1、升级内核到3.10.x
方式一、yum安装
cd /etc/yum.repos.d
wget http://www.hop5.in/yum/el6/hop5.repo
yum install kernel-ml-aufs kernel-ml-aufs-devel
方式二、rpm安装（推荐）
rpm -ivh kernel-ml-aufs-3.10.5-3.el6.x86_64.rpm kernel-ml-aufs-devel-3.10.5-3.el6.x86_64.rpm
rpm可以到http://down.51cto.com/data/1903250下载
2、修改/etc/grub.conf中default=0
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (3.10.5-3.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-3.10.5-3.el6.x86_64 ro root=UUID=2d12dbef-aa63-4ad4-98bf-5beb0f9bfc48 rd_NO_LUKS rd_NO_LVM.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
initrd /initramfs-3.10.5-3.el6.x86_64.img
title CentOS (2.6.32-358.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-358.el6.x86_64 ro root=UUID=2d12dbef-aa63-4ad4-98bf-5beb0f9bfc48 rd_NO_LUKS rd_NO_LVM.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
initrd /initramfs-2.6.32-358.el6.x86_64.img
3、重启系统
reboot
4、验证内核版本
[root@vmname1 ~]# uname -r
3.10.5-3.el6.x86_64
5、查看内核是否支持aufs
[root@vmname1 ~]# grep aufs /proc/filesystems
nodev aufs
作者：dreamer_lk
链接：https://www.jianshu.com/p/42e934bb4b05