如果ls /usr/src/kernels/为空：
yum install kernel-devel
[root@nagios_server ~]# ls /usr/src/kernels/
2.6.32-696.6.3.el6.x86_64
ln -s /usr/src/kernels/2.6.32-696.6.3.el6.x86_64/ /usr/src/linux
cd /root/tool
wget http://www.linuxvirtualserver.org/software/kernel-2.6/ipvsadm-1.26.tar.gz
yum install libnl* popt* -y
tar zvf ipvsadm-1.26
cd ipvsadm-1.26
make
make install
/sbin/ipvsadm
lsmod | grep ip_vs
