cluster

Documentation

Overview

Package cluster contains code for syncing cluster

Index

• Constants
• Variables
• type ClusterClient
  • func NewClusterClientSet(c *federation_v1alpha1.Cluster) (*ClusterClient, error)
  • func (self *ClusterClient) GetClusterHealthStatus() *federation_v1alpha1.ClusterStatus
  • func (self *ClusterClient) GetClusterZones() (zones []string, region string, err error)
• type ClusterController
  • func NewclusterController(federationClient federationclientset.Interface, ...) *ClusterController
  • func (cc *ClusterController) GetClusterStatus(cluster *federation_v1alpha1.Cluster) (*federation_v1alpha1.ClusterStatus, error)
  • func (cc *ClusterController) Run()
  • func (cc *ClusterController) UpdateClusterStatus() error

Constants

const (
	UserAgentName           = "Cluster-Controller"
	KubeAPIQPS              = 20.0
	KubeAPIBurst            = 30
	KubeconfigSecretDataKey = "kubeconfig"
)

Variables

var KubeconfigGetterForCluster = func(c *federation_v1alpha1.Cluster) clientcmd.KubeconfigGetter {
	return func() (*clientcmdapi.Config, error) {

		namespace := os.Getenv("POD_NAMESPACE")
		if namespace == "" {
			return nil, fmt.Errorf("unexpected: POD_NAMESPACE env var returned empty string")
		}

		client, err := client.NewInCluster()
		if err != nil {
			return nil, fmt.Errorf("error in creating in-cluster client: %s", err)
		}
		data := []byte{}
		if c.Spec.SecretRef != nil {
			secret, err := client.Secrets(namespace).Get(c.Spec.SecretRef.Name)
			if err != nil {
				return nil, fmt.Errorf("error in fetching secret: %s", err)
			}
			ok := false
			data, ok = secret.Data[KubeconfigSecretDataKey]
			if !ok {
				return nil, fmt.Errorf("secret does not have data with key: %s", KubeconfigSecretDataKey)
			}
		} else {
			glog.Infof("didnt find secretRef for cluster %s. Trying insecure access", c.Name)
		}
		return clientcmd.Load(data)
	}
}

This is to inject a different kubeconfigGetter in tests. We dont use the standard one which calls NewInCluster in tests to avoid having to setup service accounts and mount files with secret tokens.

Types

type ClusterClient

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

func NewClusterClientSet

func NewClusterClientSet(c *federation_v1alpha1.Cluster) (*ClusterClient, error)

func (*ClusterClient) GetClusterHealthStatus

func (self *ClusterClient) GetClusterHealthStatus() *federation_v1alpha1.ClusterStatus

GetClusterHealthStatus gets the kubernetes cluster health status by requesting "/healthz"

func (*ClusterClient) GetClusterZones

func (self *ClusterClient) GetClusterZones() (zones []string, region string, err error)

GetClusterZones gets the kubernetes cluster zones and region by inspecting labels on nodes in the cluster.

type ClusterController

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

func NewclusterController

func NewclusterController(federationClient federationclientset.Interface, clusterMonitorPeriod time.Duration) *ClusterController

NewclusterController returns a new cluster controller

func (*ClusterController) GetClusterStatus

func (cc *ClusterController) GetClusterStatus(cluster *federation_v1alpha1.Cluster) (*federation_v1alpha1.ClusterStatus, error)

func (*ClusterController) Run

func (cc *ClusterController) Run()

Run begins watching and syncing.

func (*ClusterController) UpdateClusterStatus

func (cc *ClusterController) UpdateClusterStatus() error

UpdateClusterStatus checks cluster status and get the metrics from cluster's restapi