Detailed shell script (9)-One-click deployment of DNS forward resolution

1. DNS forward resolution

For details, please click: DNS forward resolution

Two, shell script one-click deployment

#!/bin/bash
#判断是否有本地yum源，如果没有，则创建本地yum源
cd /etc/yum.repos.d
if [ ! -e local.repo ]
then
mkdir repos.bak
mv *.repo repos.bak
echo '[local]
name=local
baseurl=file:///mnt
gpgcheck=0
enabled=1' > local.repo
fi
#挂载并安装bind软件包
mount /dev/sr0 /mnt
yum -y install bind
#修改主配置文件，监听地址为所有（any），允许解析网段为所有（any），注释掉IPV6
sed -i -e "13 s/127.0.0.1/any/" -e "21 s/localhost/any/" -e "14 s/^/#/" /etc/named.conf
#在区域配置文件中添加需要解析的地址和区域数据配置文件
echo "zone \"kgc.com\" IN {
    
    
        type master;
        file \"kgc.com.zone\";
        allow-update {
    
     none; };
};" >> /etc/named.rfc1912.zones
#保留原有属性进行模板文件的复制并重命名
cp -p /var/named/named.localhost /var/named/kgc.com.zone
#修改DNS区域名和服务器名称，记录主机IP地址，记录正向解析所对应的IP
sed -i "2 s/\@/kgc.com./2" -e "8 s/\@/kgc.com./" -e "9,\$d" /var/named/kgc.com.zone
echo -e '\tA\t192.168.184.40\n
www\tIN\tA\t192.168.184.100' >> /var/named/kgc.com.zone
#修改 DNS 地址
sed -i "2c nameserver 192.168.184.40" /etc/resolv.conf
#关闭防火墙和增强型安全机制，并启动服务
systemctl stop firewalld.service
setenforce 0
systemctl start named