drainhelper

Documentation

Index

• type DrainHelper
  • func NewDrainHelper(log logr.Logger, cs *clientset.Clientset, nodeName, namespace string) *DrainHelper
  • func (dh *DrainHelper) Run(f func(context.Context) bool, drain bool) error

Types

type DrainHelper

type DrainHelper struct {
	// contains filtered or unexported fields
}

func NewDrainHelper

func NewDrainHelper(log logr.Logger, cs *clientset.Clientset, nodeName, namespace string) *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 fwddp-daemon where reboot must be performed without loosing the leadership and without the uncordon.