Centos/linux Upgrading the Kernel

Generally speaking, the higher the system version, the more new the support. Unless you have special requirements for the software, you will want to make sure that your kernel version is up-to-date. As a Linux system administrator, upgrading the kernel is also a basic skill. Here is a description of the kernel upgrade method:

System Environment: CentOS 6.5

1: View the system version
# Uname-r
2.6.32-431.el6.x86_64

2: Update kernel
# yum-y Install kernel

3: Restart the system
# reboot

4: See if the new kernel is enabled
# Uname-r
2.6.32-504.8.1.el6.x86_64

5: Can delete old kernel save space
# Rpm-q Kernel
Kernel-2.6.32-431.el6.x86_64
Kernel-2.6.32-504.8.1.el6.x86_64

# RPM-E Kernel-2.6.32-431.el6.x86_64

Centos/linux Upgrading the Kernel