OBJECT
KubernetesKindReplicaSetSpecTemplateSpecTopologySpreadConstraints
TopologySpreadConstraint specifies how to spread matching pods among the given topology.
link GraphQL Schema definition
- type KubernetesKindReplicaSetSpecTemplateSpecTopologySpreadConstraints {
- # LabelSelector is used to find matching pods. Pods that match this label selector
- # are counted to determine the number of pods in their corresponding topology
- # domain.
- : KubernetesKindReplicaSetSpecTemplateSpecTopologySpreadConstraintsLabelSelector
- # MaxSkew describes the degree to which pods may be unevenly distributed. It's the
- # maximum permitted difference between the number of matching pods in any two
- # topology domains of a given topology type. For example, in a 3-zone cluster,
- # MaxSkew is set to 1, and pods with the same labelSelector spread as 1/1/0: |
- # zone1 | zone2 | zone3 | | P | P | | - if MaxSkew is 1, incoming
- # pod can only be scheduled to zone3 to become 1/1/1; scheduling it onto
- # zone1(zone2) would make the ActualSkew(2-0) on zone1(zone2) violate MaxSkew(1).
- # - if MaxSkew is 2, incoming pod can be scheduled onto any zone. It's a required
- # field. Default value is 1 and 0 is not allowed.
- : Int
- # TopologyKey is the key of node labels. Nodes that have a label with this key and
- # identical values are considered to be in the same topology. We consider each
- #
as a "bucket", and try to put balanced number of pods into each - # bucket. It's a required field.
- : String
- # WhenUnsatisfiable indicates how to deal with a pod if it doesn't satisfy the
- # spread constraint. - DoNotSchedule (default) tells the scheduler not to schedule
- # it - ScheduleAnyway tells the scheduler to still schedule it It's considered as
- # "Unsatisfiable" if and only if placing incoming pod on any topology violates
- # "MaxSkew". For example, in a 3-zone cluster, MaxSkew is set to 1, and pods with
- # the same labelSelector spread as 3/1/1: | zone1 | zone2 | zone3 | | P P P | P
- # | P | If WhenUnsatisfiable is set to DoNotSchedule, incoming pod can only be
- # scheduled to zone2(zone3) to become 3/2/1(3/1/2) as ActualSkew(2-1) on
- # zone2(zone3) satisfies MaxSkew(1). In other words, the cluster can still be
- # imbalanced, but scheduler won't make it *more* imbalanced. It's a required
- # field.
- : String
- }