原帖地址：http://www.111cn.net/sys/CentOS/79882.htm

遇到错误：

Transaction Check Error:
installing package kernel-2.6.32-504.8.1.el6.x86_64 needs 16MB on the /boot filesystem

Error Summary

Disk Requirements:
At least 16MB more space needed on the /boot filesystem.

查看一下：

df -h

Filesystem Size Used Avail Use% Mounted on
/dev/sda3 458G 214G 221G 50% /
tmpfs 1.9G 0 1.9G 0% /dev/shm
/dev/sda1 99M 82M 13M 87% /boot

解决方法：删除旧版的kernel

1. 查看当前使用的kernel

uname -r

2.6.32-431.1.2.0.1.el6.x86_64

2. 查看系统已安装的kernel:

rpm -qa | grep kernel

kernel-2.6.32-358.el6.x86_64
abrt-addon-kerneloops-2.0.8-21.el6.centos.x86_64
kernel-devel-2.6.32-358.6.1.el6.x86_64
libreport-plugin-kerneloops-2.0.9-19.el6.centos.x86_64
kernel-2.6.32-358.6.1.el6.x86_64
kernel-devel-2.6.32-431.1.2.0.1.el6.x86_64
dracut-kernel-004-336.el6_5.2.noarch
kernel-firmware-2.6.32-431.1.2.0.1.el6.noarch
kernel-headers-2.6.32-431.1.2.0.1.el6.x86_64
kernel-2.6.32-431.1.2.0.1.el6.x86_64

删除旧kernel:

yum remove kernel-2.6.32-358.el6.x86_64 kernel-2.6.32-358.6.1.el6.x86_64 kernel-devel-2.6.32-358.6.1.el6.x86_64

再查看/boot 空间：

df -h | grep boot

/dev/sda1 99M 30M 65M 32% /boot