PXE_centos一键安装

vim install_PXE.sh
#!/bin/bash
# 
#********************************************************************
#Author:            Mr.yang
#QQ:                1419946323
#Date:              2021-07-12
#FileName：         auto_install_centos678_PXE.sh
#URL:               www.yhtzjy.com
#Description：      The test script
#Copyright (C):     2021 All rights reserved
#********************************************************************

ReleaseNo=`cat /etc/redhat-release 'sed -rn 's/.* ([[:digit:]]+)\..*/\1/p'`
PXEinstall(){
setenforce 0
systemctl stop firewalld
rpm -q net-tools ''yum -y install net-tools &> /dev/null
ifconfig 'grep eth0
if [ "$?" -ne "0" ];then
    echo "请将网卡更名为eth0;才能继续运行本脚本；更改过程中会强制重启；您是否还要继续执行？"
    read -p " 请按y继续运行: " ipsure
    [ "${ipsure}" == "y" ] && sed -ir '/GRUB_CMDLINE_LINUX=/s/"$/ net.ifnames=0"/p' /etc/default/grub && grub2-mkconfig -o /etc/grub2.cfg &>/dev/null
    read -p "请输入eth0的IP: " ip
    read -p "请输入要设置的子网掩码（prefix）如 24: " prefix
    read -p "请输入要设置的网关： " gateway
    cat >/etc/sysconfig/network-scripts/ifcfg-eth0 <<EOF
DEVICE="eth0"
BOOTPROTO="static"
ONBOOT="yes"
TYPE="Ethernet"
IPADDR=$ip
PREFIX=$prefix
GATEWAY=$gateway
DNS1=114.114.114.114
EOF
    echo "请重启系统；然后重新执行本脚本"
    echo "重启后如果无法联网 请执行service network restart 或者 nmcli con reload; nmcli con up eth0"
    reboot
fi
ipeth0=`ifconfig eth0'sed -rn '/inet\>/s/[^0-9]+([0-9.]+).*/\1/p'`
neteth0=`ifconfig eth0'sed -rn '/inet\>/s/[^0-9]+([0-9.]+).*/\1/p''cut -d. -f1-3`
route=`ip route'grep default'grep eth0'sed -rn 's/[^0-9]+([0-9.]+).*/\1/p'`
route6=`ip route'grep default'sed -rn 's/[^0-9]+([0-9.]+).*/\1/p'`
srinfo6=`lsblk'awk '/sr/{print $1}'`
srinfo=`lsblk'egrep -o 'sr[^ ]*'`
for scan in /sys/class/scsi_host/host*/scan;do echo "- - -" >$scan;done
if [ "$ReleaseNo" -eq "8" ];then            
    rpm -q dhcp-server tftp-server httpd syslinux-nonlinux'' dnf -y install dhcp-server tftp-server httpd syslinux-nonlinux 
cat >/etc/dhcp/dhcpd.conf <<-EOF
option domain-name "example.org";
option domain-name-servers 180.76.76.76,114.114.114.114;
default-lease-time 600;
max-lease-time 7200;
log-facility local7;
subnet ${neteth0}.0 netmask 255.255.255.0 {
  range ${neteth0}.100 ${neteth0}.200;
  option routers ${route};
  next-server ${ipeth0};
  filename "pxelinux.0";
}
EOF
    systemctl enable --now httpd tftp dhcpd
fi 
if [ "$ReleaseNo" -eq "7" ];then            
    rpm -q httpd tftp-server dhcp syslinux''yum -y install httpd tftp-server dhcp syslinux 
cat >/etc/dhcp/dhcpd.conf <<-EOF
option domain-name "example.org";
option domain-name-servers 180.76.76.76,114.114.114.114;
default-lease-time 600;
max-lease-time 7200;
log-facility local7;
subnet ${neteth0}.0 netmask 255.255.255.0 {
  range ${neteth0}.100 ${neteth0}.200;
  option routers ${route};
  next-server ${ipeth0};
  filename "pxelinux.0";
}
EOF
    systemctl enable --now httpd tftp dhcpd
fi 
if [ "$ReleaseNo" -eq "6" ];then            
    rpm -q httpd tftp-server dhcp syslinux''yum -y install httpd tftp-server dhcp syslinux 
    service httpd start
    sed -i '/disable/s/yes/no/' /etc/xinetd.d/tftp
    service xinetd restart
cat >/etc/dhcp/dhcpd.conf <<EOF
option domain-name "example.org";
option domain-name-servers 180.76.76.76,114.114.114.114;
default-lease-time 600;
max-lease-time 7200;
log-facility local7;
subnet ${neteth0}.0 netmask 255.255.255.0 {
  range ${neteth0}.100 ${neteth0}.200;
  option routers ${route6};
  next-server ${ipeth0};
  filename "pxelinux.0";
}
EOF
    service dhcpd start
fi 
    mkdir /var/www/html/centos/{6,7,8}/isos/x86_64/ -pv &>/dev/null
if [ "$ReleaseNo" -eq "7" -o "$ReleaseNo" -eq "8" ];then
    srinfo6=${srinfo}
fi
    for sr in ${srinfo6};do
        mkdir /mnt/${sr} -p &>/dev/null
        mount /dev/${sr} /mnt/${sr} 
        if [ -d /mnt/${sr}/AppStream ];then
            mount /dev/${sr} /var/www/html/centos/8/isos/x86_64/ &>/dev/null
            mkdir  /var/www/html/ksdir -p &>/dev/null
            mkdir /var/lib/tftpboot/8 -p &> /dev/null
            \cp -a /mnt/${sr}/isolinux/{vmlinuz,initrd.img} /var/lib/tftpboot/8/
            \cp /mnt/${sr}/isolinux/{ldlinux.c32,libcom32.c32,libutil.c32} /var/lib/tftpboot/
cat >/var/www/html/ksdir/ks8.cfg <<-EOF
#version=RHEL8
ignoredisk --only-use=sda
zerombr
text
reboot
# Partition clearing information
clearpart --all --initlabel
selinux --disabled
firewall --disabled

