Linux dns安装脚本

以下是一个简单的Linux DNS安装脚本，可以在CentOS或Ubuntu等Linux发行版上运行：

#!/bin/bash

# 安装bind-utils和bind软件包
if [ $EUID -ne 0 ]; then
  echo "请使用root用户运行此脚本"
  exit 1
fi

if [ -f /etc/redhat-release ]; then
  yum install -y bind-utils bind
elif [ -f /etc/lsb-release ]; then
  apt-get update
  apt-get install -y bind9 bind9utils
else
  echo "不支持的操作系统"
  exit 1
fi

# 配置DNS服务器
echo "请输入DNS服务器IP地址："
read dns_ip

echo "请输入DNS域名："
read domain_name

echo "正在配置DNS服务器..."
cat <<EOF > /etc/named.conf
options {
        listen-on port 53 { any; };
        listen-on-v6 port 53 { ::1; };
        directory       "/var/named";
        dump-file       "/var/named/data/cache_dump.db";
        statistics-file "/var/named/data/named_stats.txt";
        memstatistics-file "/var/named/data/named_mem_stats.txt";
        allow-query     { any; };

        recursion yes;
        dnssec-enable yes;
        dnssec-validation yes;
        dnssec-lookaside auto;

        /* Path to ISC DLV key */
        bindkeys-file "/etc/named.iscdlv.key";

        managed-keys-directory "/var/named/dynamic";
};

zone "$domain_name" IN {
        type master;
        file "$domain_name.zone";
        allow-update { none; };
};

zone "0.0.127.in-addr.arpa" IN {
        type master;
        file "named.local";
        allow-update { none; };
};

include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";
EOF

cat <<EOF > /var/named/$domain_name.zone
\$TTL 86400
@   IN  SOA ns1.$domain_name. root.$domain_name. (
               2011041322 ; serial
               3600       ; refresh
               1800       ; retry
               604800     ; expire
               86400      ; minimum TTL
            )
@   IN  NS  ns1.$domain_name.
@   IN  A   $dns_ip
ns1 IN  A   $dns_ip
EOF

echo "正在启动DNS服务器..."
if [ -f /etc/redhat-release ]; then
  systemctl start named
  systemctl enable named
elif [ -f /etc/lsb-release ]; then
  service bind9 start
  update-rc.d bind9 defaults
fi

echo "DNS服务器已成功配置！"
exit 0

注意，在运行此脚本之前，请确保您以root用户身份登录，并且您已经安装了bind-utils和bind（CentOS）或bind9和bind9utils（Ubuntu）。