Centos7升级内核
kernel包下载
https://elrepo.org/linux/kernel/el7/x86_64/RPMS/
参考博客
https://blog.csdn.net/u010766726/article/details/108484746
1 [root@yt-compute-r56-25 ~]# rpm -qa |grep kernel 2 kernel-devel-3.10.0-1160.el7.x86_64 3 kernel-tools-3.10.0-1160.el7.x86_64 4 kernel-tools-libs-3.10.0-1160.el7.x86_64 5 kernel-headers-4.18.0-193.el8.x86_64 6 kernel-3.10.0-1160.el7.x86_64 7 [root@yt-compute-r56-25 ~]# for i in `rpm -qa|grep kernel`;do rpm -e "${i}" --nodeps;done 8 warning: file /lib/modules/3.10.0-1160.el7.x86_64/updates: remove failed: No such file or directory 9 [root@yt-compute-r56-25 ~]# rpm -qa |grep kernel 10 [root@yt-compute-r56-25 ~]# rpm -qa |grep kernel 11 [root@yt-compute-r56-25 ~]# 12 [root@yt-compute-r56-25 ~]# ll 13 total 5469272 14 -rw-------. 1 root root 1837 Jun 30 17:15 anaconda-ks.cfg 15 -rw-r--r-- 1 root root 8912 Jul 10 19:13 elrepo-release-7.el7.elrepo.noarch.rpm 16 -rw------- 1 root root 5382917120 Jul 2 10:24 gpu_centos7_cuda11_v11.tar 17 -rw-r--r-- 1 root root 18787608 Jul 2 10:04 kernel-devel-3.10.0-1160.el7.x86_64.rpm 18 -rw-r--r-- 1 root root 61101152 Jul 23 20:11 kernel-ml-5.18.14-1.el7.elrepo.x86_64.rpm 19 -rw-r--r-- 1 root root 14789108 Jul 23 20:11 kernel-ml-devel-5.18.14-1.el7.elrepo.x86_64.rpm 20 -rw-r--r-- 1 root root 1644584 Jul 23 20:11 kernel-ml-headers-5.18.14-1.el7.elrepo.x86_64.rpm 21 -rw-r--r-- 1 root root 275160 Jul 23 20:11 kernel-ml-tools-5.18.14-1.el7.elrepo.x86_64.rpm 22 -rw-r--r-- 1 root root 156980 Jul 23 20:11 kernel-ml-tools-libs-5.18.14-1.el7.elrepo.x86_64.rpm 23 -rw-r--r-- 1 root root 132980 Jul 23 20:11 kernel-ml-tools-libs-devel-5.18.14-1.el7.elrepo.x86_64.rpm 24 -rw-r--r-- 1 root root 120688920 Sep 22 2021 linux-5.14.7.tar.xz 25 drwxr-xr-x 11 root root 201 Jul 2 10:09 NVIDIA_CUDA-11.4_Samples 26 -rw-r--r-- 1 root root 1722 Mar 28 2009 RPM-GPG-KEY-elrepo.org 27 [root@yt-compute-r56-25 ~]# rpm -vih kernel-ml-5.18.14-1.el7.elrepo.x86_64.rpm 28 Preparing... ################################# [100%] 29 Updating / installing... 30 1:kernel-ml-5.18.14-1.el7.elrepo ################################# [100%] 31 dkms: running auto installation service for kernel 5.18.14-1.el7.elrepo.x86_64 32 Done. 33 [root@yt-compute-r56-25 ~]# rpm -ivh kernel-ml-devel-5.18.14-1.el7.elrepo.x86_64.rpm 34 Preparing... ################################# [100%] 35 Updating / installing... 36 1:kernel-ml-devel-5.18.14-1.el7.elr################################# [100%] 37 [root@yt-compute-r56-25 ~]# rpm -ivh kernel-ml-headers-5.18.14-1.el7.elrepo.x86_64.rpm 38 Preparing... ################################# [100%] 39 Updating / installing... 40 1:kernel-ml-headers-5.18.14-1.el7.e################################# [100%] 41 [root@yt-compute-r56-25 ~]# rpm -ivh kernel-ml-tools- 42 kernel-ml-tools-5.18.14-1.el7.elrepo.x86_64.rpm kernel-ml-tools-libs-5.18.14-1.el7.elrepo.x86_64.rpm kernel-ml-tools-libs-devel-5.18.14-1.el7.elrepo.x86_64.rpm 43 44 [root@yt-compute-r56-25 ~]# rpm -qa |grep kernel 45 kernel-ml-headers-5.18.14-1.el7.elrepo.x86_64 46 kernel-ml-devel-5.18.14-1.el7.elrepo.x86_64 47 kernel-ml-5.18.14-1.el7.elrepo.x86_64 48 [root@yt-compute-r56-25 ~]# rpm -ivh kernel-ml-tools-* 49 Preparing... ################################# [100%] 50 Updating / installing... 