IsKubeletVerisionTooOld answers that very question.

IsNodeTooOld answers that very question.

ParseKubeletVersion parses it into a semver.Version object, stripping any information in the version that isn't "major.minor.patch".

ValidateMinimumKubeletVersion takes a list of nodes and a currently set min version.

An error to be returned when kubelet version is lower than specified minimum kubelet version.