Replacing the Kernel

The Redis network multipathing and domain-based scheduling optimization features (hereinafter referred to as the features) require a specific kernel version. Therefore, you need to install a compatible OS kernel in advance. After the kernel is installed, you can use the built-in GRUB tool to change the default kernel boot entry, or use the iBMC remote management interface to replace the default kernel with the kernel that supports the features.

Using the CLI

Download the kernel RPM package that supports the features and upload it to the environment. Run the following command in the directory where the kernel RPM package is stored to install the kernel:

        
             rpm -ivh kernel-5.10.0-270.0.0.173.oe2203sp4.aarch64.rpm --force

Check the installed kernels and find the index of the kernel that supports the features. Assume that the index is 0.
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grubby --info=ALL | egrep -i 'index|title'
Replace the default kernel boot entry with index 0.
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grubby --set-default-index=0
Check that the default kernel has been replaced with the kernel that supports the features.
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grubby --default-kernel
Reboot the server.
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reboot

Using the iBMC

Download the kernel RPM package that supports the features and upload it to the environment. Run the following command in the directory where the kernel RPM package is stored to install the kernel:

        
             rpm -ivh kernel-5.10.0-270.0.0.173.oe2203sp4.aarch64.rpm --force

Log in to the iBMC.
Open the remote virtual console.
Forcibly restart the machine.
Select the kernel with network multipathing affinity and wait until the restart is complete.

Parent topic: Setting Up the Environment and Networking