CentOS 6.5 upgrade Kernel Linux 3.12.17

Environment:

System hardware: VMware vsphere (cpu:2*4 core, memory 2G)

System version: Linux CentOS 2.6.32-431.el6.x86_64 (Centos-6.5-x86_64-minimal.iso)

Upgrade kernel version: longterm:3.12.17

Upgrade steps:

1. Virtual system Installation

Requires mininal mode installation (205 packages), the specific steps omitted.

　　

2. View the original system kernel version, upgrade the update package

2.1 Update Package

[[email protected] ~]# Yum update

[email protected] ~]# Yum upgrade

2.2 Viewing the System kernel version

[Email protected] ~]# uname-a

Linux CentOS 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 03:15:09 UTC x86_64 x86_64 x86_64 gnu/linux

[Email protected] ~]# cat/etc/redhat-release
CentOS Release 6.5 (Final)

3. Download and install the toolkit needed to compile the environment

[email protected] ~]# Yum install vim wget
[email protected] ~]# Yum install gcc gcc-c++ XZ
[email protected] ~]# Yum install BC
[email protected] ~]# Yum install Ncurses-devel
[email protected] ~]# Yum install hmaccalc zlib-devel binutils-devel elfutils-libelf-devel

[[email protected] ~]# Yum install Qt-devel #如果有X环境时安装 (not currently installed)

4. Download the kernel pack

4.1 Making a Directory
[Email protected] ~]# cd/usr/local/src/

4.2 Download the kernel package, currently the 3.12.17 version.
[Email protected] ~]# wget HTTPS://WWW.KERNEL.ORG/PUB/LINUX/KERNEL/V3.X/LINUX-3.12.17.TAR.XZ

　　
5. Compiling the kernel

5.1 Unpacking, the kernel source directory
[Email protected] ~]# TAR-VXF LINUX-3.12.17.TAR.XZ
[Email protected] ~]# CD linux-3.12.17

/usr/local/src/linux-3.12.17 This directory when compiling the directory, the compilation process, the operation must be in this directory

5.2 Select the module to compile the kernel in the menu mode
[email protected] ~]# make Menuconfig

After opening the menu, save the <save> by default; and Exit <Exit>

After saving, the current directory will automatically generate the. config file

5.3 Viewing the current version and compiling it with the original compilation configuration

[Email Protected]tos ~]# uname-r
2.6.32-431.el6.x86_64

5.4 Copy the original configuration file to the compiled directory (as needed, the old mate file as a new mate template)

[Email protected] ~]# cp/boot/config-2.6.32-431.11.2.el6.x86_64. config

Tip Whether to overwrite, enter Y
[[email protected] ~]# sudo sh-c ' yes ' | Make Oldconfig '

Generate a new profile with the original configuration file, the default answer is Yes

　　

5.5 Compiling the kernel (takes about 30-40 minutes)
[[email protected] ~]# make

　　

5.6 Installing the Kernel

[[email protected] ~]# make Modules_install Install

When finished, you will be prompted could not find module Vmware_balloon, which is related to the virtual machine (ignore it)

6. Change the kernel used when the system starts
[Email protected] ~]# Vim/boot/grub/menu.lst

Modify the default=0, boot, the default starts with the first (3.12.17 kernel)

Save exit

7. Rebooting the system
[Email protected] ~]# Shutdown-r now

　

8. Confirm the current kernel version
[Email protected] ~]# uname-r

Linux CentOS 3.12.17 #1 SMP Fri Apr 03:32:42 CST x86_64 x86_64 x86_64 gnu/linux

The display kernel is 3.12.17, which means the upgrade kernel is successful

9. If the compilation fails, you can clear and recompile
[Email protected] ~]# cd/usr/local/src/linux-3.12.17
[[email protected] ~]# make Mrproper #完成或者安装过程出错 to clean up the last compiled site
[[email protected] ~]# make clean

10. If the upgrade is successful, you can delete the source directory
[Email protected] ~]# rm-rf/usr/local/src/linux-3.12.17

11. Delete the original kernel

11.1 See what kernel version is currently available

[Email protected] ~]# rpm-q kernel

Show the following versions

Kernel-2.6.32-431.el6.x86_64
Kernel-2.6.32-431.11.2.el6.x86_64

11.2 Deleting the original kernel

[[email protected] ~]# Yum remove kernel-2.6.32-431.el6.x86_64 #移除此版本的内核, and the boot menu will no longer appear in this kernel
[email protected] ~]# Yum Remove kernel-2.6.32-431.11.2.el6.x86_64

After deleting, viewing the boot menu will find that the kernel is missing

[Email protected] ~]# Cat/boot/grub/menu.lst

CentOS 6.5 upgrade Kernel Linux 3.12.17