PXE+TFTP+NGINX+Kickstart自动安装脚本
PXE+TFTP+NGINX+Kickstart安装并测试完成，并用脚本实现自动安装PXE环境，脚本介绍如下：脚本功能： 自动安装配置PXE+TFTP+NGINX+Kickstart环境
运行前提： 将CentOS DVD文件准备好，默认是从光驱挂载并复制
脚本变量： 根据实际情况修改如下变量
HTML_DIR： nginx默认的html目录
NAME_SERVER： dhcpd.conf的domain-name-servers的值
SUBNET： dhcpd.conf的subnet的值
NETMASK：dhcpd.conf的netmask的值
RANG_START： dhcpd.conf的IP地址池开始地址
RANG_END：dhcpd.conf的IP地址池结束地址
NEXT_SERVER： dhcpd.conf的next_server的值
TFTPBOOT_DIR： tftp默认目录
PXELINUX_DIR： pxelinux.cfg目录
BOOT_SIZE： /boot分区大小
SWAP_SIZE： swap大小
ROOT_SIZE：/分区大小， 其余空间为/opt分区
使用注意： PXE环境和生产环境要隔离，并且限制主机的访问，防止有服务器默认从网卡启动，重启后就直接重新安装系统
脚本功能演示：
演示时为了节省时间，没有将iso挂载到光驱，所以找不到iso下面的文件
运行完脚本后，环境就搭建完成，将服务器从PXE启动：
脚本代码：
[*]#! /bin/bash
[*]#
[*]# FILE: pxe_kickstart_install.sh
[*]#
[*]# USAGE: ./pxe_kickstart_install.sh
[*]#
[*]# DESCRIPTION: quickly install pxe+tftp+nginx+kickstart, auto install centos 5
[*]#
[*]# AUTHOR: http://waydee.blog.51cto.com/#
[*]# CREATED: 2012-4-24
[*]# VERSION: 1.0
[*]
[*]
[*]
[*]#################### VARIABLES ####################
[*]
[*]ISO_MNT="/mnt/iso" #ISO_MNT is CentOS DVD mount dir
[*]G_LEFT="\e[0;32m\033[1m" #G_LEFT and G_RIGHT to echo green strings
[*]G_RIGHT="\e[m" #G_LEFT and G_RIGHT to echo green strings
[*]R_LEFT="\e[0;31m\033[1m" #R_LEFTand R_RIGHTto echo redstrings
[*]R_RIGHT="\e[m" #R_LEFTand R_RIGHTto echo redstrings
[*]HTML_DIR="/usr/share/nginx/html" #HTML_DIR is nginx / dir,and copy centos dvd to this dir
[*]NAME_SERVER="192.168.2.101" #NAME_SERVER is fordhcpd.conf domain-name-servers
[*]SUBNET="192.168.2.0" #SUBNET is fordhcpd.conf subnet
[*]NETMASK="255.255.255.0" #NETMASK is for dhcpd.confnetmask
[*]RANG_START="192.168.2.220" #RANG_START is for dhcpd.confrange start
[*]RANG_END="192.168.2.225" #RANG_END isfor dhcpd.confrang end
[*]NEXT_SERVER="192.168.2.101" #NEXT_SERVER is for dhcpd.confnext_server
[*]TFTPBOOT_DIR="/var/lib/tftpboot" #tftp boot dir ,default is /var/lib/tftpboot
[*]PXELINUX_DIR="${TFTPBOOT_DIR}/pxelinux.cfg" #pxelinux.cfg dir
[*]BOOT_SIZE="100" #set /boot size
[*]SWAP_SIZE="4096" #set swap size
[*]ROOT_SIZE="40960" #set / size , the rest set to /opt
[*]
[*]
[*]#################### FUNCTIONS ####################
[*]
[*]#check_mnt_dir use to check if ISO_MNT dir exits
[*]check_mnt_dir()
[*]{
[*] if [ -e ${ISO_MNT} ]
[*] then
[*] echo -e "INFO: ${ISO_MNT} dir has ${G_LEFT}exits${G_RIGHT}."
[*] else
[*] mkdir -p ${ISO_MNT}
[*] echo -e "INFO: Create dir ${ISO_MNT} ${G_LEFT}done${G_RIGHT}."
[*] fi
[*]}
[*]
[*]
[*]
[*]
[*]####################MAIN####################
[*]
[*]#install EPEL
[*]if [ ! -e /etc/yum.repos.d/epel.repo ]
[*]then
[*] rpm -ivh http://dl.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm 1>/dev/null
[*] echo -e "Install EPEL source ${G_LEFT}done${G_RIGHT}."
