# Use Kubernetes Taints

Node affinity is a property of pods that attracts them to a set of nodes. Kubernetes taints, on the other hand, are the opposite: they allow a node to repel a set of pods.

You can read the [official Kubernetes documentation](https://kubernetes.io/docs/concepts/scheduling-eviction/taint-and-toleration/) to learn more about taints and toleration.

To associate taints on your nodepool workers, you can use the `--nodepool-taint=KEY=VALUE:EFFECT` option.

For instances use the `--nodepool-taint=type=GPU:NoSchedule` option.

After a taint is registered on a nodepool worker, only pods with [tolerations](https://kubernetes.io/docs/concepts/scheduling-eviction/taint-and-toleration/) will be scheduled for that worker.

Taints options can be repeated in order to register multiple taints.