When you are upgrading the appliance and you had upgraded to 8.2 or later from a prior version, you may see the following error:
(104/134) Installing: kernel-default-4.12.14-95.45.1.x86_64 ........................................................................................[error] Installation of kernel-default-4.12.14-95.45.1.x86_64 failed: Error: Subprocess failed. Error: RPM failed: installing package kernel-default-4.12.14-95.45.1.x86_64 needs 4MB on the /boot filesystem
This is a known issue with the SUSE operating system and not with Sentinel. Therefore, to resolve this issue, follow the workaround provided in the SUSE documentation.