[*]fi
[*]
[*]#install tftp-server system-config-kickstart dhcp syslinux nginx
[*]yum -y install tftp-server system-config-kickstart dhcp syslinux nginx 1>/dev/null
[*]echo -e "INFO: Install RPMS ${G_LEFT}done${G_RIGHT}."
[*]
[*]#create mnt dir
[*]check_mnt_dir
[*]
[*]#mount DVD image to ISO_MNT
[*]mount -t iso9660 /dev/cdrom${ISO_MNT} 1>/dev/null
[*]echo -e "INFO: Mount cdrom to ${ISO_MNT} ${G_LEFT}done${G_RIGHT}."
[*]
[*]#copy file to html dir
[*]echo -e "INFO: Start to copy CentOS image, this may take severl minitus ..."
[*]cp -a ${ISO_MNT}/* ${HTML_DIR} 1>/dev/null
[*]echo -e "INFO: Copy Centos DVD ${G_LEFT}done${G_RIGHT}."
[*]
[*]#config dhcp server
[*]cat>/etc/dhcp/dhcpd.conf/dev/null
[*]DHCP_STATUS=$?
[*]if [[ ${DHCP_STATUS} == 1]]
[*]then
[*] echo -e "ERROR: DHCPD start ${R_LEFT}Failed${R_RIGHT}."
[*] exit 1
[*]else
[*] echo -e "INFO: DHCPD start ${G_LEFT}OK${G_RIGHT}."
[*]fi
[*]
[*]#turn on tftp
[*]sed -i's/disable.*$/disable =no/'/etc/xinetd.d/tftp
[*]echo -e "INFO: TFTP turn on ${G_LEFT}OK${G_RIGHT}."
[*]
[*]#restart xinetd service
[*]servicexinetd restart 1>/dev/null
[*]echo -e "INFO: Xinetd restart ${G_LEFT}OK${G_RIGHT}.."
[*]
[*]#create pxelinux.cfg dir
[*]if [ -e ${PXELINUX_DIR} ]
[*]then
[*] echo -e "INFO: ${PXELINUX_DIR} dir has ${G_LEFT}exits${G_RIGHT}."
[*]else
[*] mkdir -p ${PXELINUX_DIR}
[*] echo -e "INFO: Create dir ${PXELINUX_DIR} ${G_LEFT}done${G_RIGHT}."
[*]fi
[*]
[*]#copy initrd.img vmlinuz pxelinux.0
[*]cp -a ${ISO_MNT}/images/pxeboot/initrd.img${TFTPBOOT_DIR}
[*]echo -e "INFO: Copy initrd.img to ${TFTPBOOT_DIR} ${G_LEFT}done${G_RIGHT}."
[*]
[*]cp -a ${ISO_MNT}/images/pxeboot/vmlinuz${TFTPBOOT_DIR}
[*]echo -e "INFO: Copy vmlinuzto ${TFTPBOOT_DIR} ${G_LEFT}done${G_RIGHT}."
[*]
[*]cp -a /usr/share/syslinux/pxelinux.0${TFTPBOOT_DIR}
[*]echo -e "INFO: Copy pxelinux.0 to ${TFTPBOOT_DIR} ${G_LEFT}done${G_RIGHT}."
[*]
[*]
[*]#config pxelinux.cfg filedefault
[*]cat>${PXELINUX_DIR}/default/dev/null
[*]NGINX_STATUS=$?
[*]if [[ ${NGINX_STATUS} == 1]]
[*]then
[*] echo -e "ERROR: nginx start ${R_LEFT}Failed${R_RIGHT}."
[*] exit 1
[*]else
[*] echo -e "INFO: nginx start ${G_LEFT}OK${G_RIGHT}."
[*]fi
[*]
[*]#pxe_kickstart_install done
[*]echo -e "INFO: PXE+TFTP+NGINX+Kickstart has been installed${G_LEFT}SUCCESS${G_RIGHT}."
Kickstart创建LVM命令
[*]# Disk partitioning information
[*]
[*] part /boot--fstype="ext3" --size=100
[*]
[*] part pv.01 --size=1 --grow
[*]
[*] volgroup vg_root pv.01
[*]
[*] logvol / --vgname=vg_root --size=30720 --name=lv_root
[*]
[*] logvol swap --vgname=vg_root --size=32768 --name=lv_swap
[*]
[*] logvol /opt --vgname=vg_root --size=1 --grow --name=lv_opt
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