Once the systemd unit and service files have come into being, understanding of the system services have changed a little bit and it might require some time to understand the cli tools for managing these services and units. That being the case, systemadm comes to rescue. This is a simple tool which :
The key file will not be there so there are two options for you in this case:
1) Install the following rpms from the downloaded rpms with \”yum –nogpg localinstall\”
2) Run the whole upgrade with –nogpg option.
Issue observed after the upgrade:
The new kernel was not added in the grub menu and I had to manually add the below entry in the menu.lst file: