环境准备
Linux-pxe服务器：192.168.216.20，Centos6.6_X64；网关和dns地址都为192.168.216.2。
tftp、dhcp、nfs服务器：192.168.216.20
虚拟机模拟环境：需提前将CentOS光盘加到光驱。
搭建tftp服务器
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yum install -y tftp tftp-server xinetd
vi /etc/xinetd.d/tftp // 其他默认，将disable = yes替换为disable = no
service xinetd start
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配置dhcpd服务
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yum install -y dhcp
cp /usr/share/doc/dhcp-4.1.1/dhcpd.conf.sample /etc/dhcp/dhcpd.conf
vi /etc/dhcpd.conf
ddns-update-style interim;
ignore client-updates;
subnet 192.168.216.0 netmask 255.255.255.0 {
allow booting;
allow bootp;
allow unknown-clients;
option routers 192.168.216.2;
option subnet-mask 255.255.255.0;
option domain-name-servers 192.168.216.2;
option time-offset -18000; # Eastern Standard Time
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
# option netbios-node-type 2;
range dynamic-bootp 192.168.216.100 192.168.216.254;
default-lease-time 21600;
max-lease-time 43200;
next-server 192.168.216.20;
filename "pxelinux.0";
}
service dhcpd start
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配置支持pxe
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yum install -y syslinux
cp /usr/share/syslinux/pxelinux.0 /tftpboot
mkdir /install
mount /dev/cdrom1 /install #挂载时只读提示mount: block device /dev/sr0 is write-protected, mounting read-only，不影响。
cp /install/isolinux/{initrd.img,vmlinuz.img} /var/lib/tftpboot
mkdir /var/lib/tftpboot/pxelinux.cfg
chmod 644 /var/lib/tftpboot/pxelinux.cfg/default
vim /var/lib/tftpboot/pxelinux.cfg/default // 内容为：
default linux
prompt 1
timeout 30
label linux
kernel vmlinuz
append initrd=initrd.img ks=nfs:192.168.216.20:/ks/ks.cfg
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配置ks.cfg
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mkdir /ks
vi /ks/ks.cfg
#platform=x86, AMD64, or Intel EM64T
# System authorization information
auth --useshadow --enablemd5
# System bootloader configuration
bootloader --location=mbr
# Clear the Master Boot Record
zerombr
# Partition clearing information
clearpart --all --initlabel
# Use graphical install
graphical
# Firewall configuration
firewall --enabled
# Run the Setup Agent on first boot
firstboot --disable
# System keyboard
keyboard us
# System language
lang en_US
# Installation logging level
logging --level=info
# Use NFS installation media
nfs --server=192.168.216.20 --dir=/install
# Network information
network --bootproto=dhcp --device=eth0 --onboot=on
#Root password
rootpw --iscrypted $1$BYSimLw0$I515yLiKzudlwkIskBqQE1
# SELinux configuration
selinux --disabled
# System timezone
timezone Asia/Shanghai
# Install OS instead of upgrade
install
# X Window System configuration information
#xconfig --defaultdesktop=GNOME --depth=32 --resolution=800x600
reboot
text
# Disk partitioning information
part /boot --bytes-per-inode=4096 --fstype="ext3" --size=100
part swap --bytes-per-inode=4096 --fstype="swap" --size=256
part / --bytes-per-inode=4096 --fstype="ext3" --grow --size=1
%packages --ignoremissing
@editors
@graphics
@x-software-development
@development-libs
@development-tools
kernel-devel
e2fsprogs
kernel
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配置NFS
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yum install -y nfs-utils rpcbind
vim /etc/exports
/install * (ro,no_root_squash,sync)
/ks *(ro,no_root_squash,sync)
启动NFS服务：
service nfs restart
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创建一个新的虚拟机
设置网络为nat模式，默认就是使用dhcp方式安装系统的。
安装成功：root密码是：123456