# Use graphical install
url --url=http://${ipeth0}/centos/8/isos/x86_64/
#repo --name="AppStream" --baseurl=file:///run/install/repo/AppStream
# Use CDROM installation media
#cdrom
# Keyboard layouts
keyboard --vckeymap=us --xlayouts='us'
# System language
lang en_US.UTF-8

# Network information
network  --bootproto=dhcp --device=ens160 --onboot=yes --ipv6=auto --no-activate
network  --hostname=localhost.localdomain
# Root password
rootpw --iscrypted \$1\$jb2QI2x8\$wWAOeOxXerdfYXyVwV0890
# Run the Setup Agent on first boot
firstboot --enable
# Do not configure the X Window System
skipx
# System services
#services --disabled="chronyd"
# System timezone
timezone Asia/Shanghai --isUtc --nontp
# Disk partitioning information
part / --fstype="xfs" --ondisk=sda --size=102400
part /data --fstype="xfs" --ondisk=sda --size=51200
part swap --fstype="swap" --ondisk=sda --size=2048
part /boot --fstype="ext4" --ondisk=sda --size=1024
%addon com_redhat_kdump --disable --reserve-mb='auto'
%end

%packages
@^minimal-environment
kexec-tools
%end

%anaconda
pwpolicy root --minlen=6 --minquality=1 --notstrict --nochanges --notempty
pwpolicy user --minlen=6 --minquality=1 --notstrict --nochanges --emptyok
pwpolicy luks --minlen=6 --minquality=1 --notstrict --nochanges --notempty
%end
EOF
        fi
        if [ -e /mnt/${sr}/RPM-GPG-KEY-CentOS-6 ];then
            mount /dev/${sr} /var/www/html/centos/6/isos/x86_64/ &>/dev/null
            mkdir  /var/www/html/ksdir -p &>/dev/null
            mkdir /var/lib/tftpboot/6 -p &>/dev/null
            \cp -a /mnt/${sr}/isolinux/{vmlinuz,initrd.img} /var/lib/tftpboot/6/ &>/dev/null
cat >/var/www/html/ksdir/ks6.cfg <<EOF
#ckstart file automatically generated by anaconda.
#version=DEVEL
install
url --url=http://${ipeth0}/centos/6/isos/x86_64/
lang en_US.UTF-8
keyboard us
network --onboot yes --device eth0 --bootproto dhcp --noipv6
rootpw  --iscrypted \$1\$jb2QI2x8\$wWAOeOxXerdfYXyVwV0890
firewall --disabled
authconfig --enableshadow --passalgo=sha512
selinux --disabled
timezone Asia/Shanghai
bootloader --location=mbr --driveorder=sda --append="crashkernel=auto rhgb quiet"
# The following is the partition information you requested
# Note that any partitions you deleted are not expressed
# here so unless you clea:r all partitions first, this is
# not guaranteed to work
clearpart --all
zerombr
reboot
text
part /boot --fstype=ext4 --size=1024
part / --fstype=ext4 --size=100000
part /data --fstype=ext4 --size=50000
part swap --size=2048

