Kubernetes labels control node affinity, which is the property of pods that attracts them to a set of nodes. On the other hand, Kubernetes taints enable a node to repel a set of pods. In addition, pods can have tolerances for taints to allow them to run on nodes with certain taints.
Taints are controlled with the kubectl taint nodes command, while node labels for various nodes can be customized with a configmap that contains the desired values. For a description of how to modify the default node labels, refer to the Customer Access Network (CAN) documentation.
The list of existing labels can be retrieved using the following command:
kubectl get nodes --show-labels
To learn more, refer to https://kubernetes.io/.