LINUX系统下智能DNS的配置之实例篇
LINUX 系统下智能DNS 的配置之实例篇LINUX , 智能, 系统, DNS , 实例实施步骤:1. 电信和网通各一台服务器2. 使用BIND9做智能DNS, 自动根据客户端IP 来判断, 网通
LINUX 系统下智能DNS 的配置之实例篇
LINUX , 智能, 系统, DNS , 实例
实施步骤:
1. 电信和网通各一台服务器
2. 使用BIND9做智能DNS, 自动根据客户端IP 来判断, 网通的用户解析出网通的IP, 电信的解析出电信IP.
3. 将其中一台服务器做成反向代理, 这样数据就可以同步了, 不需要为同步数据麻烦.
注意:
如果你想让自己的服务器不同线路访问不同的服务器,
或者某个区域访问自己区域的服务器使用该view 功能就可以实现
比如:国外的访问国外服务器 国内访问国内服务器.
测试做的域名
www.sc-linux.com
电信IP218.6.242.216
网通IP61.182.49.7
电信用户PING www.sc-linux.com 会解析到218.6.242.216
网通用户PING www.sc-linux.com 会解析到61.182.49.7
批注:该功能主要是解决了北京某门户网站的南北互不相访的问题.
于2006-4-4日, 北京 by mingfor.com.
配置步骤：
1、 软件列表
BIND 9.3.2
ftp://ftp.isc.org/isc/bind9/9.3.2/bind-9.3.2.tar.gz
2、 安装BIND 9
安装BIND9：
# tar zxvf bind-9.3.2.tar.gz
# cd bind-9.3.2
,# ./configure
--prefix=/usr/local/named
--disable-ipv6
# make && make install
建立BIND 用户：
# groupadd bind
# useradd -g bind -d /usr/local/named -s /sbin/nologin bind
创建配置文件目录：
# mkdir –p /usr/local/named/etc
# chown bind:bind /usr/local/named/etc
# chmod 700 /usr/local/named/etc
创建主要的配置文件：
# vi /usr/local/named/etc/named.conf
===========================named.conf======================= acl "trust-lan" { 127.0.0.1/8; 192.168.0.0/16;};
options {
directory "/usr/local/named/etc/";
pid-file "/var/run/named/named.pid";
version "0.0.0";
datasize 40M;
allow-transfer {
"trust-lan";};
recursion yes;
allow-notify {
"trust-lan";
};
allow-recursion {
"trust-lan";
};
auth-nxdomain no;
forwarders {
202.99.160.68;
202.99.168.8;};
};
,logging {
channel warning
{ file "/var/log/named/dns_warnings" versions 3 size 1240k; severity warning;
print-category yes;
print-severity yes;
print-time yes;
};
channel general_dns
{ file "/var/log/named/dns_logs" versions 3 size 1240k; severity info;
print-category yes;
print-severity yes;
print-time yes;
};
category default { warning; };
category queries { general_dns; };
};
zone "." {
type hint;
file "named.root";
};
acl "CNC" {
58.16.0.0/16;
58.17.0.0/17;
58.17.128.0/17;
58.18.0.0/16;
58.19.0.0/16;
58.20.0.0/16;
58.21.0.0/16;
58.22.0.0/15;
58.240.0.0/15;
58.242.0.0/15;
58.244.0.0/15;
58.246.0.0/15;
58.248.0.0/13;
,60.0.0.0/13; 60.8.0.0/15; 60.10.0.0/16; 60.11.0.0/16; 60.12.0.0/16; 60.13.0.0/18; 60.13.128.0/17; 60.14.0.0/15; 60.16.0.0/13; 60.24.0.0/14; 60.30.0.0/16; 60.31.0.0/16; 60.208.0.0/13; 60.216.0.0/15; 60.218.0.0/15; 60.220.0.0/14; 61.48.0.0/13; 61.133.0.0/17; 61.134.96.0/19; 61.134.128.0/17; 61.135.0.0/16; 61.137.128.0/17; 61.138.0.0/17; 61.138.128.0/18; 61.139.128.0/18; 61.148.0.0/15; 61.156.0.0/16; 61.159.0.0/18; 61.161.0.0/18; 61.161.128.0/17; 61.162.0.0/16; 61.163.0.0/16; 61.167.0.0/16; 61.168.0.0/16; 61.176.0.0/16; 61.179.0.0/16;
,61.181.0.0/16; 61.182.0.0/16; 61.189.0.0/17; 125.32.0.0/16; 125.40.0.0/13; 202.96.0.0/18; 202.96.64.0/21; 202.96.72.0/21; 202.97.128.0/18; 202.97.224.0/21; 202.97.240.0/20; 202.98.0.0/21; 202.98.8.0/21; 202.99.64.0/19; 202.99.96.0/21; 202.99.128.0/19; 202.99.160.0/21; 202.99.168.0/21; 202.99.176.0/20; 202.99.208.0/20; 202.99.224.0/21; 202.99.232.0/21; 202.99.240.0/20; 202.102.128.0/21; 202.102.224.0/21; 202.102.232.0/21; 202.106.0.0/16; 202.107.0.0/17; 202.108.0.0/16; 202.110.0.0/17; 202.111.128.0/18; 203.93.8.0/24; 203.93.192.0/18; 210.13.128.0/17; 210.14.160.0/19; 210.14.192.0/19;
