banned_9-26-2021
How can a running server (or system in general) switch kernels without rebooting?
For a single user system the time of rebooting is of no major concern, but let's say we have an important server in a network that can't afford to bring down to replace a kernel (maybe for utilizing newer hw that we have employed). Will the system crash if we alter the currently used kernel? Whether we want to add some modules or firmware or replacing a 4.9 with a 4.14 for example.
I don't even understand where to start even reading about this issue, all searches have led to unrelated matters.