Difference between revisions of "Kubernetes pod affinity and anti affinity"
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| Line 43: | Line 43: | ||
- weight: 1 | - weight: 1 | ||
| − | preference: | + | [[preference:]] |
| − | matchExpressions: | + | [[matchExpressions]]: |
- key: another-node-label-key | - key: another-node-label-key | ||
| Line 51: | Line 51: | ||
operator: In | operator: In | ||
| − | values: | + | [[values]]: |
- another-node-label-value | - another-node-label-value | ||
| − | containers: | + | [[containers]]: |
- name: with-node-affinity | - name: with-node-affinity | ||
Revision as of 15:18, 2 January 2023
https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#affinity-and-anti-affinity
- Elasticsearch PodAntiAffinity official example
0/11 nodes are available: 1 Insufficient cpu, 1 Too many pods, 10 nodes(s) didn't match Pod's node affinity/selector 0/2 nodes are available: 1 Too many pods, 1 nodes(s) didn't match Pod's node affinity/selector
Official examples
apiVersion: v1 kind: Pod metadata: name: with-node-affinity spec: affinity: nodeAffinity: requiredDuringSchedulingIgnoredDuringExecution: nodeSelectorTerms: - matchExpressions: - key: topology.kubernetes.io/zone operator: In values: - antarctica-east1 - antarctica-west1 preferredDuringSchedulingIgnoredDuringExecution: - weight: 1 preference: matchExpressions: - key: another-node-label-key operator: In values: - another-node-label-value containers: - name: with-node-affinity image: registry.k8s.io/pause:2.0
apiVersion: v1
kind: Pod
metadata:
name: with-pod-affinity
spec:
affinity:
podAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
- labelSelector:
matchExpressions:
- key: security
operator: In
values:
- S1
topologyKey: topology.kubernetes.io/zone
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- weight: 100
podAffinityTerm:
labelSelector:
matchExpressions:
- key: security
operator: In
values:
- S2
topologyKey: topology.kubernetes.io/zone
containers:
- name: with-pod-affinity
image: registry.k8s.io/pause:2.0
Related
default-scheduler
See also
- Pods:
kubectl apply,kubectl [ pod get | top | delete | describe pods ],InitContainers, PodInitializing, CrashLoopBackOff, ImagePullPolicy:, NodeAffinity, NodeSelector, Terminated
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