Kubernetes Pod Topology Spread Constraints

• https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/

apiVersion: v1
kind: Pod
metadata:
  name: mypod
spec:
  topologySpreadConstraints:
    - maxSkew: <integer>
      topologyKey: <string>
      whenUnsatisfiable: [ DoNotSchedule | ScheduleAnyway ]
      labelSelector: <object>

kubectl describe nodes | grep topology
topology.kubernetes.io/zone
topology.kubernetes.io/region

Related

• Kubernetes Topology Manager introduced in (March 2020) Kubernetes 1.18
• NodeAffinity
• NodeSelector
• kubectl get nodes -o wide

.../... NOMINATED NODE READINESS GATE

• Kubernetes troubleshooting
• Kubernetes scheduling
• Kubernetes pod affinity and anti affinity

spec.nodeSelector
defaultConstraints: Kubernetes v1.24 

• Karpenter

See also

• Kubernetes Topology Manager, K8s Pod Topology Spread Constraints, topologySpreadConstraints, TopologyKey

https://kubernetes.io/docs/concepts/scheduling-eviction/topology-spread-constraints/#internal-default-constraints