【SUSE Linux kernel版本升级】SUSE Linux Enterprise Server 12 SP5

安装完SUSE Linux操作系统后，正常会将SUSE Linux的kernel升级至最新版本。

本次实验环境是SUSE Linux Enterprise Server 12 SP5：

​cat /etc/*-release​

SAPTEST:~ # cat /etc/*-release
SUSE Linux Enterprise Server 12 (x86_64)
VERSION = 12
PATCHLEVEL = 5
# This file is deprecated and will be removed in a future service pack or release.
# Please check /etc/os-release for details about this release.
NAME="SLES"
VERSION="12-SP5"
VERSION_ID="12.5"
PRETTY_NAME="SUSE Linux Enterprise Server 12 SP5"
ID="sles"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:suse:sles_sap:12:sp5"
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操作系统安装后，kernel的初始版本是4.12.14-120-default：

​uname -a​

SAPTEST:~ # uname -a
Linux SAPTEST 4.12.14-120-default #1 SMP Thu Nov 7 16:39:09 UTC 2019 (fd9dc36) x86_64 x86_64 x86_64 GNU/Linux
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升级SUSE kernel有两种方式，方式一是通过配置zypper源并使用zypper命令来升级kernel至最新版本，方式二是手工下载最新版本的kernel文件并升级kernel版本。方式一可以自动升级软件包及相关联的软件包。

​kernel升级方式一：通过zypper命令升级​

​zypper update kernel​

SAPTEST:~ # zypper update kernel
Loading repository data...
Reading installed packages...
'kernel' not found in package names. Trying capabilities.
Resolving package dependencies...

Nothing to do.
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以上结果是因为未配置zypper源，故通过zyyper命令无法升级SUSE kernel版本。

​kernel升级方式二：手工下载kernel文件并升级​

手工下载kernel文件之前，需要先确认需要下载哪些kernel包以及当前kernel包的版本：

​rpm -qa|grep kernel​

SAPTEST:/sapcd/SUSE12SP5 # rpm -qa|grep kernel
kernel-default-devel-4.12.14-120.1.x86_64
kernel-macros-4.12.14-120.1.noarch
kernel-default-4.12.14-120.1.x86_64
kernel-devel-4.12.14-120.1.noarch
kernel-source-4.12.14-120.1.noarch
nfs-kernel-server-1.3.0-34.18.1.x86_64
kernel-firmware-20190618-5.11.1.noarch
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通过网址​ ​https://scc.suse.com​​登录SUSE Customer Center并下载kernel包：

将下载的kernel包放入同一个目录/sapcd/SUSE12SP5底下：

SAPTEST:/sapcd/SUSE12SP5 # ls -l
total 218716
-rwxrwxrwx 1 root root  56229932 Mar 21 16:29 kernel-default-4.12.14-122.113.1.x86_64.rpm
-rwxrwxrwx 1 root root   9894850 Mar 21 16:29 kernel-default-devel-4.12.14-122.113.1.x86_64.rpm
-rwxrwxrwx 1 root root  20808345 Mar 21 16:29 kernel-devel-4.12.14-122.113.1.noarch.rpm
-rwxrwxrwx 1 root root   7289636 Mar 21 16:29 kernel-macros-4.12.14-122.113.1.noarch.rpm
-rwxrwxrwx 1 root root 127765484 Mar 21 16:29 kernel-source-4.12.14-122.113.1.noarch.rpm
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升级SUSE Linux kenel：

​rpm -Uvh kernel*​

SAPTEST:/sapcd/SUSE12SP5 # rpm -Uvh kernel*
error: Failed dependencies:
        suse-kernel-rpm-scriptlets is needed by kernel-default-4.12.14-122.113.1.x86_64
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升级kernel出现报错suse-kernel-rpm-scriptlets is needed by kernel-default-4.12.14-122.113.1.x86_64，这是因为kernel-default包的关联包suse-module-tools也需要同步升级，否则将升级失败。

先确认当前suse-module-tools包的版本：

​rpm -qa|grep suse-module-tools​

SAPTEST:/sapcd/SUSE12SP5 # rpm -qa|grep suse-module-tools
suse-module-tools-12.7-1.6.x86_64
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下载suse-module-tools包并放入同一个目录/sapcd/SUSE12SP5底下：

SAPTEST:/sapcd/SUSE12SP5 # ls -l
total 218760
-rwxrwxrwx 1 root root  56229932 Mar 22 10:20 kernel-default-4.12.14-122.113.1.x86_64.rpm
-rwxrwxrwx 1 root root   9894850 Mar 22 10:20 kernel-default-devel-4.12.14-122.113.1.x86_64.rpm
-rwxrwxrwx 1 root root  20808345 Mar 22 10:20 kernel-devel-4.12.14-122.113.1.noarch.rpm
-rwxrwxrwx 1 root root   7289636 Mar 22 10:20 kernel-macros-4.12.14-122.113.1.noarch.rpm
-rwxrwxrwx 1 root root 127765484 Mar 22 10:20 kernel-source-4.12.14-122.113.1.noarch.rpm
-rwxrwxrwx 1 root root     44826 Mar 22 10:19 suse-module-tools-12.11-3.8.1.x86_64.rpm
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同时升级kernel包和suse-module-tools包：

