If a server patched with a new kernel update reboots and comes up with the old kernel, how would you troubleshoot this issue?

Question

Accepted Answer

To troubleshoot a server that booted up with the old kernel after a new kernel update, check the bootloader configuration, verify the kernel installation, and review the update process.

Check the bootloader configuration to ensure it is pointing to the correct kernel version.
Verify the kernel installation to see if the new kernel was successfully installed.
Review the update process to identify any errors or issues that may have occurred during the update.
Check the logs for any relevant information on the update process and boot sequence.
Consider rolling back the update and reapplying it to see if that resolves the issue.

Asked in Infosys

If a server patched with a new kernel update reboots and comes up with the old kernel, how would you troubleshoot this issue?

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