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

VPC-CNI configuration variables

{"env": {"AWS_VPC_K8S_CNI_CUSTOM_NETWORK_CFG":"true","ENABLE_PREFIX_DELEGATION":"true","ENI_CONFIG_LABEL_DEF":"topology.kubernetes.io/zone","WARM_PREFIX_TARGET":"1"}}

AWS_VPC_K8S_CNI_CUSTOM_NETWORK_CFG = true
ENABLE_PREFIX_DELEGATION = true
ENI_CONFIG_LABEL_DEF = topology.kubernetes.io/zone
WARM_PREFIX_TARGET = 1

Related

• Kubernetes Pod Topology Spread Constraints
• affinity:

See also

• topology.kubernetes.io
• AWS VPC CNI, aws-node (ipamd): (aws-node, aws-eks-nodeagent, aws-vpc-cni-init), cluster_addons: vpc-cni, aws-network-policy-agent: aws-eks-na-cli, AmazonEKS_CNI_Policy, AmazonEKS_CNI_Policy, aws-cni, topology.kubernetes.io, Configuration variables
• 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