CentOS升级内核

系统

CentOS 7.9

升级内核

• 安装ELRepo源

rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
yum -y install https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm

• 升级内核

yum -y install yum-utils
yum-config-manager --enable elrepo-kernel
yum --disablerepo="*" --enablerepo="elrepo-kernel" list available
yum -y install kernel-lt

• 配置GRUB

awk -F\' '$1=="menuentry " {print i++ " : " $2}' /etc/grub2.cfg
grub2-set-default 0

• 重启生效

reboot

验证

uname -a