drainhelper

func (*DrainHelper) Run ¶

func (dh *DrainHelper) Run(f func(context.Context) bool, drain bool) error

Run joins leader election and drains(only if drain is set) the node if becomes a leader.

f is a function that takes a context and returns a bool. It should return true if uncordon should be performed(Only applicable if drain is set to true). If `f` returns false, the uncordon does not take place. This is useful in 2-step scenario like sriov-fec-daemon where reboot must be performed without loosing the leadership and without the uncordon.