dnsmasq部署pxe服務器腳本
原文 https://www.iyunv.com/thread-404666-1-1.html
收藏 2017-9-18 10:15:18
目標：dnsmasq部署pxe服務器腳本
網絡環境:
kvm+vsftpd服務器:192.168.10.7
dnsmasq簡介
? Dnsmasq 提供 DNS 緩存和 DHCP 服務功能。作為域名解析服務器(DNS)，dnsmasq可以通過緩存 DNS 請求來提高對訪問過的網址的連接速度。作為DHCP 服務器，dnsmasq 可以用于為局域網電腦分配內網ip地址和提供路由。
? ? ? ? ?
? DNS和DHCP兩個功能可以同時或分別單獨實現。dnsmasq輕量且易配置，適用于個人用戶或少于50臺主機的網絡。由于dnsmasq可以管理tftp-server服務。因此可以用來搭建PXE服務器。
#臨時測試：
systemctl? stop? firewalld
systemctl? stop? libvirtd
setenforce? 0
#準備本地yum源
mkdir? -pv? /dvd
mount? /dev/cdrom? /dvd
chmod? +x? /etc/rc.d/rc.local
grep? dvd? /etc/rc.d/rc.local || echo? 'mount? /dev/cdrom? /dvd'? > /etc/rc.d/rc.local
source? /etc/rc.d/rc.local
cd? /etc/yum.repos.d
mkdir? -pv? bak/
mv? -v? *.repo? bak/
cat? > dvd.repo <<EOF
[centos73]
name=centos linux 7.3 local
baseurl=file:///dvd
enabled=1
gpgcheck=0
EOF
yum? clean? all
yum? repolist
yum install? -y? vsftpd
mkdir? -pv? /var/ftp/ks/
yum install? -y dnsmasq? curl? tftp-server? xinetd? syslinux? mlocate
mkdir? -v? /var/lib/tftpboot/pxelinux.cfg? /var/lib/tftpboot/centos7/? /var/ftp/dvd/
systemctl? restart? vsftpd
mount? /dev/cdrom? /var/ftp/dvd
updatedb
locate? pxelinux.0
cp? -v? /usr/share/syslinux/pxelinux.0? /var/lib/tftpboot/
cp? -v? /usr/share/syslinux/menu.c32? ? /var/lib/tftpboot/
cp? -v? /dvd/isolinux/*? /var/lib/tftpboot/centos7/
touch? /var/lib/tftpboot/pxelinux.cfg/default
#創建pxe啟動菜單default文件
cat? > /var/lib/tftpboot/pxelinux.cfg/default <<EOF
default menu.c32
prompt 0
timeout 300
ONTIMEOUT local
menu title ##########? ? ? PXE Boot Menu ##########
label 1
menu label ^1)InstallCentOS7? x64 withLocalRepo
kernel? ? ? centos7/vmlinuz
append initrd=centos7/initrd.img? method=ftp://192.168.10.7/dvd? devfs=nomount
#ks=ftp://192.168.10.7/ks/7text.ks
label 2
menu label ^2)InstallCentOS7 x64 with http://mirror.centos.org Repo
kernel? ? ? centos7/vmlinuz
append initrd=centos7/initrd.img? method=http://mirror.centos.org/centos/7/os/x86_64/? devfs=nomount? ip=dhcp
label 3
menu label ^3)InstallCentOS7 x64 withLocalRepousing VNC
kernel? ? ? centos7/vmlinuz
append initrd=centos7/initrd.img? method=ftp://192.168.10.7/pub devfs=nomount inst.vnc? inst.vncpassword=password
label 4
menu label ^4)Bootfromlocal? ? ? drive
EOF
cat? /var/lib/tftpboot/pxelinux.cfg/default
測試dnsmasq手動啟動(已測OK)：
netstat? -atunlp|grep? dnsmasq
systemctl? stop? libvirtd
systemctl? stop? dnsmasq
pkill? -9? dnsmasq
dnsmasq? --interface=ens33? --dhcp-range=192.168.10.100,192.168.10.150? --dhcp-boot=pxelinux.0? --enable-tftp? --tftp-root=/var/lib/tftpboot/
dnsmasq? -i? ens33? -F 192.168.10.100,192.168.10.150? -M? pxelinux.0? --enable-tftp? --tftp-root=/var/lib/tftpboot/
#以上的臨時測試完畢(已測OK)
-----------------------------------------------------------------------
#正式編寫dnsmasq自動部署pxe服務器的腳本
vi? dnsmasq.sh? 腳本代碼如下
#!/bin/bash
setenforce? 0
getenforce
sed? -i? ? '/^SELINUX=/c\SELINUX=disable'? /etc/selinux/config
grep? ^SELINUX? ? /etc/selinux/config
systemctl? stop? firewalld
systemctl? disable? firewalld
systemctl? stop? libvirtd
systemctl? disable? libvirtd
read? -p? ? 'selinux和firewalld已關閉,按回車鍵繼續配置本地yum源...'
