正向dns脚本

#!/bin/bash

cat << END >> /etc/hosts
192.168.200.132 ns1.wangrui.com
END
echo "hosts文件成功"

cat << EOF >> /etc/resolv.conf
nameserver 192.168.200.132
EOF
echo "dns文件成功"
[ -d /etc/named.conf ] || yum -y install bind bind-utils bind-libs &> /dev/null

echo "bind安装完成"
cat << OBG > /etc/named.conf

options {
        directory       "/var/named";

};

zone "wangrui.com" IN {
        type master;
        file "wangrui.com.zheng";
};
OBG
echo "主配置文件成功"
cat << OBGC > /var/named/wangrui.com.zheng
$TTL    1D
@       IN      SOA     wangrui.com.        admin.wangrui.com. (
                20190826
                1D
                1H
                1W
                3H )
        NS      ns1.wangrui.com.
        MX  10  mail.wangrui.com.
www     A       192.168.200.100
xiao    A       192.168.200.151
file    CNAME   xiao
*       A       192.168.200.121
OBGC

echo "文件成功"
#启动服务
systemctl restart named
systemctl enable  named