系统:centos6.5
公司内部需求一台dns server,解析内部域名(该域名不需要在公网上解析)
安装了"bind bind-utils"包,配置里设置转发到外部电信dns,dhcp服务设置分发dns服务为该服务器。然后解析内部很通畅,但是到外部(如百度,163,新浪)等网站很慢。
不知道是不是配置有问题,找不出。
所以就使用dnsmasq试试。
下面是安装操作步骤
===================
1,yum 安装
yum install dnsmasq -y
或者源码安装
cd /tmp && wget http://www.thekelleys.org.uk/dnsmasq/dnsmasq-2.71.tar.gz tar -zxvf dnsmasq-2.71.tar.gz && cd dnsmasq-2.71 make install
cp dnsmasq.conf.example /etc/dnsmasq.conf mkdir -p /etc/dnsmasq.d #这个目录备用
2,dnsmasq配置
#主要有三个文件: #/etc/dnsmasq.conf #/etc/dnsmasq.d/resolv.dnsmasq.conf #/etc/dnsmasq.d/dnsmasq.hosts #第一个是系统默认必须的,后面两个可以自行建立,放置的路径也可以根据自己需要定义。
vi /etc/dnsmasq.conf #ITGeeker每次开启都提示错误,目的是让dnsmasq读取目录内所有配置文件 #conf-dir=/etc/dnsmasq.d #让dnsmasq读取你设定的resolv-file #no-resolv resolv-file=/etc/dnsmasq.d/resolv.dnsmasq.conf no-poll strict-order #不读取系统hosts,读取你设定的 no-hosts addn-hosts=/etc/dnsmasq.d/dnsmasq.hosts #dnsmasq日志设置 log-queries log-facility=/var/log/dnsmasq.log #dnsmasq缓存设置 cache-size=1024 #单设置127只为本机使用,加入本机IP为内部全网使用 listen-address=127.0.0.1,10.19.21.249
#在/etc/dnsmasq.d目录下新建2个文件
vi /etc/dnsmasq.d/resolv.dnsmasq.conf #nameserver 127.0.0.1 不应该添加 nameserver 202.96.209.5 nameserver 202.96.209.133 nameserver 223.5.5.5 nameserver 223.6.6.6 nameserver 114.114.114.114 nameserver 8.8.4.4 #nameserver 8.8.8.8
vi /etc/dnsmasq.d/dnsmasq.hosts 10.19.21.249 aop.baim.com
3,启动服务
/etc/init.d/dnsmasq start chkconfig dnsmasq on #如果是源码编译安装的 启动: /usr/local/sbin/dnsmasq 验证:netstat -tunlp|grep 53 关闭:killall -KILL dnsmasq 重启: pkill -9 dnsmasp && /usr/local/sbin/dnsmasq -h
#服务启动脚本
vi /etc/init.d/dnsmasq
#!/bin/sh
#
# Startup script for the <span class=‘wp_keywordlink_affiliate‘><a href="http://itgeeker.net/tag/dns/" title="View all posts in DNS" target="_blank">DNS</a></span> caching server
#
# chkconfig: - 49 50
# description: This script starts your DNS caching server
# processname: dnsmasq
# pidfile: /var/run/dnsmasq
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0
dnsmasq=/usr/local/sbin/dnsmasq
[ -f $dnsmasq ] || exit 0
RETVAL=0
# See how we were called.
case "$1" in
start)
if [ $UID -ne 0 ] ; then
echo "User has insufficient privilege."
exit 4
fi
echo -n "Starting dnsmasq: "
daemon $dnsmasq $OPTIONS
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && touch /var/lock/subsys/dnsmasq
;;
stop)
if test "x`pidof dnsmasq`" != x; then
echo -n "Shutting down dnsmasq: "
killproc dnsmasq
fi
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/dnsmasq /var/run/dnsmasq.pid
;;
status)
status dnsmasq
RETVAL=$?
;;
reload)
echo -n "Reloading dnsmasq: "
killproc dnsmasq -HUP
RETVAL=$?
echo
;;
force-reload)
# new configuration takes effect only after restart
$0 stop
$0 start
RETVAL=$?
;;
restart)
$0 stop
$0 start
RETVAL=$?
;;
condrestart)
if test "x`/sbin/pidof dnsmasq`" != x; then
$0 stop
$0 start
RETVAL=$?
fi
;;
*)
echo "Usage: $0 {start|stop|restart|reload|condrestart|status}"
exit 2
esac
exit $RETVAL#如果你是本地编辑上传的,提示找不到文件记得 set ff=unix #再赋予执行的权限 chmod +x /etc/init.d/dnsmasq /etc/init.d/dnsmasq start chkconfig dnsmasq on
注:完成后需要在DHCP服务端设置DNS服务器地址,然后客户端会自动获取到该DNS地址。需要重客户端本地网络。
查看本地dns,是否能够获取地址。
然后访问域名,是否能够解析。
本文出自 “charlie_cen” 博客,请务必保留此出处http://charlie928.blog.51cto.com/3741218/1671914
原文地址:http://charlie928.blog.51cto.com/3741218/1671914