How to upgrade or update kernel of the CentOS to Latest stable Kernel

The kernel is the core of the operating system, and runs the CPU, manages system memory, controls access to disk drives, and contains device drivers that enable you to interact with the system and use the hardware and peripherals attached to the  computer.Naturally, kernel update  appeals most system administrators who are responsible for wringing the most performance and benefit out of their existing hardware and software. In some cases, rebuilding the kernel(kernel upgrade or kernel update) is required in order to support new hardware that is not supported, or that is poorly supported, by your system’s existing kernel.

Check the current kernel of the system by using uname –r option.

[[email protected] ~]# uname -r
3.10.0-327.el7.x86_64

After you have determined the version of the kernel you are currently running, the next step is to obtain the latest version of the kernel source code.

Download latest stable kernel from www.kernel.org.Now the latest stable kernel is 4.5.3

At any given time, there are almost always two versions of the Linux kernel available, the stable and the unstable or development version. You can differentiate between the versions by looking at the kernel version numbers. The kernel version numbering system is easy to understand. Kernel versions are numbered using the format major.minor.patch, where major is the major version number, minor is the minor version number, and patch is the patch level. The major version number, currently 4, changes very infrequently and represents substantial or fundamental changes between kernel releases. The minor version number, 5 in the examples shown in the previous section, changes much more often as new features are added to the kernel, such as new file systems, as major subsystems undergo significant remodeling, as significant bugs are fixed, or as security patches are incorporated into the source code.

Update kernel of the CentOS to Latest stable Kernel

Download latest stable kernel 4.5.3 from www.kernel.org.

kernel stable version

Then extract the kernel source by using tar –jxvf and copy to /usr/src as follows

[[email protected] ~]#tar -Jxvf  linux-4.5.3.tar.xz
[[email protected] ~]#cp -rf linux-4.5.3 /usr/src
[[email protected] src]# ls
debug  kernels  linux-4.5.3  

Then change the directory to linux-4.5.3 by using cd command as follows

[[email protected] src]# cd linux-4.5.3  

Then run the command make mrproper

[[email protected] linux-4.5.3  ]# make mrproper

Now install the packages nucrses and nucrses-devel by using yum as follows

[[email protected] linux-4.5.3  ]# yum install ncurses nucrses-devel

Then run the command make menuconfig

[[email protected] linux-4.5.3  ]# make menuconfig

 

make menuconfig

Networking Support

networking support

File systems

filesystem support

Firmware Drivers

firmware drivers

save the configuration exit from it.

config save1

config save 2

Now install the package openssl-devel package by using yum

[[email protected] linux-4.5.3  ]# yum install openssl-devel

Then run the command make it takes a moment please be patient and wait.

[[email protected] linux-4.5.3  ]# make

The sample ouput is like

 

Screenshot from 2016-05-09 03-49-41

Screenshot from 2016-05-09 03-48-33

Screenshot from 2016-05-09 03-56-36

Then run the command make modules

[[email protected] linux-4.5.3]# make modules
  CHK     include/config/kernel.release
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
  CHK     include/generated/bounds.h
  CHK     include/generated/timeconst.h
  CHK     include/generated/asm-offsets.h
  CALL    scripts/checksyscalls.sh
  Building modules, stage 2.
  MODPOST 2175 modules

now install modules by using the command make modules_install.

[[email protected] linux-4.5.3]# make modules_install

The sample ouput is like follows

  INSTALL /lib/firmware/radeon/RV620_me.bin
  INSTALL /lib/firmware/radeon/RV635_pfp.bin
  INSTALL /lib/firmware/radeon/RV635_me.bin
  INSTALL /lib/firmware/radeon/RV670_pfp.bin
  INSTALL /lib/firmware/radeon/RV710_me.bin
  INSTALL /lib/firmware/av7110/bootcode.bin
  INSTALL /lib/firmware/ttusb-budget/dspbootcode.bin
  INSTALL /lib/firmware/korg/k1212.dsp
  INSTALL /lib/firmware/ess/maestro3_assp_kernel.fw
  INSTALL /lib/firmware/ess/maestro3_assp_minisrc.fw
  INSTALL /lib/firmware/tigon/tg3.bin
  INSTALL /lib/firmware/tigon/tg3_tso.bin
  INSTALL /lib/firmware/tigon/tg3_tso5.bin
  INSTALL /lib/firmware/emi26/loader.fw
  INSTALL /lib/firmware/emi26/firmware.fw
  INSTALL /lib/firmware/emi26/bitstream.fw
  INSTALL /lib/firmware/mts_edge.fw
  INSTALL /lib/firmware/edgeport/boot.fw
  INSTALL /lib/firmware/edgeport/boot2.fw
  INSTALL /lib/firmware/edgeport/down.fw
  INSTALL /lib/firmware/edgeport/down2.fw
  INSTALL /lib/firmware/edgeport/down3.bin
  INSTALL /lib/firmware/whiteheat_loader.fw
  INSTALL /lib/firmware/whiteheat.fw
  INSTALL /lib/firmware/keyspan_pda/keyspan_pda.fw
  INSTALL /lib/firmware/keyspan_pda/xircom_pgs.fw
  DEPMOD  4.5.3
[[email protected] linux-4.5.3]#

Now run the command make install

[[email protected] linux-4.5.3]# make install
sh ./arch/x86/boot/install.sh 4.5.3 arch/x86/boot/bzImage \
        System.map "/boot"
[[email protected] linux-4.5.3]#

and Then reboot the system

[[email protected] linux-4.5.3]#  reboot
[[email protected] linux-4.5.3]# 

The GRUB screen as like

grubscreenupdate

 

Now enjoy the new  kernel version 4.5.3

LEAVE A REPLY

Please enter your comment!
Please enter your name here