#準備本地yum源
mkdir? -pv? /dvd
mount? /dev/cdrom? /dvd
chmod? +x? /etc/rc.d/rc.local
grep? dvd? /etc/rc.d/rc.local || echo? 'mount? /dev/cdrom? /dvd'? > /etc/rc.d/rc.local
source? /etc/rc.d/rc.local
cd? /etc/yum.repos.d
mkdir? -pv? bak/
mv? -v? *.repo? bak/
cat? > dvd.repo <<EOF
[centos73]
name=centos linux 7.3 local
baseurl=file:///dvd
enabled=1
gpgcheck=0
EOF
yum? clean? all
yum? repolist
mkdir? -pv? /var/ftp/ks/
yum install? -y dnsmasq? vsftpd? curl? tftp-server? xinetd
cp? -v? /etc/dnsmasq.conf /etc/dnsmasq.conf.bak
grep -Ev '^#|^$' /etc/dnsmasq.conf
cat? >/etc/dnsmasq.d/dhcp.conf <<EOF
#接口設置，在94行
interface=ens33,lo
#監聽IP地址,在99行
#listen-address=192.168.10.7
#綁定接口,在112行
#bind-interfaces
#域名,#在132行
domain=sky.com
# DHCP range-leases,dhcp租約信息,在145行
dhcp-range= ens33,192.168.10.100,192.168.10.200,255.255.255.0,1h
#ip和mac地址綁定
#dhcp-host=aa:bb:cc:dd:ee:ff,192.168.111.50
# PXE啟動文件和tftp服務器ip地址,在418行
dhcp-boot=pxelinux.0,pxeserver,192.168.10.7? ?
# Gateway網關,在312行
dhcp-option=3,192.168.10.1
# DNS服務器IP地址
dhcp-option=6,114.114.114.114,8.8.8.8
server=8.8.4.4
# Broadcast Address廣播地址
dhcp-option=28,192.168.10.255
# NTP Server網絡時間服務器IP地址,
dhcp-option=42,0.0.0.0
#pxe啟動時的命令提示,在448行
pxe-prompt="Press F8? for menu.", 5
#pxe服務,在458行
pxe-service=x86PC,"Install CentOS 7 from network server 192.168.10.7", pxelinux
#啟用tftp服務,在473行
enable-tftp
#tftp文件共享的根目錄，在476行
tftp-root=/var/lib/tftpboot
EOF
grep -Ev '^#|^$' /etc/dnsmasq.d/dhcp.conf
yum install? -y syslinux? mlocate
yum install? -y? tftp-server? xinetd
ls /usr/share/syslinux
updatedb
locate? pxelinux.0
cp? -v? /usr/share/syslinux/pxelinux.0? /var/lib/tftpboot/
mkdir? ? ? /var/lib/tftpboot/pxelinux.cfg
touch? ? ? /var/lib/tftpboot/pxelinux.cfg/default
cat? > /var/lib/tftpboot/pxelinux.cfg/default <<EOF
default menu.c32
prompt 0
timeout 15
ONTIMEOUT local
menu title ##########? ? ? PXE Boot Menu ##########
label 1
menu label ^1)InstallCentOS7? x64 withLocalRepo
menu? default
kernel? ? ? centos7/vmlinuz
append initrd=centos7/initrd.img? method=ftp://192.168.10.7/dvd? devfs=nomount
#ks=ftp://192.168.10.7/ks/7text.ks
label 2
menu label ^2)InstallCentOS7 x64 with http://mirror.centos.org Repo
kernel? ? ? centos7/vmlinuz
append initrd=centos7/initrd.img? method=http://mirror.centos.org/centos/7/os/x86_64/? devfs=nomount? ip=dhcp
label 3
menu label ^3)InstallCentOS7 x64 withLocalRepousing VNC
kernel? ? ? centos7/vmlinuz
append initrd=centos7/initrd.img? method=ftp://192.168.10.7/dvd? devfs=nomount inst.vnc? inst.vncpassword=password
label 4
menu label ^4)Bootfromlocal? ? ? drive
EOF
cat? /var/lib/tftpboot/pxelinux.cfg/default
mkdir? -v? /var/lib/tftpboot/centos7/
cp? -v? /dvd/isolinux/*? /var/lib/tftpboot/centos7/
pkill? -9? dnsmasq
systemctl restart dnsmasq
systemctl restart vsftpd
systemctl status dnsmasq
systemctl status vsftpd
systemctl enable dnsmasq
systemctl enable vsftpd
netstat? -atunlp|grep? dnsmasq
#腳本編寫完畢
