Taints and Tolerations
Prevent Pods from being scheduled on specific nodes using taints and allow certain Pods to tolerate them.
What are Taints?
Imagine you have special nodes in your Kubernetes cluster, perhaps with specific hardware like GPUs, or reserved for certain workloads. You wouldn't want just any Pod to land there, right?
This is where Taints come in! A Taint is a property applied to a node that prevents Pods from being scheduled on it, unless those Pods explicitly "tolerate" that taint.
Reasons to Use Taints
Taints are super useful for managing where Pods run:
- Dedicated Nodes: Reserve nodes for specific teams or applications.
- Special Hardware: Isolate nodes with GPUs or high-performance SSDs for Pods that need them.
- Maintenance: Mark a node for maintenance, preventing new Pods from being scheduled there temporarily.
All lessons in this course
- Resource Requests and Limits
- Node Selectors and Affinity
- Taints and Tolerations
- Pod Priority and Preemption