kubernetes

Documentation

Index

• Constants
• func IsMaster(node corev1.Node) bool
• type NodeMap
• type UtilsClient
  • func NewKubernetesClient(kubeconfig string) (utilsClient *UtilsClient, err error)
  • func (utilsClient *UtilsClient) ChangeNCNCordonState(ncn string, cordoned bool) error
  • func (utilsClient *UtilsClient) CordonNCN(ncn string) error
  • func (utilsClient *UtilsClient) DeleteNCN(ncn string) error
  • func (utilsClient *UtilsClient) DrainNCN(ncn string) error
  • func (utilsClient *UtilsClient) GetNodes() (nodeMap NodeMap, err error)
  • func (utilsClient *UtilsClient) IsMember(ncn string) (bool, error)
  • func (utilsClient *UtilsClient) UnCordonNCN(ncn string) error

Constants

const MinMasters = 1

MinMasters - Minimum number of master nodes the cluster can survive with.

const MinWorkers = 2

MinWorkers - Minimum number of workers nodes the cluster can survive with.

Functions

func IsMaster

func IsMaster(node corev1.Node) bool

IsMaster - Returns true if the given node is a master.

Types

type NodeMap

type NodeMap map[string]corev1.Node

NodeMap - Data type to hold a map between NCN name and Kubernetes node pointer.

type UtilsClient

type UtilsClient struct {
	Logger kubernetesLogger
	// contains filtered or unexported fields
}

UtilsClient - Structure for kubernetes client.

func NewKubernetesClient

func NewKubernetesClient(kubeconfig string) (utilsClient *UtilsClient, err error)

NewKubernetesClient - Creates a new kubernetes client.

func (*UtilsClient) ChangeNCNCordonState

func (utilsClient *UtilsClient) ChangeNCNCordonState(ncn string, cordoned bool) error

ChangeNCNCordonState - Cordons or uncordons the given NCN.

func (*UtilsClient) CordonNCN

func (utilsClient *UtilsClient) CordonNCN(ncn string) error

CordonNCN - Cordons the given NCN.

func (*UtilsClient) DeleteNCN

func (utilsClient *UtilsClient) DeleteNCN(ncn string) error

DeleteNCN - Deletes the NCN from Kubernetes.

func (*UtilsClient) DrainNCN

func (utilsClient *UtilsClient) DrainNCN(ncn string) error

DrainNCN - Draining an NCN is really 3 individual steps:

1. Cordon the node.
2. Identify any pods that might be on that node in violation of any pod distribution budgets and move them.
3. Drain the node.

func (*UtilsClient) GetNodes

func (utilsClient *UtilsClient) GetNodes() (nodeMap NodeMap, err error)

GetNodes - Returns a map of all the nodes.

func (*UtilsClient) IsMember

func (utilsClient *UtilsClient) IsMember(ncn string) (bool, error)

IsMember - Returns true if the given NCN is a member of Kubernetes.

func (*UtilsClient) UnCordonNCN

func (utilsClient *UtilsClient) UnCordonNCN(ncn string) error

UnCordonNCN - Uncordons the given NCN.