[root@Master1 ~]# rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
[root@Master1 ~]# yum install -y https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm
已加载插件：fastestmirror
elrepo-release-7.el7.elrepo.noarch.rpm | 8.6 kB 00:00:00
正在检查 /var/tmp/yum-root-R2Kbc8/elrepo-release-7.el7.elrepo.noarch.rpm: elrepo-release-7.0-5.el7.elrepo.noarch
/var/tmp/yum-root-R2Kbc8/elrepo-release-7.el7.elrepo.noarch.rpm 将被安装
正在解决依赖关系
--> 正在检查事务
---> 软件包 elrepo-release.noarch.0.7.0-5.el7.elrepo 将被 安装
--> 解决依赖关系完成
依赖关系解决
================================================================================================================================
Package 架构 版本 源 大小
================================================================================================================================
正在安装:
elrepo-release noarch 7.0-5.el7.elrepo /elrepo-release-7.el7.elrepo.noarch 5.0 k
事务概要
================================================================================================================================
安装 1 软件包
总计：5.0 k
安装大小：5.0 k
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
正在安装 : elrepo-release-7.0-5.el7.elrepo.noarch 1/1
验证中 : elrepo-release-7.0-5.el7.elrepo.noarch 1/1
已安装:
elrepo-release.noarch 0:7.0-5.el7.elrepo
完毕！
[root@Master1 ~]# yum list available --disablerepo=* --enablerepo=elrepo-kernel
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* elrepo-kernel: mirrors.tuna.tsinghua.edu.cn
elrepo-kernel | 3.0 kB 00:00:00
elrepo-kernel/primary_db | 2.0 MB 00:00:00
可安装的软件包
kernel-lt.x86_64 5.4.142-1.el7.elrepo elrepo-kernel
kernel-lt-devel.x86_64 5.4.142-1.el7.elrepo elrepo-kernel
kernel-lt-doc.noarch 5.4.142-1.el7.elrepo elrepo-kernel
kernel-lt-headers.x86_64 5.4.142-1.el7.elrepo elrepo-kernel
kernel-lt-tools.x86_64 5.4.142-1.el7.elrepo elrepo-kernel
kernel-lt-tools-libs.x86_64 5.4.142-1.el7.elrepo elrepo-kernel
kernel-lt-tools-libs-devel.x86_64 5.4.142-1.el7.elrepo elrepo-kernel
kernel-ml.x86_64 5.13.12-1.el7.elrepo elrepo-kernel
kernel-ml-devel.x86_64 5.13.12-1.el7.elrepo elrepo-kernel
kernel-ml-doc.noarch 5.13.12-1.el7.elrepo elrepo-kernel
kernel-ml-headers.x86_64 5.13.12-1.el7.elrepo elrepo-kernel
kernel-ml-tools.x86_64 5.13.12-1.el7.elrepo elrepo-kernel
kernel-ml-tools-libs.x86_64 5.13.12-1.el7.elrepo elrepo-kernel
kernel-ml-tools-libs-devel.x86_64 5.13.12-1.el7.elrepo elrepo-kernel
perf.x86_64 5.13.12-1.el7.elrepo elrepo-kernel
python-perf.x86_64 5.13.12-1.el7.elrepo elrepo-kernel
[root@Master1 ~]# cat /boot/grub2/grub.cfg | grep menuentry
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
menuentry_id_option=""
export menuentry_id_option
menuentry 'CentOS Linux (3.10.0-1160.36.2.el7.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-1160.el7.x86_64-advanced-2cb24f10-dfb6-4251-8936-377c66e627c0' {
menuentry 'CentOS Linux (3.10.0-1160.el7.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-1160.el7.x86_64-advanced-2cb24f10-dfb6-4251-8936-377c66e627c0' {
menuentry 'CentOS Linux (0-rescue-e759430c2ff54581b2b72d53bbf4ae74) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-0-rescue-e759430c2ff54581b2b72d53bbf4ae74-advanced-2cb24f10-dfb6-4251-8936-377c66e627c0' {
[root@Master1 ~]#
[root@Master1 ~]# yum install -y kernel-lt.x86_64 --enablerepo=elrepo-kernel
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.bupt.edu.cn
* elrepo: mirrors.tuna.tsinghua.edu.cn
* elrepo-kernel: mirrors.tuna.tsinghua.edu.cn
* epel: mirrors.tuna.tsinghua.edu.cn
* extras: mirrors.aliyun.com
* updates: mirrors.bupt.edu.cn
elrepo | 3.0 kB 00:00:00
elrepo/primary_db | 395 kB 00:00:00
正在解决依赖关系
--> 正在检查事务
---> 软件包 kernel-lt.x86_64.0.5.4.142-1.el7.elrepo 将被 安装
--> 解决依赖关系完成
依赖关系解决
================================================================================================================================
Package 架构 版本 源 大小
================================================================================================================================
正在安装:
kernel-lt x86_64 5.4.142-1.el7.elrepo elrepo-kernel 50 M
事务概要
================================================================================================================================
安装 1 软件包
总下载量：50 M
安装大小：227 M
Downloading packages:
kernel-lt-5.4.142-1.el7.elrepo.x86_64.rpm | 50 MB 00:00:02
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
正在安装 : kernel-lt-5.4.142-1.el7.elrepo.x86_64 1/1
验证中 : kernel-lt-5.4.142-1.el7.elrepo.x86_64 1/1
已安装:
kernel-lt.x86_64 0:5.4.142-1.el7.elrepo
完毕！
[root@Master1 ~]#cat /boot/grub2/grub.cfg | grep menuentry ## 查看系统可用内核
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
menuentry_id_option=""
export menuentry_id_option
menuentry 'CentOS Linux (5.4.142-1.el7.elrepo.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-1160.el7.x86_64-advanced-2cb24f10-dfb6-4251-8936-377c66e627c0' {
menuentry 'CentOS Linux (3.10.0-1160.36.2.el7.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-1160.el7.x86_64-advanced-2cb24f10-dfb6-4251-8936-377c66e627c0' {
menuentry 'CentOS Linux (3.10.0-1160.el7.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-1160.el7.x86_64-advanced-2cb24f10-dfb6-4251-8936-377c66e627c0' {
menuentry 'CentOS Linux (0-rescue-e759430c2ff54581b2b72d53bbf4ae74) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-0-rescue-e759430c2ff54581b2b72d53bbf4ae74-advanced-2cb24f10-dfb6-4251-8936-377c66e627c0' {
[root@Master1 ~]# grub2-set-default "CentOS Linux (5.4.142-1.el7.elrepo.x86_64) 7 (Core)"
# 设置开机从新内核启动
[root@Master1 ~]# grub2-editenv list #查看内核启动项
saved_entry=CentOS Linux (5.4.142-1.el7.elrepo.x86_64) 7 (Core)
[root@Master1 ~]# uname -r #查看当前内核版本
3.10.0-1160.36.2.el7.x86_64
[root@Master1 ~]# reboot
[root@Master1 ~]# uname -r #启动完成查看内核版本是否更新：
grub2-set-default "CentOS Linux (3.10.0-1160.36.2.el7.x86_64) 7 (Core)"版权声明：本文内容由互联网用户自发贡献，该文观点仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 举报，一经查实，本站将立刻删除。
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