一键部署pxe环境

系统：Centos6.5

环境：VMware Workstation12

#!/bin/bash

# Please prepare CentOS ISO image first

# root password:123456

# initialization

ip=192.168.126.11

dhcp_start=192.168.126.100

dhcp_end=192.168.126.200

subnet=192.168.126.0

netmask=255.255.255.0

broadcast=192.168.126.255

swap_size=2048

# Mount CentOS ISO

[ -e /dev/cdrom -a -e /dev/cdrom1 ]||{

echo "please insert iso image";exit

}

mkdir -p /pxe/{centos6,centos7,ks}

mount /dev/cdrom  /pxe/centos6 &>/dev/null

mount /dev/cdrom1 /pxe/centos7 &>/dev/null

echo "/dev/cdrom   /pxe/centos6  iso9660  defaults 0 0" >>/etc/fstab

echo "/dev/cdrom1  /pxe/centos7  iso9660  defaults 0 0" >>/etc/fstab

# Install NFS

echo "NFS Installing..."

yum install nfs-utils -y &>/dev/null

echo "/pxe/centos6 *(ro)" >> /etc/exports

echo "/pxe/centos7 *(ro)" >> /etc/exports

echo "/pxe/ks *(ro)" >> /etc/exports

service rpcbind restart &>/dev/null

service nfs restart &>/dev/null

chkconfig rpcbind on

chkconfig nfs on

[ `ps -ef|grep nfsd|wc -l` -gt 1 ]&& echo "NFS is ready!"|| {

 echo "NFS error";exit

}

# Install TFTP

echo "TFTP Installing..."

yum install xinetd tftp-server -y &>/dev/null

sed -i '/disable/s/yes/no/' /etc/xinetd.d/tftp

sed -i '/server_args/c\server_args	= -t -s -v /var/lib/tftpboot' /etc/xinetd.d/tftp

service xinetd restart &>/dev/null

chkconfig xinetd on

[ `ss -anu|grep :69|wc -l` -gt 0 ]&& echo "TFTP is ready!"||{

echo "TFTP error";exit

}

# Prepare Boot File

echo "syslinux Installing..."

yum install syslinux -y &>/dev/null

mkdir -p /var/lib/tftpboot/centos{6..7}

\cp /usr/share/syslinux/{pxelinux.0,menu.c32} /var/lib/tftpboot/

\cp /pxe/centos6/isolinux/{initrd.img,vmlinuz} /var/lib/tftpboot/centos6

\cp /pxe/centos7/isolinux/{initrd.img,vmlinuz} /var/lib/tftpboot/centos7

mkdir -p /var/lib/tftpboot/pxelinux.cfg

cat >/var/lib/tftpboot/pxelinux.cfg/default <<-EOF

default menu.c32

timeout 600

menu title Welcome to CentOS Automatic Install

label local

  menu label Boot from local drive

  localboot 0xffff

label centos6.5

  menu label Install CentOS 6.5 Minimal

  kernel centos6/vmlinuz

  append initrd=centos6/initrd.img ks=nfs:$ip:/pxe/ks/centos6.cfg

label centos7.3

  menu label Install CentOS 7.3 Minimal

  kernel centos7/vmlinuz

  append initrd=centos7/initrd.img inst.ks=nfs:$ip:/pxe/ks/centos7.cfg

EOF

echo "The boot file is ready!"

# Install DHCP

echo "DHCP Installing..."

yum install dhcp -y &>/dev/null

cat >/etc/dhcp/dhcpd.conf <<-EOF

next-server $ip;

filename "/var/lib/tftpboot/pxelinux.0";

allow bootp;

allow booting;

subnet $subnet netmask $netmask {

  range $dhcp_start $dhcp_end;

  option domain-name-servers $ip;

  option routers $ip;

  option broadcast-address $broadcast;

}

EOF

service dhcpd restart &>/dev/null

chkconfig dhcpd on

[ `ss -anu|grep :67|wc -l` -gt 0 ]&& echo "DHCP is ready!"||{

echo "DHCP error";exit

}

# Prepare ks file

# centos6

echo "ks file preparing..."

cat > /pxe/ks/centos6.cfg <<-EOF

firewall --disabled

install

nfs --server=$ip --dir=/pxe/centos6

rootpw --iscrypted \$1\$PWGYEp1D\$UmqHNIm./L8dLSsF4owc30

auth  --useshadow  --passalgo=sha512

text

keyboard us

lang zh_CN

selinux --disabled

skipx

logging --level=info

reboot

timezone  Asia/Shanghai

network  --bootproto=dhcp --device=eth0 --onboot=on

bootloader --append="quiet" --location=mbr

zerombr

clearpart --all

part /boot --asprimary --fstype="ext4" --size=200

part pv.008002 --size=1 --grow

volgroup vg --pesize=4096 pv.008002

logvol swap --fstype=swap --name=swap --vgname=vg --size=$swap_size

logvol / --fstype=ext4 --name=root --vgname=vg --size=1 --grow

%packages --nobase

@Core

%end

%post

sed -i 's/^GSSAPIAuthentication yes/GSSAPIAuthentication no/' /etc/ssh/sshd_config

sed -i '/UseDNS/c\UseDNS no' /etc/ssh/sshd_config

%end

EOF

# centos7

\cp /pxe/ks/{centos6.cfg,centos7.cfg}

sed -i '/^nfs/s/centos6/centos7/' /pxe/ks/centos7.cfg

sed -i 's/ext4/xfs/;s/--size=200/--size=500/' /pxe/ks/centos7.cfg

sed -i '$a\%addon com_redhat_kdump --disable --reserve-mb='auto'\n%end' /pxe/ks/centos7.cfg

echo "ks file is ready!"

echo "Installation is complete!!!"