Ubuntu删除多余的内核

  第一步:查看当前的内核

root@linux:~# uname -a
Linux linux 4.15.0-96-generic #97-Ubuntu SMP Wed Apr 1 03:25:46 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

第二步:查看当前系统中所有内核

root@linux:~# dpkg --get-selections |grep linux
console-setup-linux                install
libselinux1:amd64                install
linux-base                    install
linux-firmware                    install
linux-generic                    install
linux-headers-4.15.0-72                install
linux-headers-4.15.0-72-generic            install
linux-headers-4.15.0-91                install
linux-headers-4.15.0-91-generic            install
linux-headers-4.15.0-96                install
linux-headers-4.15.0-96-generic            install
linux-headers-4.15.0-97                install
linux-headers-4.15.0-97-generic            install
linux-headers-generic                install
linux-image-4.15.0-54-generic            deinstall
linux-image-4.15.0-55-generic            deinstall
linux-image-4.15.0-58-generic            deinstall
linux-image-4.15.0-60-generic            deinstall
linux-image-4.15.0-62-generic            deinstall
linux-image-4.15.0-64-generic            deinstall
linux-image-4.15.0-65-generic            deinstall
linux-image-4.15.0-66-generic            deinstall
linux-image-4.15.0-70-generic            deinstall
linux-image-4.15.0-72-generic            install
linux-image-4.15.0-74-generic            deinstall
linux-image-4.15.0-76-generic            deinstall
linux-image-4.15.0-88-generic            deinstall
linux-image-4.15.0-91-generic            install
linux-image-4.15.0-96-generic            install
linux-image-4.15.0-97-generic            install
linux-image-generic                install
linux-modules-4.15.0-54-generic            deinstall
linux-modules-4.15.0-55-generic            deinstall
linux-modules-4.15.0-58-generic            deinstall
linux-modules-4.15.0-60-generic            deinstall
linux-modules-4.15.0-62-generic            deinstall
linux-modules-4.15.0-64-generic            deinstall
linux-modules-4.15.0-65-generic            deinstall
linux-modules-4.15.0-66-generic            deinstall
linux-modules-4.15.0-70-generic            deinstall
linux-modules-4.15.0-72-generic            install
linux-modules-4.15.0-74-generic            deinstall
linux-modules-4.15.0-76-generic            deinstall
linux-modules-4.15.0-88-generic            deinstall
linux-modules-4.15.0-91-generic            install
linux-modules-4.15.0-96-generic            install
linux-modules-4.15.0-97-generic            install
linux-modules-extra-4.15.0-54-generic        deinstall
linux-modules-extra-4.15.0-55-generic        deinstall
linux-modules-extra-4.15.0-58-generic        deinstall
linux-modules-extra-4.15.0-60-generic        deinstall
linux-modules-extra-4.15.0-62-generic        deinstall
linux-modules-extra-4.15.0-64-generic        deinstall
linux-modules-extra-4.15.0-65-generic        deinstall
linux-modules-extra-4.15.0-66-generic        deinstall
linux-modules-extra-4.15.0-70-generic        deinstall
linux-modules-extra-4.15.0-72-generic        install
linux-modules-extra-4.15.0-74-generic        deinstall
linux-modules-extra-4.15.0-76-generic        deinstall
linux-modules-extra-4.15.0-88-generic        deinstall
linux-modules-extra-4.15.0-91-generic        install
linux-modules-extra-4.15.0-96-generic        install
linux-modules-extra-4.15.0-97-generic        install
selinux-utils                                install
util-linux                                   install

第三步:移除多余的内核

对于当前没有用的内核都是多余的,进行删除

root@linux:~# sudo apt-get remove linux-headers-4.15.0-70 linux-headers-4.15.0-70-generic linux-image-4.15.0-70-generic linux-modules-4.15.0-70-generic linux-modules-extra-4.15.0-70-generic

这样删除后会还会在列表中显示存在,不过是状态显示为已经卸载,如果想不显示彻底清除的话:

root@linux:~# sudo apt-get purge linux-headers-4.15.0-74 linux-headers-4.15.0-74-generic linux-image-4.15.0-74-generic linux-modules-4.15.0-74-generic linux-modules-extra-4.15.0-74-generic

