Set GRUB_DEFAULT by kernel version

[jabb degen]

Hey guys,

I want  set the GRUB_DEFAULT Variable accordingly to a specified kernel version. I'm not quite sure how to do it in an ansible clean way.

Pseudo code which explains the desired task

-----------------------

var kernelversion="5.0.3"

// file: /boot/grub/grub.cfg

parse_grub_cfg(kernelversion){

return(entry)

// entry=2>1 or 3>2, ....

}

file: /etc/default/grub

set_grub(entry)

-------------------------------

How can I achieve the task?

Solution A)

write an complete own module which parses the /boot/grub/grub.cfg file and than edits the /etc/default/grub file

Solution B)

write a custom fact. The custom fact sets the correct entry as new ansible variable than call the liniefile module to edit the /etc/default/grub file

Solution C)

call the script module with the parsing script

Solution D)

something complete different

Attached is the script for parsing the /boot/grub/grub.cfg