topology.kubernetes.io

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

   spec:
     affinity:
       nodeAffinity:
         requiredDuringSchedulingIgnoredDuringExecution:
           nodeSelectorTerms:
           - matchExpressions:
             - key: node_group
               operator: In
               values:
               - arm_db
             - key: topology.kubernetes.io/zone
               operator: In
               values:
               - us-east-1a

Related

• Kubernetes Pod Topology Spread Constraints
• affinity:

See also

• kubernetes.io: ( app | ingress | kubectl | bootstrap | beta | role | pv | annotations | topology ), k8s.io, kubernetes.io/ [ /tls | /ingress.class | /pvc-protection ]
• Kubernetes Topology Manager, K8s Pod Topology Spread Constraints, topologySpreadConstraints, TopologyKey

https://kubernetes.io/docs/reference/labels-annotations-taints/#topologykubernetesiozone

https://kubernetes.io/docs/reference/labels-annotations-taints/#topologykubernetesioregion