- A+
所属分类：K8S
位置：deploy.spec.template.spec.affinity
硬亲和和软亲和说明：（不管是node还是pod都可以用软亲和或者硬亲和）
- requiredDuringSchedulingIgnoredDuringExecution（硬亲和）：必须满足，如果不满足则不进行调度
- preferredDuringSchedulingIgnoredDuringExecution（软亲和）：倾向满足，不满足的情况下会调度的不符合条件的Node上。
Node亲和性：
nodeAffinity
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apiVersion: v1 kind: Pod metadata: name: nginx spec: affinity: nodeAffinity: requiredDuringSchedulingIgnoredDuringExecution: #硬亲和 nodeSelectorTerms: - matchExpressions: - key: kubernetes.io/e2e-az-name #NODE的key operator: In #在 values: #值里面 - e2e-az1 - e2e-az2 preferredDuringSchedulingIgnoredDuringExecution:#软亲和 - weight: 1 //取值范围1-100 preference: matchExpressions: - key: another-node-label-key operator: In values: - another-node-label-value containers: - name: nginx image: docker.io/nginx |
Pod亲和性：
podAffinity：pod和pod运行在一起
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apiVersion: v1 kind: Pod metadata: name: with-pod-affinity spec: affinity: podAffinity: requiredDuringSchedulingIgnoredDuringExecution: #硬亲和，必须满足 - labelSelector: #pod标签选择器 matchExpressions: - key: security #key operator: In #在 values: - S1 #value的列表 topologyKey: kubernetes.io/hostname #通过node的hostname判断是否是相同节点，节点名一定不能一样 containers: - name: with-pod-affinity image: k8s.gcr.io/pause:2.0 |
podAntiAffinity： pod和pod不能在一起
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apiVersion: v1 kind: Pod metadata: name: with-pod-affinity spec: affinity: podAntiAffinity: preferredDuringSchedulingIgnoredDuringExecution: #软亲和 - weight: 100 #权重 podAffinityTerm: labelSelector: matchExpressions: - key: security operator: In values: - S2 #pod label security=s2,则不能调度 topologyKey: kubernetes.io/hostname #通过node的hostname判断是否是相同节点，节点名一定不能一样 containers: - name: with-pod-affinity image: k8s.gcr.io/pause:2.0 |
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