04-01 06:22 阅读 159

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k8s亲和性应用示例

由于特殊需求，需要将特定命名空间下的pod调度到特定的节点上，本来直接使用硬节点亲和性就可以了，但是后面由于安装了中间件nacos，这个本身自带pod亲和性，就需要同时配置pod亲和性和node亲和性，这里将改好的配置做个记录，如下:

    spec:
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: xiamentag
                operator: In
                values:
                - xiamen
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - podAffinityTerm:
              labelSelector:
                matchExpressions:
                - key: app
                  operator: In
                  values:
                  - nacos
              topologyKey: kubernetes.io/hostname
            weight: 100

需要注意的是将原来nacos的pod硬亲和性改成软亲和性才可以，不然会报错

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