,210.15.32.0/19; 210.15.96.0/19; 210.15.128.0/18; 210.21.0.0/16; 210.52.128.0/17; 210.53.0.0/17; 210.53.128.0/17; 210.74.96.0/19; 210.74.128.0/19; 210.82.0.0/15; 218.8.0.0/14; 218.12.0.0/16; 218.21.128.0/17; 218.24.0.0/14; 218.56.0.0/14; 218.60.0.0/15; 218.67.128.0/17; 218.68.0.0/15; 218.104.0.0/14; 219.154.0.0/15; 219.156.0.0/15; 219.158.0.0/17; 219.158.128.0/17; 219.159.0.0/18; 220.252.0.0/16; 221.0.0.0/15; 221.2.0.0/16; 221.3.0.0/17; 221.3.128.0/17; 221.4.0.0/16; 221.5.0.0/17; 221.5.128.0/17; 221.6.0.0/16; 221.7.0.0/19; 221.7.32.0/19; 221.7.64.0/19;
,221.7.96.0/19; 221.8.0.0/15; 221.10.0.0/16; 221.11.0.0/17; 221.11.128.0/18; 221.11.192.0/19; 221.12.0.0/17; 221.12.128.0/18; 221.13.0.0/18; 221.13.64.0/19; 221.13.96.0/19; 221.13.128.0/17; 221.14.0.0/15; 221.192.0.0/15; 221.194.0.0/16; 221.195.0.0/16; 221.196.0.0/15; 221.198.0.0/16; 221.199.0.0/19; 221.199.32.0/20; 221.199.128.0/18; 221.199.192.0/20; 221.200.0.0/14; 221.204.0.0/15; 221.206.0.0/16; 221.207.0.0/18; 221.207.64.0/18; 221.207.128.0/17; 221.208.0.0/14; 221.212.0.0/16; 221.213.0.0/16; 221.216.0.0/13; 222.128.0.0/14; 222.132.0.0/14; 222.136.0.0/13; 222.160.0.0/15;
,222.162.0.0/16;
222.163.0.0/19;
222.163.32.0/19;
222.163.64.0/18;
222.163.128.0/17;
};
view "view_cnc" {
match-clients { CNC; }; zone "." {
type hint;
file "named.root";
};
zone "0.0.127.IN-ADDR.ARPA" { type master;
file "localhost.rev"; };
include "master/cnc.def"; };
view "view_any" {
match-clients { any; }; zone "." {
type hint;
file "named.root";
};
zone "0.0.127.IN-ADDR.ARPA" { type master;
file "localhost.rev"; };
include "master/telecom.def"; };
添加完成后，保存。
更新根区文件：
# cd /usr/local/named/etc/
# wget ftp://ftp.internic.org/domain/named.root
,创建PID 和日志文件：
# mkdir /var/run/named/
# chmod 777 /var/run/named/
# chown bind:bind /var/run/named/
# mkdir /var/log/named/
# touch /var/log/named/dns_warnings
# touch /var/log/named/dns_logs
# chown bind:bind /var/log/named/*
# mkdir master
# touch master/cnc.def
# touch master/telecom.def
生成rndc-key ：
# cd /usr/local/named/etc/
# ../sbin/rndc-confgen > rndc.conf
把rndc.conf 中：
# Use with the following in named.conf, adjusting the allow list as needed:
后面以的部分加到/usr/local/named/etc/named.conf中并去掉注释
运行测试：
# /usr/local/named/sbin/named -gc /usr/local/named/etc/named.conf &
状态检查：
# /usr/local/named/sbin/rndc status
建立启动脚本：
# vi /etc/init.d/named
============================== named.sh============================ #!/bin/bash
#
# named a network name service.
#
#
# chkconfig: 545 35 75
,# description: a name server
#
if [ `id -u` -ne 0 ]
then
echo "ERROR:For bind to port 53,must run as root."
exit 1
fi
case "" in
start)
if [ -x /usr/local/named/sbin/named ]; then
/usr/local/named/sbin/named -u bind -c /usr/local/named/etc/named.conf && echo . && echo 'BIND9 server started.'
fi
;;
stop)
kill `cat /var/run/named/pid` && echo . && echo 'BIND9 server stopped.' ;;
restart)
echo .
echo "Restart BIND9 server"
stop
sleep 10
start
;;
*)
echo " start | stop | restart"
;;
esac
===============================named.sh============================ # chmod 755 /etc/init.d/named
# chown root:root /etc/init.d/named
# chkconfig --add named
# chkconfig named on
到这里bind 已经安装完毕 .下面是解析部分.