%packages
@core
autofs
%end
EOF
        fi
        if [ -e /mnt/${sr}/RPM-GPG-KEY-CentOS-7 ];then
                mount /dev/${sr} /var/www/html/centos/7/isos/x86_64/ &>/dev/null
            mkdir  /var/www/html/ksdir -p &>/dev/null
            mkdir /var/lib/tftpboot/7 -p &>/dev/null
            \cp -a /mnt/${sr}/isolinux/{vmlinuz,initrd.img} /var/lib/tftpboot/7/
cat >/var/www/html/ksdir/ks7.cfg <<EOF
#platform=x86, AMD64, or Intel EM64T
#version=DEVEL
# Install OS instead of upgrade
install
# X Window System configuration information
xconfig  --startxonboot
# Keyboard layouts
# old format: keyboard us
# new format:
keyboard --vckeymap=us --xlayouts='us'
# Root password
rootpw --iscrypted \$1\$jb2QI2x8\$wWAOeOxXerdfYXyVwV0890
# Use network installation
url --url="http://${ipeth0}/centos/7/isos/x86_64"
# System language
lang en_US
# System authorization information
auth  --useshadow  --passalgo=sha512
# Use text mode install
text
# Run the Setup Agent on first boot
firstboot --enable
# SELinux configuration
selinux --disabled
# Do not configure the X Window System
skipx

# System services
#services --disabled="chronyd"
ignoredisk --only-use=sda
# Firewall configuration
firewall --disabled
# Network information
network  --bootproto=dhcp --device=ens33
# Reboot after installation
reboot
# System timezone
timezone Asia/Shanghai --nontp
# System bootloader configuration
bootloader --append="crashkernel=auto" --location=mbr --boot-drive=sda
# Clear the Master Boot Record
zerombr
# Partition clearing information
clearpart --all --initlabel
# Disk partitioning information
part swap --fstype="swap" --ondisk=sda --size=2048
part / --fstype="xfs" --ondisk=sda --size=100000
part /boot --fstype="xfs" --ondisk=sda --size=1024
part /data --fstype="xfs" --ondisk=sda --size=50000

%packages
@core
%end

EOF
        fi
    done
\cp /usr/share/syslinux/{pxelinux.0,menu.c32} /var/lib/tftpboot/
mkdir /var/lib/tftpboot/pxelinux.cfg/ -p
cat >/var/lib/tftpboot/pxelinux.cfg/default <<EOF
default menu.c32
timeout 600

menu title CentOS Linux 

label linux8
  menu label Auto Install CentOS Linux ^8.0 Mini
  kernel 8/vmlinuz
  append initrd=8/initrd.img ks=http://${ipeth0}/ksdir/ks8.cfg

label linux7
  menu label Auto Install CentOS Linux ^7 Mini
  kernel 7/vmlinuz
  append initrd=7/initrd.img ks=http://${ipeth0}/ksdir/ks7.cfg

label linux6
  menu label Auto Install CentOS Linux ^6 Mini
  kernel 6/vmlinuz
  append initrd=6/initrd.img ks=http://${ipeth0}/ksdir/ks6.cfg

label local
  menu default 
  menu label Boot from ^local drive
  localboot 0xffff
EOF
}

echo "**********************************************************************************************"
echo "***********************************请确保在nat网卡模式下运行***********************************"
echo "**********************************************************************************************"
echo "1..这是一个pxe 自动化安装的脚本；兼容centos6、7、8系统，需要将网卡同一设置为eth0;会自动更改网卡eth0"
echo "2..需要你至少挂载一个光盘；支持cenos6、7、8的光盘"
echo "3..新建虚拟机建议20G 2G内存以上 不然容易报错；"
echo "4..如果运行中有错误请与我联系！谢谢"
echo "5..如果网卡更改后重启了，务必确认是否能ping百度或查看是否有默认网关"
echo "6..如果执行本脚本后发现没有挂载光盘，请执行 yum remove dhcp'dhcp-server httpd tftp-server 清理环境"
echo "7..运行脚本需要在当前shell运行，不要开启子shell，否则无法使用自动更改网卡名功能"
echo "**************************************************************************************"
echo "**************************************************************************************"
echo "虚拟机默认密码为123"
j=5
for i in `seq 5`;do
        echo "${j}s后自动开始运行"
        let j--
        sleep 1
done
PXEinstall