今天小编跟大家讲解下有关科技常识:Linux下用dnsmasq做dns cache server的配置方法,相信小伙伴们对这个话题应该也很关注吧,小编也收集到了有关科技常识:Linux下用dnsmasq做dns cache server的配置方法的相关资料,希望小伙伴会喜欢也能够帮助大家。
目前最新版是2.7.1 ,可去其FTP下载:http://www.thekelleys.org.uk/dnsmasq/
安装过程比较简单
yum -y install dnsmasq* wget http://www.keepalived.org/software/keepalived-1.2.9.tar.gztar zxvf keepalived-1.2.9.tar.gzcd keepalived-1.2.9./configure --prefix=/usr/local/keepalivedmake && make installmkdir /etc/keepalivedcp /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 keepalivedchkconfig --level 35 keepalived onkeepalived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.confcache-size=1000conf-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:
复制代码 代码如下:sudo pacman -S --needed dnsmasqcd /etc
[admin@huangye etc]$ sudo cp -v dnsmasq.conf{,.orig}`dnsmasq.conf' -> `dnsmasq.conf.orig'
[admin@huangye etc]$ sudo vim dnsmasq.conf 相比来说,dnsmasq的配置简单多了:复制代码 代码如下:resolv-file=/etc/dnsmasq.resolv.confaddn-hosts=/etc/dnsmasq.hostslocal=/localnet/no-dhcp-interface=eth0conf-dir=/etc/dnsmasq.d
复制代码 代码如下:[admin@huangye etc]$ sudo cp -v resolv.conf dnsmasq.resolv.confPassword: `resolv.conf' -> `dnsmasq.resolv.conf'sudo mkdir /etc/dnsmasq.dsudo touch /etc/dnsmasq.hosts
sudo /etc/rc.d/dnsmasq start
最后,别忘记加入rc.conf DAEMONS,注意要在network后面。
dnsmasq 可从额外的hosts文件读取条目,如可以这样添加正向解析:
echo"IP地址 域名"> /etc/dnsmasq.hosts
另外,重启dnsmasq可以用SIGHUP(可以在修改hosts文件后,让配置生效)
killall -s SIGHUP dnsmasq
查看服务状态:
netstat -tunltcp 0 0 0.0.0.0:53 0.0.0.0:* LISTEN udp 0 0 0.0.0.0:53 0.0.0.0:*
再dig 一下,发现稳定在4ms ,我晕,同样的配置,我在一台ubuntu server 10.04 上面dig 是1ms ,在我本地居然在4ms ,
来源:爱蒂网