Spec.NodeSelector

• https://www.eksworkshop.com/beginner/140_assigning_pods/node_selector/

• https://kubernetes.io/docs/tasks/configure-pod-container/assign-pods-nodes/#create-a-pod-that-gets-scheduled-to-your-chosen-node

apiVersion: v1
kind: Pod
metadata:
  name: nginx
  labels:
    env: test
spec:
  containers:
  - name: nginx
    image: nginx
    imagePullPolicy: IfNotPresent
  nodeSelector:
    disktype: ssd

apiVersion: v1

kind: Pod

metadata:

  name: nginx

spec:

  nodeName: foo-node # schedule pod to specific node

  containers:

  - name: nginx

    image: nginx

    imagePullPolicy: IfNotPresent

Karpenter

nodeSelector:
  topology.kubernetes.io/zone: us-west-2a
  karpenter.sh/capacity-type: spot

nodeSelector:
  karpenter.sh/provisioner-name: XXXXX

DaemonSet

Stop DaemonSet by appliying a nodeSelector

• kubectl patch daemonset <name-of-daemon-set> -p '{"spec": {"template": {"spec": {"nodeSelector": {"non-existing": "true"}}}}}'

Start DaemonSet by removing the nodeSelector :

• kubectl patch daemonset <name-of-daemon-set> --type json -p='[{"op": "remove", "path": "/spec/template/spec/nodeSelector/non-existing"}]'

Activities

• CKA v1.21: Understand how to use Labels, Selector and Annotations
• CKA v1.18: Use label selectors to schedule Pods
• CKA v1.15: Understand how to use Labels, Selector and Annotations
• Use NodeSelector assign pod to specific node

Related terms

• Kubernetes scheduling
• kubectl label
• kubectl apply
• nodeAffinity
• Kubernetes Pod Topology Spread Constraints
• selector:

See also

• Kubernetes nodes, node.kubernetes.io K8s Node controller (node-controller), MemoryPressure, DiskPressure, NodeHasDiskPressure, events, NodeNotReady, Node-pressure Eviction, RemovingNode, ProviderID, kubectl node-shell, kubectl describe nodes
• Pods: kubectl apply, kubectl [ pod get | top | delete | describe pods ], InitContainers, PodInitializing, CrashLoopBackOff, ImagePullPolicy:, NodeAffinity, NodeSelector, Terminated
• Kubernetes pod affinity and anti affinity, Kubernetes Node Affinity, default-scheduler, affinity:, NodeAffinity, spec.affinity.podAntiAffinity