银河麒麟服务器升级内核，更改内核启动项

升级内核，更改内核启动项

环境信息：

v10服务器版本通用，以 24.2 内核版本作为参考，灵活处理

实施步骤：

查看当前启动

[root@localhost ~]# awk -F\' '$1=="menuentry " {print i++ " : " $2}' /boot/efi/EFI/kylin/grub.cfg

0 : Kylin Linux Advanced Server (4.19.90-23.6.v2101.ky10.aarch64) V10 (Tercel)

1 : Kylin Linux Advanced Server (0-rescue-9f2c76dc926340dd83f51659b9dab205) V10 (Tercel)

2 : System setup

[root@localhost ~]# grub2-editenv list

saved_entry=Kylin Linux Advanced Server (4.19.90-23.6.v2101.ky10.aarch64) V10 (Tercel)

boot_success=0

提取以下包

[root@localhost ~]# ll kernel-*

-rw------- 1 root root  2372320  5月 16 21:17 kernel-4.19.90-24.2.v2101.ky10.aarch64.rpm

-rw------- 1 root root 45828624  5月 16 21:33 kernel-core-4.19.90-24.2.v2101.ky10.aarch64.rpm

-rw------- 1 root root 14518888  5月 17 15:11 kernel-devel-4.19.90-24.2.v2101.ky10.aarch64.rpm

-rw------- 1 root root  3572696  5月 17 14:57 kernel-headers-4.19.90-24.2.v2101.ky10.aarch64.rpm

-rw------- 1 root root 12667124  5月 16 21:33 kernel-modules-4.19.90-24.2.v2101.ky10.aarch64.rpm

-rw------- 1 root root  2834688  5月 17 16:56 kernel-modules-extra-4.19.90-24.2.v2101.ky10.aarch64.rpm

-rw------- 1 root root  2445944  5月 17 16:56 kernel-modules-internal-4.19.90-24.2.v2101.ky10.aarch64.rpm

安装内核与模块包 （不可一个个安装）

[root@localhost ~]# rpm -ivh kernel-core-4.19.90-24.2.v2101.ky10.aarch64.rpm kernel-modules-4.19.90-24.2.v2101.ky10.aarch64.rpm kernel-4.19.90-24.2.v2101.ky10.aarch64.rpm kernel-modules-extra-4.19.90-24.2.v2101.ky10.aarch64.rpm kernel-modules-internal-4.19.90-24.2.v2101.ky10.aarch64.rpm

升级devel、headers

[root@localhost ~]# rpm -Uvh kernel-devel-4.19.90-24.2.v2101.ky10.aarch64.rpm

[root@localhost ~]# rpm -Uvh kernel-headers-4.19.90-24.2.v2101.ky10.aarch64.rpm

查看默认启动项

[root@localhost ~]# grub2-editenv list

saved_entry=Kylin Linux Advanced Server (4.19.90-24.2.v2101.ky10.aarch64) V10 (Tercel)

boot_success=0

如果已设置为升级后的内核，则执行重启服务器。如果没有则手动设置

设置默认启动项

[root@localhost ~]#  grub2-set-default kernel-4.19.90-24.2.v2101.ky10.aarch64.rpm

#查看当前启动的项                                          

[root@localhost ~]# grub2-editenv list

saved_entry=kernel-4.19.90-24.2.v2101.ky10.aarch64.rpm

boot_success=0

重启服务器确认默认内核版本

###重启

[root@localhost ~]# reboot

###确认版本

[root@localhost ~]# uname -r

4.19.90-24.2.v2101.ky10.aarch64