dnsmasq部署pxe服务器脚本
原文 https://www.iyunv.com/thread-404666-1-1.html
收藏 2017-9-18 10:15:18
目标：dnsmasq部署pxe服务器脚本
网络环境:
kvm+vsftpd服务器:192.168.10.7
dnsmasq简介
Dnsmasq 提供 DNS 缓存和 DHCP 服务功能。作为域名解析服务器(DNS)，dnsmasq可以通过缓存 DNS 请求来提高对访问过的网址的连接速度。作为DHCP 服务器，dnsmasq 可以用于为局域网电脑分配内网ip地址和提供路由。
DNS和DHCP两个功能可以同时或分别单独实现。dnsmasq轻量且易配置，适用于个人用户或少于50台主机的网络。由于dnsmasq可以管理tftp-server服务。因此可以用来搭建PXE服务器。
#临时测试：
systemctl stop firewalld
systemctl stop libvirtd
setenforce 0
#准备本地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 < [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 #创建pxe启动菜单default文件 cat > /var/lib/tftpboot/pxelinux.cfg/default < 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 测试dnsmasq手动启动(已测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/ #以上的临时测试完毕(已测OK) ----------------------------------------------------------------------- #正式编写dnsmasq自动部署pxe服务器的脚本 vi dnsmasq.sh 脚本代码如下 #!/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已关闭,按回车键继续配置本地yum源...' #准备本地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 < [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 '^#|^$' /etc/dnsmasq.conf cat >/etc/dnsmasq.d/dhcp.conf < #接口设置，在94行 interface=ens33,lo #监听IP地址,在99行 #listen-address=192.168.10.7 #绑定接口,在112行 #bind-interfaces #域名,#在132行 domain=sky.com # DHCP range-leases,dhcp租约信息,在145行 dhcp-range= ens33,192.168.10.100,192.168.10.200,255.255.255.0,1h #ip和mac地址绑定 #dhcp-host=aa:bb:cc:dd:ee:ff,192.168.111.50 # PXE启动文件和tftp服务器ip地址,在418行 dhcp-boot=pxelinux.0,pxeserver,192.168.10.7 # Gateway网关,在312行 dhcp-option=3,192.168.10.1 # DNS服务器IP地址 dhcp-option=6,114.114.114.114,8.8.8.8 server=8.8.4.4 # Broadcast Address广播地址 dhcp-option=28,192.168.10.255 # NTP Server网络时间服务器IP地址, dhcp-option=42,0.0.0.0 #pxe启动时的命令提示,在448行 pxe-prompt="Press F8 for menu.", 5 #pxe服务,在458行 pxe-service=x86PC,"Install CentOS 7 from network server 192.168.10.7", pxelinux #启用tftp服务,在473行 enable-tftp #tftp文件共享的根目录，在476行 tftp-root=/var/lib/tftpboot EOF grep -Ev '^#|^$' /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 < 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 #脚本编写完毕