卸载后进行检查:

root@linux:~# dpkg --get-selections |grep linux
console-setup-linux                install
libselinux1:amd64                install
linux-base                    install
linux-firmware                    install
linux-headers-4.15.0-96                install
linux-headers-4.15.0-96-generic            install
linux-image-4.15.0-54-generic            deinstall
linux-image-4.15.0-55-generic            deinstall
linux-image-4.15.0-58-generic            deinstall
linux-image-4.15.0-60-generic            deinstall
linux-image-4.15.0-62-generic            deinstall
linux-image-4.15.0-64-generic            deinstall
linux-image-4.15.0-65-generic            deinstall
linux-image-4.15.0-66-generic            deinstall
linux-image-4.15.0-70-generic            deinstall
linux-image-4.15.0-72-generic            deinstall
linux-image-4.15.0-74-generic            deinstall
linux-image-4.15.0-76-generic            deinstall
linux-image-4.15.0-88-generic            deinstall
linux-image-4.15.0-91-generic            deinstall
linux-image-4.15.0-96-generic            install
linux-image-4.15.0-97-generic            deinstall
linux-modules-4.15.0-54-generic            deinstall
linux-modules-4.15.0-55-generic            deinstall
linux-modules-4.15.0-58-generic            deinstall
linux-modules-4.15.0-60-generic            deinstall
linux-modules-4.15.0-62-generic            deinstall
linux-modules-4.15.0-64-generic            deinstall
linux-modules-4.15.0-65-generic            deinstall
linux-modules-4.15.0-66-generic            deinstall
linux-modules-4.15.0-70-generic            deinstall
linux-modules-4.15.0-72-generic            deinstall
linux-modules-4.15.0-74-generic            deinstall
linux-modules-4.15.0-76-generic            deinstall
linux-modules-4.15.0-88-generic            deinstall
linux-modules-4.15.0-91-generic            deinstall
linux-modules-4.15.0-96-generic            install
linux-modules-4.15.0-97-generic            deinstall
linux-modules-extra-4.15.0-54-generic        deinstall
linux-modules-extra-4.15.0-55-generic        deinstall
linux-modules-extra-4.15.0-58-generic        deinstall
linux-modules-extra-4.15.0-60-generic        deinstall
linux-modules-extra-4.15.0-62-generic        deinstall
linux-modules-extra-4.15.0-64-generic        deinstall
linux-modules-extra-4.15.0-65-generic        deinstall
linux-modules-extra-4.15.0-66-generic        deinstall
linux-modules-extra-4.15.0-70-generic        deinstall
linux-modules-extra-4.15.0-72-generic        deinstall
linux-modules-extra-4.15.0-74-generic        deinstall
linux-modules-extra-4.15.0-76-generic        deinstall
linux-modules-extra-4.15.0-88-generic        deinstall
linux-modules-extra-4.15.0-91-generic        deinstall
linux-modules-extra-4.15.0-96-generic        install
linux-modules-extra-4.15.0-97-generic        deinstall
selinux-utils                           install
util-linux                             install

状态为deinstall即为已经卸载

第四步:更新系统引导

删除内核后需要更新grup移除失效的启动项

root@linux:~# sudo update-grub  #根据情况选择grub/grub2

======================================================

为什么要删除多余的内核,ubuntu默认自动更新内核,多余生产环境来说存在不稳定因素,有时候重启后进入不到系统提示:not syncing : VFS: Unable to mount root

解决办法就是开机的时候选择高级模式,选择之前的低版本的内核,试试那个可以进入到系统中。然后把那个高版本的内核删除掉,就能解决这个问题。

删除内核后虽然可以正常就如到系统中,但是系统默认自动更新内核的,为了避免这个情况,我们要关闭内核自动更新,

关闭内核的教程:https://www.cnblogs.com/yangzhaon/p/12911751.html

posted @ 2020-05-18 17:43  阳光与叶子  阅读(2309)  评论(0编辑  收藏  举报