Centos7 upgrade kernel version to 5.4
The default kernel version of Centos7.x system is 3.10. If you run docker or k8s, there will be bugs. It is best to upgrade the kernel version.
rpm -Uvh https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm
yum --enablerepo=elrepo-kernel -y install kernel-lt-5.4.242-1.el7.elrepo.x86_64
grub2-set-default 'CentOS Linux (5.4.242-1.el7.elrepo.x86_64) 7 (Core)'
After the setup is complete, just reboot.
uname -r view
