Centos 7.9手动升级内核版本

Get started

Import the public key:
 

rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

Detailed info on the GPG key used by the ELRepo Project can be found on the key page.
If you have a system with Secure Boot enabled, please see the SecureBootKey page for more information.

To install ELRepo for RHEL-8 or CentOS-8:
 

yum install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm

To install ELRepo for RHEL-7, SL-7 or CentOS-7:
 

yum install https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm

yum --enablerepo=elrepo-kernel install kernel-ml -y&&
sed -i s/saved/0/g /etc/default/grub&&
grub2-mkconfig -o /boot/grub2/grub.cfg && reboot