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SIMULATION - Upgrade the kernel, start the new kernel by default. kernel download from this address: ftp://server1.domain10.example.com/pub/update/new.kernel
Suggested Answer:See explanation below.
Download the new kernel file and then install it. [root@desktop8 Desktop]# ls kernel-2.6.32-71.7.1.el6.x86_64.rpm kernel-firmware-2.6.32-71.7.1.el6.noarch.rpm [root@desktop8 Desktop]# rpm -ivh kernel-* Preparing... ########################################### [100%] 1:kernel-firmware ########################################### [ 50%] 2:kernel ########################################### [100%] Verify the grub.conf file, whether use the new kernel as the default boot. [root@desktop8 Desktop]# cat /boot/grub/grub.conf default=0 title Red Hat Enterprise Linux Server (2.6.32-71.7.1.el6.x86_64) root (hd0,0) kernel /vmlinuz-2.6.32-71.7.1.el6.x86_64 ro root=/dev/mapper/vol0-root rd_LVM_LV=vol0/root rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet initrd /initramfs-2.6.32-71.7.1.el6.x86_64.img
#wget ftp://server1.domain10.example.com/pub/update/new.kernel
find the name of the new.kerrnal
#ls
#rpm -ivh new.kernel
list all install kernels
#dnf list installed kernel
#grubby --info=ALL
#grubby --set-default="/boot/vmlinuz-4.18.0-348.7.1.el8_5.x86_64"
#grubby --set-default-index=0
Yes we can
sudo dnf install kernel-5.14.0-427.24.1.el9_4.x86_64.rpm kernel-core-5.14.0-427.24.1.el9_4.x86_64.rpm kernel-modules-5.14.0-427.24.1.el9_4.x86_64.rpm kernel-modules-core-5.14.0-427.24.1.el9_4.x86_64.rpm
uname -r
sudo grubby --default-kernel
sudo reboot
uname -r
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