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zh-translation: /zh/docs/reference/config/analysis/ist0131/index.md (#9172)
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---
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title: VirtualServiceIneffectiveMatch
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layout: analysis-message
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owner: istio/wg-user-experience-maintainers
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test: no
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---
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当 Virtual Service 包含一个永远不会使用的匹配规则时,会出现此消息,因为之前的规则中指定了相同的匹配规则。
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## 示例{#example}
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当您的集群中包含下列 Virtual Service 时:
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{{< text yaml >}}
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apiVersion: networking.istio.io/v1alpha3
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kind: VirtualService
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metadata:
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name: tls-routing
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spec:
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hosts:
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- www1.googleapis.com
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- api1.facebook.com
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tls:
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- match:
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- port: 2443
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sniHosts:
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- www1.googleapis.com
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route:
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- destination:
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host: www1.googleapis.com
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- match:
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- port: 2443
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sniHosts:
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- www1.googleapis.com
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route:
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- destination:
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host: api1.facebook.com
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{{< /text >}}
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您将会收到以下信息:
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{{< text plain >}}
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Info [IST0131] (VirtualService tls-routing.default) VirtualService rule #1 match #0 is not used (duplicates a match in rule #0).
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{{< /text >}}
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在这个示例中,Virtual Service 对两个不同的目的地指定了相同的匹配规则。Istio 会使用第一个匹配规则,并且不会转发任何流量到第二个目的地。
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## 解决方案{#how-to-resolve}
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如果您需要流量能够流向多个目的地,请使用 `mirror`。
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重新排列您的路由,将最具体的路由放在前面。请在最后配置 'catch all' 路由。
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