yum install dnsmasq -y
cp /etc/dnsmasq.conf /etc/dnsmasq.conf.bak
echo "" > /etc/dnsmasq.conf
vi /etc/dnsmasq.conf

port=53
strict-order
listen-address=127.0.0.1
conf-dir=/etc/dnsmasq.d
#address=/test.com/1.2.3.4

vi /etc/dnsmasq.d/dns.conf
address=/test.com/1.2.3.4

chkconfig dnsmasq on
/etc/init.d/dnsmasq restart

启动提示"dnsdomainname: Unknown host"的话

改下主机名，指向127.0.0.1就好了。

hostname查主机名，/etc/hosts加入后OK。