CentOS内核升级

短命女 2024-03-27 10:09 94阅读 0赞

[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)"