#!/bin/bash

#该脚本用于自动化部署主DNS服务器与从DNS服务器

#作者:雨中落叶

#博客:https://www.cnblogs.com/yuzly/

echo "****************************

1.部署主dns服务器2.部署从dns服务器****************************"read -p "请输入部署选项:"Numcase $Num in

1)

#关闭防火墙,避免影响实验

service iptables stop&>/dev/nullsetenforce0 &>/dev/nullnamed="/etc/named.conf"#定义函数

alterDNS(){

#配置主文件rm -fr $namedtouch$named

#获得本机IP

ETH=$(ifconfig |grep "^eth" |awk '{print $1}')

lIP=$(ifconfig $ETH |grep "inet addr"|awk '{print $2}'|awk -F: '{print $2}')

read-p "请输入你要创建的正向区域名:"AreaName

read-p "请输入从DNS服务器的IP地址:"slaveIP

fan=$(echo $lIP |awk -F. '{print $3"."$2"."$1}')cat >>$named<

options {

listen-on port 53{ $lIP; };

listen-on-v6 port 53 { ::1; };

directory"/var/named";

allow-query { any; };

};

zone"."IN {

type hint;file "named.ca";

};

zone"$AreaName"IN {

type master;file "$AreaName.zone";

allow-transfer { $slaveIP; };

};

zone"$fan.in-addr.arpa"IN {

type master;file "$fan.in-addr.arpa.zone";

allow-transfer { $slaveIP; };

};

OK

#配置正向解析文件touch /var/named/$AreaName.zonecat >>/var/named/$AreaName.zone<

$TTL86400@ IN SOA $AreaName. admin.$AreaName. (2019032211; serial

1D ; refresh

1H ; retry

1W ; expire

3H ) ; minimum

@ IN NS ns1.$AreaName.

IN NS ns2.$AreaName.

IN MX10mail.$AreaName.

ns1 IN A $lIP

ns2 IN A $slaveIP

www IN A $lIP

mail IN A $lIP

news IN CNAME www.$AreaName.

OK

#配置反向解析文件touch /var/named/$fan.in-addr.arpa.zone

fourthlIP=$(echo $lIP |awk -F. '{print $4}')

fourthslaveIP=$(echo $slaveIP |awk -F. '{print $4}')cat >>/var/named/$fan.in-addr.arpa.zone<

$TTL86400@ IN SOA $AreaName. admin.$AreaName. (2019032211; serial

1D ; refresh

1H ; retry

1W ; expire

3H ) ; minimum

@ IN NS ns1.$AreaName.

IN NS ns2.$AreaName.

$fourthlIP IN PTR ns1.$AreaName.

$fourthslaveIP IN PTR ns2.$AreaName.

$fourthlIP IN PTR www.$AreaName.

$fourthlIP IN PTR mail.$AreaName.

$fourthlIP IN PTR news.$AreaName.

OK

}if [ ! -f $named ]then

echo "当前电脑没有安装DNS服务,正在安装,请稍等....."

mount /dev/sr0 /mnt &>/dev/null#搭建本地yum仓库

cd/etc/yum.repos.dcat >>yuzly.repo<

[yuzly]

name=yuzly

baseurl=file:///mnt

enabled=1gpgcheck=1gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

OKyum install bind -y &>/dev/null#调用函数

alterDNS

service named start&>/dev/null

elsealterDNS

service named start&>/dev/null

fi;;2)

#关闭防火墙

service iptables stop&>/dev/nullsetenforce0 &>/dev/null#修改配置文件

#获得本机IP

ETH=$(ifconfig |grep "^eth" |awk '{print $1}')

lIP=$(ifconfig $ETH |grep "inet addr"|awk '{print $2}'|awk -F: '{print $2}')

named="/etc/named.conf"read-p "请输入主服务器创建的正向区域名:"AreaName

read-p "请输入主DNS服务器的IP地址:"IP

fan=$(echo $IP |awk -F. '{print $3"."$2"."$1}')

setArea(){cat >>$named<

options {

listen-on port 53{ $lIP; };

directory"/var/named";

allow-query { any; };

};

zone"$AreaName"IN {

type slave;

masters { $IP; };file "slaves/$AreaName.zone";

};

zone"$fan.in-addr.arpa"IN {

type slave;

masters { $IP; };file "slaves/$fan.in-addr.arpa.zone";

};

OK

service named start&>/dev/null}if [ ! -f $named ]then

echo "当前电脑没有安装DNS服务,正在安装,请稍等....."

mount /dev/sr0 /mnt &>/dev/null#搭建本地yum仓库

cd/etc/yum.repos.dcat >>yuzly.repo<

[yuzly]

name=yuzly

baseurl=file:///mnt

enabled=1gpgcheck=1gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

OKyum install bind -y &>/dev/null

rm -fr $namedtouch$named

#调用函数

setAreaelse

rm -fr $namedtouch$named

setAreafi;;*)echo "请输入正确的数字!";;esac