nodedrain

Documentation

Overview

Package nodedrain implements the controller for ensuring that drain detection deployments exist. The design and purpose for drain detection is found at: https://github.com/rook/rook/blob/master/design/ceph-managed-disruptionbudgets.md

Index

• Constants
• func Add(mgr manager.Manager, context *controllerconfig.Context) error
• type ReconcileNode
  • func (r *ReconcileNode) Reconcile(request reconcile.Request) (reconcile.Result, error)

Constants

const (

	// CanaryAppName is applied to nodedrain canary components (pods, deployments) with the key app
	CanaryAppName = "rook-ceph-drain-canary"
	NodeNameLabel = "node_name"
)

Functions

func Add

func Add(mgr manager.Manager, context *controllerconfig.Context) error

Add adds a new Controller based on nodedrain.ReconcileNode and registers the relevant watches and handlers

Types

type ReconcileNode

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

ReconcileNode reconciles ReplicaSets

func (*ReconcileNode) Reconcile

func (r *ReconcileNode) Reconcile(request reconcile.Request) (reconcile.Result, error)

Reconcile reconciles a node and ensures that it has a drain-detection deployment attached to it. The Controller will requeue the Request to be processed again if an error is non-nil or Result.Requeue is true, otherwise upon completion it will remove the work from the queue.