35 lines
1.2 KiB
Markdown
35 lines
1.2 KiB
Markdown
在 `topology.rules.nodeSelectors`中，你可以定义一组预置的节点选择器，然后在后面的 `topology.rules.components`中引用它们。关于节点选择器的定义方法和含义，参考[官方文档](https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/) 。
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```yaml
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spec:
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topology:
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rules:
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selectors:
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- name: zone-a
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nodeSelector:
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nodeSelectorTerms:
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- matchExpressions:
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- key: topology.kubernetes.io/zone
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operator: In
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values:
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- cn-hangzhou-a
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- name: zone-b
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nodeSelector:
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nodeSelectorTerms:
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- matchExpressions:
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- key: topology.kubernetes.io/zone
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operator: In
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values:
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- cn-hangzhou-b
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- name: zone-c
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nodeSelector:
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nodeSelectorTerms:
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- matchExpressions:
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- key: topology.kubernetes.io/zone
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operator: In
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values:
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- cn-hangzhou-c
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```
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节点选择器可以帮助我们控制部署实例的拓扑，例如两地三中心，三地五中心等，具体的使用可以参考：[容灾部署示例](./1-create-ha-example.md) 。
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