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
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1,yum 安装
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yum install dnsmasq -y |
或者源码安装
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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 |
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cp dnsmasq.conf.example /etc/dnsmasq .conf mkdir -p /etc/dnsmasq .d #这个目录备用 |
2,dnsmasq配置
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#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。 |
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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
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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 |
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vi /etc/dnsmasq .d /dnsmasq .hosts 10.19.21.249 aop.baim.com |
3,启动服务
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/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 |
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#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 |
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#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
参考文章:http://charlie928.blog.51cto.com/3741218/1671914