软件版本：
pcre8.36 ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.36.tar.gz
keepalived1.2.19
http://www.keepalived.org/software/keepalived-1.2.19.tar.gz
nginx1.8.0
http://nginx.org/download/nginx-1.8.0.tar.gz
安装步骤
安装pcre
tar -zxvf pcre-8.36.tar.gz
cd pcre-8.36
./configure --prefix=/usr/local/pcre
make && make install
安装keepalived
tar -zxvf keepalived-1.2.19.tar.gz
cd keepalived-1.2.19
./configure --prefix=/usr/local/keepalived
make && make install
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
mkdir –pv /etc/keepalived
cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/
ln -s /usr/local/keepalived/sbin/keepalived /sbin/
chkconfig keepalived on
安装nginx
tar -zxvf nginx-1.8.0.tar.gz
cd nginx-1.8.0
./configure --prefix=/usr/local/nginx --with-pcre=/usr/local/pcre/
make && make install