Configure serial port connection for CENTOS

Configure serial port connection for CENTOS

1. Modify vi/boot/grub. conf (the content is marked in red)

# Grub. conf generated by anaconda

#

# Note that you do not have to rerun grubafter making changes to this file

# NOTICE: You have a/boot partition. Thismeans that

# All kernel and initrd paths are relative to/boot/, eg.

# Root (hd0, 0)

# Kernel/vmlinuz-version ro root =/dev/sda5

# Initrd/initrd-[generic-] version. img

# Boot =/dev/sda

Default = 0

Timeout = 5

Splashimage = (hd0, 0)/grub/splash.xpm.gz

Hiddenmenu

Serial -- unit = 0 -- speed = 115200 -- word = 8 -- parity = no -- stop = 1

Title CentOS (2.6.32-431. el6.x86 _ 64)

Root (hd0, 0)

Kernel/vmlinuz-2.6.32-431.el6.x86_64 roroot = UUID = f0013145-01cc-41ba-b202-0d9b6bc785c7console = tty0 console = ttyS0, 115200rd_NO_LUKS rd_NO_MDcrashkernel = auto LANG = zh_CN.UTF-8 rd_NO_LVM rd_NO_DM

Initrd/initramfs-2.6.32-431.el6.x86_64.img

2. Modify vi/etc/inittab (the content is marked in red)

# Default runlevel. The runlevels used 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:

# Run agetty on COM1/ttyS0 and COM2/ttyS1

S0: 2345: respawn:/sbin/agetty-L-f/etc/issueserial 115200 ttyS0 vt102

3. Modify vi/etc/securetty (marked in red)

Console

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

TtyS0

TtyS1

4. After the configuration is complete, restart.