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score: recommend setting hostname podAntiAffinity #77

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zegl opened this issue Jan 7, 2019 · 0 comments · Fixed by #78
Closed

score: recommend setting hostname podAntiAffinity #77

zegl opened this issue Jan 7, 2019 · 0 comments · Fixed by #78
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enhancement New feature or request

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@zegl
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zegl commented Jan 7, 2019

Recommend setting a podAntiAffinity on Deployments and StatefulSets:

Either a preferredDuringSchedulingIgnoredDuringExecution or a requiredDuringSchedulingIgnoredDuringExecution anti affinity with the kubernetes.io/hostname key should be set.

Setting this prevents all pods in a deployment from being scheduled on the same node if there are other nodes available.

spec:
  template:
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
           - topologyKey: "kubernetes.io/hostname"
@zegl zegl added the enhancement New feature or request label Jan 7, 2019
@zegl zegl changed the title score: recommend score: recommend setting hostname podAntiAffinity Jan 7, 2019
zegl added a commit that referenced this issue Jan 7, 2019
@zegl
score: recommend setting podAntiAffinity against scheduling on the sa…
a60b617 
…me node

This check checks if Deployments and StatefulSets has a podAntiAffinity set with kubernetes.io/hostname as the topology key

This should help prevent scheduling pods on the same node, which can be a bad practice in case that node disappears (for whaterver reason)

This fixes #77
@zegl zegl mentioned this issue Jan 7, 2019
Merged
@zegl zegl closed this as completed in #78 Jan 7, 2019
zegl added a commit that referenced this issue Jan 7, 2019
@zegl
score: recommend setting podAntiAffinity against scheduling on the sa…
af98457 
…me node

This check checks if Deployments and StatefulSets has a podAntiAffinity set with kubernetes.io/hostname as the topology key

This should help prevent scheduling pods on the same node, which can be a bad practice in case that node disappears (for whaterver reason)

This fixes #77
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Recommend setting podAntiAffinity for Deployments and StatefulSets zegl/kube-score
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@zegl