Shulou(Shulou.com)06/02 Report--

Upgrade process:

Original system: CentOS7.3

[root@my-e450] # uname-r3.10.0-514.el7.x86_64

Install the required software packages:

# yum update# yum install-y ncurses-devel make gcc bc bison flex elfutils-libelf-devel openssl-devel grub2

Download the kernel from https://www.kernel.org/

The kernel version I downloaded here is 5.0.21.

Link: https://pan.baidu.com/s/1W1Bc6GYuwgzNG0uW6i2__w

Extraction code: nqhj

Copy or upload the u disk to the server and extract it to the / usr/src/kernels folder

Tar-xvf linux-5.0.21.tar.gz-C / usr/src/kernels/cd / usr/src/kernels/linux-5.0.21

Copy the original configuration:

Cp-v cp / boot/config-3.10.0-514.el7.x86_64 / usr/src/kernels/linux-5.0.21/.config

Configure the kernel:

Make menuconfig

You can customize the kernel features here. If you are not familiar with the kernel, simply use the tab key to select save to save, and then exit.

Then, df-h checks the free space on the hard disk to make sure there is still space left for 16GB, and the compilation process uses a lot of space.

Well, it's compiling now!

[root@my-e450 linux-5.0.21] # nproc

two

Nproc check the number of cpu cores

Make-j 2 & & make modules_install-j 2 & & make install-j 2

Here, if not more than 4 cores,-j followed by the number of cpu cores; if more than 4 cores, it is recommended to use-j 4, um, steady

Let's go to read a book. It will take more than an hour.

Continue to execute after compilation:

# grub2-set-default "CentOS Linux (5.0.21) 7 (Cores)" # grub2-editenv list#grub2-mkconfig-o / boot/grub2/grub.cfg

Restart the system

# reboot

After reboot, you will automatically select the new kernel that has just been compiled and enter your user name and password to log in to the system.

[root@my-e450 ~] # uname-srLinux 5.0.21

Kernel upgrade succeeded ~

Summary

The above is the CentOS7 upgrade kernel kernel5.0 version introduced by the editor. I hope it will be helpful to you. If you have any questions, please leave me a message and the editor will reply to you in time. Thank you very much for your support to the website!

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