Sysadmin Question about KernelCare

I am wondering how kernel care interact with new kernel updates coming from yup update....

I mean does let it install but keep it there until reboot or avoid it to get installed as it is patching live kernel?

Is there any Paypal automated payment option for renews?

Is there an option to select a license using a key as it seems better to use?

Thank you

 

You can install the latest up-to-date kernel.
Nothing is blocked by default.

Kernelcare will only patch the running kernel code in the memory, that is booted.
Rebooting and it will do the same (if needed) with the newly up-to-date booted kernel.

Kernelcare is like kpatch and allows entire functions in a running kernel to be replaced with their patched versions, doing that safely by stopping all running processes while the live patching is performed. Kernelcare is based on kpatch actually.

And if you ask me in fairness, I'm not a fan of Kernelcare or any live patch solution.
The upstream kernels are tested to the max for enterprise purposes but live patches not.
You could experience strange problems making a reboot still required.
Also there could be a problem here or there. The Kernel is only a tiny part of the whole eco system.

You always will have maintenance's based on hard and software, so your system still needs to be powered off or rebooted. An live patching solution isn't need when your infrastructure is redundant. If your system is mission critical and therefore you are considering Kernelcare, it is most likely redundant. So again no need to use Kernelcare.