Documentation
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Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func GetThresholdQuantity ¶
func GetThresholdQuantity(value ThresholdValue, capacity *resource.Quantity) *resource.Quantity
GetThresholdQuantity returns the expected quantity value for a thresholdValue
Types ¶
type Signal ¶
type Signal string
Signal defines a signal that can trigger eviction of pods on a node.
const (
// SignalMemoryAvailable is memory available (i.e. capacity - workingSet), in bytes.
SignalMemoryAvailable Signal = "memory.available"
// SignalNodeFsAvailable is amount of storage available on filesystem that kubelet uses for volumes, daemon logs, etc.
SignalNodeFsAvailable Signal = "nodefs.available"
// SignalNodeFsInodesFree is amount of inodes available on filesystem that kubelet uses for volumes, daemon logs, etc.
SignalNodeFsInodesFree Signal = "nodefs.inodesFree"
// SignalImageFsAvailable is amount of storage available on filesystem that container runtime uses for storing images and container writable layers.
SignalImageFsAvailable Signal = "imagefs.available"
// SignalImageFsInodesFree is amount of inodes available on filesystem that container runtime uses for storing images and container writeable layers.
SignalImageFsInodesFree Signal = "imagefs.inodesFree"
// SignalAllocatableMemoryAvailable is amount of memory available for pod allocation (i.e. allocatable - workingSet (of pods), in bytes.
SignalAllocatableMemoryAvailable Signal = "allocatableMemory.available"
// SignalAllocatableNodeFsAvailable is amount of local storage available for pod allocation
SignalAllocatableNodeFsAvailable Signal = "allocatableNodeFs.available"
)
type Threshold ¶
type Threshold struct {
// Signal defines the entity that was measured.
Signal Signal
// Operator represents a relationship of a signal to a value.
Operator ThresholdOperator
// Value is the threshold the resource is evaluated against.
Value ThresholdValue
// GracePeriod represents the amount of time that a threshold must be met before eviction is triggered.
GracePeriod time.Duration
// MinReclaim represents the minimum amount of resource to reclaim if the threshold is met.
MinReclaim *ThresholdValue
}
Threshold defines a metric for when eviction should occur.
type ThresholdOperator ¶
type ThresholdOperator string
ThresholdOperator is the operator used to express a Threshold.
const (
// OpLessThan is the operator that expresses a less than operator.
OpLessThan ThresholdOperator = "LessThan"
)
type ThresholdValue ¶
type ThresholdValue struct {
// Quantity is a quantity associated with the signal that is evaluated against the specified operator.
Quantity *resource.Quantity
// Percentage represents the usage percentage over the total resource that is evaluated against the specified operator.
Percentage float32
}
ThresholdValue is a value holder that abstracts literal versus percentage based quantity
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