两个新行
：
serial --unit=1 --speed=57600 terminal --timeout=10 serial
2. 在内核行上追加两个选项：
kernel console=ttyS1,57600
3. 如果 /etc/grub.conf 包含 splashimage 指令，应将其注释掉。
以下示例显示了此过程中说明的更改。
# grub.conf generated by anaconda # # Note that you do not have to rerun
grub after making changes # to this file # NOTICE: You do not have a /boot
partition. This means that # all kernel and initrd paths are relative to /,
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= ttyS1,57600 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 initrd /boot/initrd-2.4.9-e.3.img
按照以下原则编辑 /etc/grub.conf 文件：
• 禁用 GRUB 的图形界面并使用基于文本的界面。否则，GRUB 屏幕不会在控制台重定向中显示。要禁
用图形界面，请注释掉以 splashimage 开头的行。
• 要使用多个 GRUB 选项来通过串行连接启动控制台会话，将以下行添加到所有选项：
console=ttyS1,57600
此示例显示 console=ttyS1,57600 仅添加到第一个选项。
配置 Linux 在引导后进行服务器串行控制台重定向
按照以下说明编辑文件 /etc/inittab：
添加新行以在 COM2 串行端口上配置 agetty：
co:2345:respawn:/sbin/agetty -h -L 57600 ttyS1 ansi
下例显示了带有新行的文件。
# # 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 # 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/
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