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

! 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
  }
}

resolv-file=/etc/resolv.dnsmasq.conf
cache-size=1000
conf-dir=/etc/dnsmasq.d