Taint

A Taint is a fundamental Kubernetes object that includes three mandatory properties: key, value, and effect. Its main purpose is to prevent the scheduling of Pods on nodes or node groups that do not meet certain requirements. Taints work in conjunction with tolerations to ensure that Pods are scheduled only on appropriate nodes. Nodes are assigned one or more taints, and a Pod can only be scheduled on a node that has the corresponding toleration for the specified taints.