Linux 自动化部署DNS服务器
1.首先配置主DNS服务器的IP地址，DNS地址一个写主dns的IP地址，一个写从dns的地址，这里也可以不写，在测试的时候在/etc/resolv.conf中添加记录。 
2.配置从dns的IP地址
3. 运行脚本，选择1,部署主DNS服务器 
4.运行完脚本之后，主DNS就部署完成了，查看配置文件 /etc/named.conf 
5. 查看区域文件 区域文件在 /var/named/ 
6.本地测试主DNS服务器是否部署成功
7. 在从DNS服务器上运行脚本，选择2，部署从DNS服务
8.查看 
9.查看 /var/named/slaves/目录下，可以看到生成两个文件，说明从dns配置成功，从主dns获得区域文件
10.在另一个客户端测试，在/etc/resolv.conf添加如下两条记录
11. 测试，下图可以看到主、从DNS都正常 
源码如下：
#!/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:" Num case $Num in
1) #关闭防火墙,避免影响实验 service iptables stop &>/dev/null setenforce 0 &>/dev/null named="/etc/named.conf" #定义函数 alterDNS(){ #配置主文件 rm -fr $named touch $named #获得本机IP ETH=$(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<<OK 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.zone cat >>/var/named/$AreaName.zone<<OK \$TTL 86400 @ IN SOA $AreaName. admin.$AreaName. ( 2019032211 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum @ IN NS ns1.$AreaName. IN NS ns2.$AreaName. IN MX 10 mail.$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<<OK \$TTL 86400 @ 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 $named ] then
echo "当前电脑没有安装DNS服务,正在安装,请稍等....."
mount /dev/sr0 /mnt &>/dev/null #搭建本地yum仓库 cd /etc/yum.repos.d cat >>yuzly.repo<<OK [yuzly] name=yuzly baseurl=file:///mnt
enabled=1 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
OK yum install bind -y &>/dev/null #调用函数 alterDNS service named start &>/dev/null
else alterDNS service named start &>/dev/null
fi ;; 2) #关闭防火墙 service iptables stop &>/dev/null setenforce 0 &>/dev/null #修改配置文件 #获得本机IP ETH=$(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<<OK 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.d cat >>yuzly.repo<<OK [yuzly] name=yuzly baseurl=file:///mnt
enabled=1 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
OK yum install bind -y &>/dev/null
rm -fr $named touch $named #调用函数 setArea else
rm -fr $named touch $named setArea fi ;; *) echo "请输入正确的数字!" ;; esac
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Linux DNS服务配置:https://www.cnblogs.com/yuzly/p/10581688.html