You have two options:

1. Node Affinity: property of Pods which attract them to set of nodes.
2. Taints & Toleration : Taints are opposite of Node Affinity, they allow node to repel set of Pods.

Using Node Affinity

1. You need to label your nodes: kubectl label nodes node1 mylabel=specialpods

2. Then when you launch Pods specify the affinity:

apiVersion: v1 kind: Pod metadata: name: mypod spec: affinity: nodeAffinity: requiredDuringSchedulingIgnoredDuringExecution: nodeSelectorTerms: - matchExpressions: - key: mylabel operator: In values: - specialpods containers:

• name: nginx-container image: nginx

Using Taint & Toleration

Taint & Toleration work together: you taint a node, and then specify the toleration for pod, only those Pods will be scheduled on node whose toleration "matches" taint:

1. Taint: kubectl taint nodes node1 mytaint=specialpods:NoSchedule

2. Add toleration in Pod Spec:

apiVersion: v1 kind: Pod metadata: name: mypod spec: tolerations:

• key: "mytaint" operator: "Equal" value: "specialpods" effect: "NoSchedule" containers:
• name: nginx-container image: nginx