Configuring Linux For Server Serial Console Redirection After Boot - Dell PS-M4110 User Manual

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
When you edit the /etc/grub.conf file, follow these guidelines:
– Disable GRUB's graphical interface and use the text-based interface; otherwise, the GRUB screen is not
displayed in console redirection. To disable the graphical interface, comment out the line starting with
splashimage.
– To start multiple GRUB options to start console sessions through the serial connection, add the following
line to all options:
console=ttyS1,57600
The example shows console=ttyS1,57600 added to only the first option.

Configuring Linux for Server Serial Console Redirection After Boot

Edit the file /etc/inittab, as follows:
Add a new line to configure agetty on the COM2 serial port:
co:2345:respawn:/sbin/agetty -h -L 57600 ttyS1
ansi
The following example shows the file with the new line.
#
# 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
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