shell脚本正向DNS解析

#! /bin/bash

#这是正向解析DNS的shell脚本

echo "安装软件包"
yum -y install bind &> /dev/null

echo "编辑主配置文件"
cat << EOF > /etc/named.conf
options {
directory "/var/named";
};

zone "crushlinux.com" IN {
type master;
file "crushlinux.lan";
};
EOF

echo "编辑crushlinux.lan文件"
cat << EOF > /var/named/crushlinux.lan
$TTL 1D
@ IN SOA crushlinux.com. root.ns1.crushlinux.com. (
20190824
1D
1H
1W
3H
)

NS ns1.crushlinux.com.
MX 10 mail.crushlinux.com.
ns1 A 192.168.200.111
www A 192.168.200.112
EOF

echo "修改属主成功"

chgrp named /var/named/crushlinux.lan

echo "修改配置文件"

echo "nameuserver 192.168.200.111" > /etc/resolv.conf
echo "192.168.200.111 ns1.crushlinux.com" >> /etc/hosts

echo "开启服务"
systemctl start named
systemctl enable named