Linux下用dnsmasq做dns cache server的配置方法
目前最新版是2.7.1 ,可去其FTP下载:
安装过程比较简单
yum -y install dnsmasq* wget http://www.keepalived.org/software/keepalived-1.2.9.tar.gz tar zxvf keepalived-1.2.9.tar.gz cd keepalived-1.2.9 ./configure --prefix=/usr/local/keepalived make && make install mkdir /etc/keepalived cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/ ln -s /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/ ln -s /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/ ln -s /usr/local/keepalived/sbin/keepalived /usr/sbin/ chkconfig --add keepalived chkconfig --level 35 keepalived on
keepalived的配置很简单,只需要配置一个VIP可以在两台Server之间飘来飘去就可以实现主备了
! Configuration File for keepalived global_defs { notification_email { xxx@xxx.com } notification_email_from xxx@xxx.com smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id LVS_DEVEL } vrrp_instance dnscache { state MASTER // 另一台配置BACKUP interface eth1 // 在哪个接口上进行服务器状态检测 virtual_router_id 51 priority 180 // BACKUP机器上配置100 advert_int 1 // 检查间隔,单位为秒 authentication { auth_type PASS auth_pass 1234 } virtual_ipaddress { // VIP设置,指定到内网网卡 192.168.100.99/24 dev eth1 } }
dnsmasq的配置也很简单
resolv-file=/etc/resolv.dnsmasq.conf cache-size=1000 conf-dir=/etc/dnsmasq.d
将dns地址写入到/etc/resolv.dnsmasq.conf文件中
echo "nameserver 8.8.8.8" > /etc/resolv.dnsmasq.conf
本机和局域网其它全部的服务器dns解析都用它
echo "nameserver 192.168.100.99" > /etc/resolv.conf
最后找一台局域网Server验证一下,如果能解析就说明正常了.
nslookup www.google.cn 192.168.100.99
此方案只适合小型企业,规模少的情况下使用,解析量大的时候还是用bind最好。
下面是其它网友的补充:
代码如下:
sudo pacman -S --needed dnsmasq
cd /etc
cd /etc
[admin@huangye etc]$ sudo cp -v dnsmasq.conf{,.orig}
`dnsmasq.conf' -> `dnsmasq.conf.orig'
[admin@huangye etc]$ sudo vim dnsmasq.conf