volumerestrictions

package
v1.23.0-beta.0 Latest Latest
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Published: Nov 17, 2021 License: Apache-2.0 Imports: 12 Imported by: 6

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Constants

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const (
	// ErrReasonDiskConflict is used for NoDiskConflict predicate error.
	ErrReasonDiskConflict = "node(s) had no available disk"
	// ErrReasonReadWriteOncePodConflict is used when a pod is found using the same PVC with the ReadWriteOncePod access mode.
	ErrReasonReadWriteOncePodConflict = "node has pod using PersistentVolumeClaim with the same name and ReadWriteOncePod access mode"
)

Name is the name of the plugin used in the plugin registry and configurations.

Variables

This section is empty.

Functions

func New

New initializes a new plugin and returns it.

Types

type VolumeRestrictions

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

VolumeRestrictions is a plugin that checks volume restrictions.

func (*VolumeRestrictions) EventsToRegister added in v1.22.0

func (pl *VolumeRestrictions) EventsToRegister() []framework.ClusterEvent

EventsToRegister returns the possible events that may make a Pod failed by this plugin schedulable.

func (*VolumeRestrictions) Filter

Filter invoked at the filter extension point. It evaluates if a pod can fit due to the volumes it requests, and those that are already mounted. If there is already a volume mounted on that node, another pod that uses the same volume can't be scheduled there. This is GCE, Amazon EBS, ISCSI and Ceph RBD specific for now: - GCE PD allows multiple mounts as long as they're all read-only - AWS EBS forbids any two pods mounting the same volume ID - Ceph RBD forbids if any two pods share at least same monitor, and match pool and image, and the image is read-only - ISCSI forbids if any two pods share at least same IQN and ISCSI volume is read-only

func (*VolumeRestrictions) Name

func (pl *VolumeRestrictions) Name() string

Name returns name of the plugin. It is used in logs, etc.

func (*VolumeRestrictions) PreFilter added in v1.22.0

func (pl *VolumeRestrictions) PreFilter(ctx context.Context, cycleState *framework.CycleState, pod *v1.Pod) *framework.Status

func (*VolumeRestrictions) PreFilterExtensions added in v1.22.0

func (pl *VolumeRestrictions) PreFilterExtensions() framework.PreFilterExtensions

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