安装keepalived
LVS+Keepalived 负载均衡
LVS是Linux Virtual Server的简写，即Linux虚拟服务器
Keepalived用作RealServer的健康状态检查
在安装keepalive过程中可能会出现的问题:
缺少依赖包, 搜索下载对应包安装即可, 我安装过程中报Popt libraries is required
下载Popt安装:
yum -y install wget
wget?http://rpm5.org/files/popt/popt-1.16.tar.gz?
tar?zxvf?popt-1.16.tar.gz?
cd?popt-1.16?
./configure?
make? && make install
