1、安裝公鑰
sudo rpm --import /tupian/20230521/RPM-GPG-KEY-elrepo.org
2、下載內(nèi)核
sudo rpm -Uvh /tupian/20230521/elrepo-release-7.0-2.el7.elrepo.noarch.rpm
3、查看內(nèi)核版本
sudo yum -y --disablerepo="*" --enablerepo="elrepo-kernel" list available
4、安裝最新版本
sudo yum -y --enablerepo=elrepo-kernel install kernel-ml
或yum --enablerepo=elrepo-kernel install kernel-lt
5、查看機(jī)器上所有能用內(nèi)核
sudo awk -F\' '$1=="menuentry " {print i++ " : " $2}' /etc/grub2.cfg
6、編輯配置文件
sudo vi /etc/default/grub
GRUB_TIMEOUT=5
GRUB_DEFAULT=0
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/root rd.lvm.lv=centos/swap crashkernel=auto rhgb quiet"
GRUB_DISABLE_RECOVERY="true"
7、寫到grub2的啟動(dòng)配置文件
sudo grub2-mkconfig -o /boot/grub2/grub.cfg
8、重啟
sudo reboot
9、查看系統(tǒng)中全部的內(nèi)核:
rpm -qa | grep kernel
yum remove 包名
sudo cat < kernel.sh
#!/bin/bash
sudo rpm --import /tupian/20230521/RPM-GPG-KEY-elrepo.org
sudo rpm -Uvh /tupian/20230521/elrepo-release-7.0-2.el7.elrepo.noarch.rpm
sudo yum -y --enablerepo=elrepo-kernel install kernel-ml
sudo sed -i "s/saved/0/" /etc/default/grub
sudo grub2-mkconfig -o /boot/grub2/grub.cfg
sudo reboot
EOE