Topologyspreadconstraints
Parameters
Template
The following tabs display the definition's Cue template and the rendered YAML. The rendered YAML is the output of the Cue template when the definition is applied to a cluster.
Cue
Rendered YAML
topologyspreadconstraints: {
type: "trait"
annotations: {}
labels: {
"definition.spectrocloud.com/category": "Scheduling"
}
description: "Add topology spread constraints hooks for every container of K8s pod for your workload which follows the pod spec in path 'spec.template'."
attributes: {}
}
template: {
constraintsArray: [
for v in parameter.constraints {
maxSkew: v.maxSkew
topologyKey: v.topologyKey
whenUnsatisfiable: v.whenUnsatisfiable
labelSelector: v.labelSelector
if v.nodeAffinityPolicy != _|_ {
nodeAffinityPolicy: v.nodeAffinityPolicy
}
if v.nodeTaintsPolicy != _|_ {
nodeTaintsPolicy: v.nodeTaintsPolicy
}
if v.minDomains != _|_ {
minDomains: v.minDomains
}
if v.matchLabelKeys != _|_ {
matchLabelKeys: v.matchLabelKeys
}
},
]
patch: spec: template: spec: {
topologySpreadConstraints: constraintsArray
}
#labSelector: {
matchLabels?: [string]: string
matchExpressions?: [...{
key: string
operator: *"In" | "NotIn" | "Exists" | "DoesNotExist"
values?: [...string]
}]
}
parameter: {
constraints!: [...{
// +usage=Describe the degree to which Pods may be unevenly distributed
maxSkew: int
// +usage=Specify the key of node labels
topologyKey: string
// +usage=Indicate how to deal with a Pod if it doesn't satisfy the spread constraint
whenUnsatisfiable: *"DoNotSchedule" | "ScheduleAnyway"
// +usage=labelSelector to find matching Pods
labelSelector: #labSelector
// +usage=Indicate a minimum number of eligible domains
minDomains?: int
// +usage=A list of pod label keys to select the pods over which spreading will be calculated
matchLabelKeys?: [...string]
// +usage=Indicate how we will treat Pod's nodeAffinity/nodeSelector when calculating pod topology spread skew
nodeAffinityPolicy?: *"Honor" | "Ignore"
// +usage=Indicate how we will treat node taints when calculating pod topology spread skew
nodeTaintsPolicy?: *"Honor" | "Ignore"
}]
}
}