​rpm -Uvh kernel* suse-module-tools*​

SAPTEST:/sapcd/SUSE12SP5 # rpm -Uvh kernel* suse-module-tools*
Preparing...                          ################################# [100%]
Updating / installing...
   1:suse-module-tools-12.11-3.8.1    ################################# [  8%]
   2:kernel-macros-4.12.14-122.113.1  ################################# [ 17%]
   3:kernel-devel-4.12.14-122.113.1   ################################# [ 25%]
Changing symlink /usr/src/linux from linux-4.12.14-120 to linux-4.12.14-122.113
   4:kernel-default-devel-4.12.14-122.################################# [ 33%]
Changing symlink /usr/src/linux-obj/x86_64/default from ../../linux-4.12.14-120-obj/x86_64/default to ../../linux-4.12.14-122.113-obj/x86_64/default
   5:kernel-source-4.12.14-122.113.1  ################################# [ 42%]
   6:kernel-default-4.12.14-122.113.1 ################################# [ 50%]
Creating initrd: /boot/initrd-4.12.14-122.113-default
dracut: Executing: /usr/bin/dracut --logfile /var/log/YaST2/mkinitrd.log --force /boot/initrd-4.12.14-122.113-default 4.12.14-122.113-default
dracut: *** Including module: bash ***
dracut: *** Including module: systemd ***
dracut: *** Including module: warpclock ***
dracut: *** Including module: systemd-initrd ***
dracut: *** Including module: i18n ***
dracut: *** Including module: drm ***
dracut: *** Including module: plymouth ***
dracut: *** Including module: dm ***
dracut: Skipping udev rule: 64-device-mapper.rules
dracut: Skipping udev rule: 60-persistent-storage-dm.rules
dracut: Skipping udev rule: 55-dm.rules
dracut: *** Including module: kernel-modules ***
dracut: *** Including module: lvm ***
dracut: Skipping udev rule: 64-device-mapper.rules
dracut: Skipping udev rule: 56-lvm.rules
dracut: Skipping udev rule: 60-persistent-storage-lvm.rules
dracut: *** Including module: resume ***
dracut: *** Including module: rootfs-block ***
dracut: *** Including module: suse-btrfs ***
dracut: *** Including module: suse-xfs ***
dracut: *** Including module: terminfo ***
dracut: *** Including module: udev-rules ***
dracut: Skipping udev rule: 40-redhat.rules
dracut: Skipping udev rule: 50-firmware.rules
dracut: Skipping udev rule: 50-udev.rules
dracut: Skipping udev rule: 91-permissions.rules
dracut: Skipping udev rule: 80-drivers-modprobe.rules
dracut: *** Including module: dracut-systemd ***
dracut: *** Including module: haveged ***
dracut: *** Including module: usrmount ***
dracut: *** Including module: base ***
dracut: *** Including module: fs-lib ***
dracut: *** Including module: shutdown ***
dracut: *** Including module: suse ***
dracut: *** Including modules done ***
dracut: *** Installing kernel module dependencies and firmware ***
dracut: *** Installing kernel module dependencies and firmware done ***
dracut: *** Resolving executable dependencies ***
dracut: *** Resolving executable dependencies done***
dracut: *** Hardlinking files ***
dracut: *** Hardlinking files done ***
dracut: *** Stripping files ***
dracut: *** Stripping files done ***
dracut: *** Generating early-microcode cpio image ***
dracut: *** Constructing GenuineIntel.bin ****
dracut: *** Store current command line parameters ***
dracut: Stored kernel commandline:
dracut:  rd.lvm.lv=system/swap
 rd.lvm.lv=system/root
dracut:  resume=/dev/mapper/system-swap
dracut:  root=/dev/mapper/system-root rootfstype=xfs rootflags=rw,relatime,attr2,inode64,noquota
dracut: *** Creating image file '/boot/initrd-4.12.14-122.113-default' ***
dracut: *** Creating initramfs image file '/boot/initrd-4.12.14-122.113-default' done ***
Cleaning up / removing...
   7:kernel-source-4.12.14-120.1      ################################# [ 58%]
   8:kernel-default-devel-4.12.14-120.################################# [ 67%]
   9:kernel-devel-4.12.14-120.1       ################################# [ 75%]
  10:kernel-default-4.12.14-120.1     ################################# [ 83%]
  11:suse-module-tools-12.7-1.6       ################################# [ 92%]
  12:kernel-macros-4.12.14-120.1      ################################# [100%]
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查看升级后的kernel版本和suse-module-tools版本：

​rpm -qa|grep kernel​

SAPTEST:~ # rpm -qa|grep kernel
kernel-source-4.12.14-122.113.1.noarch
kernel-macros-4.12.14-122.113.1.noarch
kernel-default-devel-4.12.14-122.113.1.x86_64
kernel-default-4.12.14-122.113.1.x86_64
kernel-devel-4.12.14-122.113.1.noarch
nfs-kernel-server-1.3.0-34.18.1.x86_64
kernel-firmware-20190618-5.11.1.noarch
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​rpm -qa|grep suse-module-tools​

SAPTEST:~ # rpm -qa|grep suse-module-tools
suse-module-tools-12.11-3.8.1.x86_64
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重启操作系统使最新版本的SUSE Linux kernel生效：

​uname -a​

​reboot​

SAPTEST:~ # uname -a
Linux AMERT73T01 4.12.14-120-default #1 SMP Thu Nov 7 16:39:09 UTC 2019 (fd9dc36) x86_64 x86_64 x86_64 GNU/Linux
SAPTEST:~ # reboot
SAPTEST:~ # uname -a
Linux AMERT73T01 4.12.14-122.113-default #1 SMP Tue Mar 1 11:43:17 UTC 2022 (fe89a8c) x86_64 x86_64 x
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