51 1:kernel-ml-tools-libs-5.18.14-1.el################################# [ 33%] 52 2:kernel-ml-tools-5.18.14-1.el7.elr################################# [ 67%] 53 3:kernel-ml-tools-libs-devel-5.18.1################################# [100%] 54 [root@yt-compute-r56-25 ~]# rpm -qa |grep kernel 55 kernel-ml-headers-5.18.14-1.el7.elrepo.x86_64 56 kernel-ml-devel-5.18.14-1.el7.elrepo.x86_64 57 kernel-ml-tools-libs-5.18.14-1.el7.elrepo.x86_64 58 kernel-ml-tools-libs-devel-5.18.14-1.el7.elrepo.x86_64 59 kernel-ml-5.18.14-1.el7.elrepo.x86_64 60 kernel-ml-tools-5.18.14-1.el7.elrepo.x86_64 61 [root@yt-compute-r56-25 ~]# vim /etc/default/ 62 grub nss useradd 63 [root@yt-compute-r56-25 ~]# vim /etc/default/grub 64 [root@yt-compute-r56-25 ~]# vim /etc/default/grub 65 [root@yt-compute-r56-25 ~]# 66 [root@yt-compute-r56-25 ~]# grub2-mkconfig -o /boot/grub2/grub.cfg 67 Generating grub configuration file ... 68 Found linux image: /boot/vmlinuz-5.18.14-1.el7.elrepo.x86_64 69 Found initrd image: /boot/initramfs-5.18.14-1.el7.elrepo.x86_64.img 70 Found linux image: /boot/vmlinuz-4.1.35 71 Found initrd image: /boot/initramfs-4.1.35.img 72 Found linux image: /boot/vmlinuz-4.1.35.old 73 Found initrd image: /boot/initramfs-4.1.35.img 74 Found linux image: /boot/vmlinuz-0-rescue-3214a594cd464aa4b9cb04679cf10aac 75 Found initrd image: /boot/initramfs-0-rescue-3214a594cd464aa4b9cb04679cf10aac.img 76 done 77 [root@yt-compute-r56-25 ~]# 78 [root@yt-compute-r56-25 ~]# awk -F\' '$1=="menuentry " {print $2}' /etc/grub2.cfg 79 CentOS Linux (5.18.14-1.el7.elrepo.x86_64) 7 (Core) 80 CentOS Linux (4.1.35) 7 (Core) 81 CentOS Linux (4.1.35.old) 7 (Core) 82 CentOS Linux (0-rescue-3214a594cd464aa4b9cb04679cf10aac) 7 (Core) 83 [root@yt-compute-r56-25 ~]# reboot 84 85 86 [root@yt-compute-r56-25 ~]# grub2-mkconfig -o /boot/grub2/grub.cfg 87 Generating grub configuration file ... 88 Found linux image: /boot/vmlinuz-5.18.14-1.el7.elrepo.x86_64 89 Found initrd image: /boot/initramfs-5.18.14-1.el7.elrepo.x86_64.img 90 Found linux image: /boot/vmlinuz-0-rescue-3214a594cd464aa4b9cb04679cf10aac 91 Found initrd image: /boot/initramfs-0-rescue-3214a594cd464aa4b9cb04679cf10aac.img 92 done 93 94 95 [root@yt-compute-r56-25 ~]# awk -F\' '$1=="menuentry " {print $2}' /etc/grub2.cfg 96 CentOS Linux (5.18.14-1.el7.elrepo.x86_64) 7 (Core) 97 CentOS Linux (0-rescue-3214a594cd464aa4b9cb04679cf10aac) 7 (Core) 98 [root@yt-compute-r56-25 ~]# 99 100 [root@yt-compute-r56-25 ~]# grub2-set-default 0 101 [root@yt-compute-r56-25 ~]# grub2-editenv list 102 saved_entry=0 103 [root@yt-compute-r56-25 ~]# 104 105 [root@yt-compute-r56-25 ~]# vim /etc/default/ 106 grub nss useradd 107 [root@yt-compute-r56-25 ~]# vim /etc/default/grub 108 109 [root@yt-compute-r56-25 ~]# reboot 110 111 112 113 内核删除 114 如果有时候想要删除自己编译的内核 就需要手动删除一些文件 注意不要用dpkg那些 因为这个内核是你自己装的 不归它管 115 主要就是进入/boot 删除对应版本的所有信息 116 还有一个就是/lib/modules里对应版本的文件夹 117 118 全部删除完成之后 update-grub2就ok了 119 120 原文链接：https://blog.csdn.net/qq_40819252/article/details/120909453
