쿠버네티스 Pod Affinity

1 개요

쿠버네티스 Pod Affinity Rules

쿠버네티스 Pod 어피니티 규칙

• 연산자 In, NotIn, Exists, DoesNotExist 사용

requiredDuringSchedulingIgnoredDuringExecution	hard 강한 규칙(강제사항)
preferredDuringSchedulingIgnoredDuringExecution	soft 약한 규칙(권장사항)

pod-with-pod-affinity.yaml

apiVersion: v1
kind: Pod
metadata:
  name: with-pod-affinity
spec:
  affinity:
    podAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
      - labelSelector:
          matchExpressions:
          - key: security
            operator: In
            values:
            - S1
        topologyKey: failure-domain.beta.kubernetes.io/zone
    podAntiAffinity:
      preferredDuringSchedulingIgnoredDuringExecution:
      - weight: 100
        podAffinityTerm:
          labelSelector:
            matchExpressions:
            - key: security
              operator: In
              values:
              - S2
          topologyKey: failure-domain.beta.kubernetes.io/zone
  containers:
  - name: with-pod-affinity
    image: k8s.gcr.io/pause:2.0

2 같이 보기

• 쿠버네티스 Pod
• 쿠버네티스 PodSpec
• 쿠버네티스 Affinity
• 쿠버네티스 Node Affinity
• 쿠버네티스 nodeSelector
• 쿠버네티스 스케줄링

3 참고

• https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.14/#pod-v1-core
• https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity