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 "****************************
.部署主dns服务器
.部署从dns服务器
****************************"
read -p "请输入部署选项:" Num
case $Num in
)
#关闭防火墙,避免影响实验
service iptables stop &>/dev/null
setenforce &>/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 { $lIP; };
listen-on-v6 port { ::; };
directory "/var/named";
allow-query { any; };
};
zone "." IN {
type hint;
file "named.ca";
};
zone "$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
@ IN SOA $AreaName. admin.$AreaName. (
; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
@ IN NS ns1.$AreaName.
IN NS ns2.$AreaName.
IN MX 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
@ IN SOA $AreaName. admin.$AreaName. (
; 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 $named ]
then
echo "当前电脑没有安装DNS服务,正在安装,请稍等....."
mount /dev/sr0 /mnt &>/dev/null
#搭建本地yum仓库
cd /etc/yum.repos.d
cat >>yuzly.repo<<OK
[yuzly]
name=yuzly
baseurl=file:///mnt
enabled=
gpgcheck=
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
OK
yum install bind -y &>/dev/null
#调用函数
alterDNS
service named start &>/dev/null
else
alterDNS
service named start &>/dev/null
fi
;;
)
#关闭防火墙
service iptables stop &>/dev/null
setenforce &>/dev/null
#修改配置文件
#获得本机IP
ETH=$(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 { $lIP; };
directory "/var/named";
allow-query { any; };
};
zone "$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=
gpgcheck=
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