kubernetes - 同一主机申请的虚拟服务是否有优先级？

Question

我有两个命名空间。

应用:

服务A

服务B

虚拟服务 C -> B

gateway: mesh
host: serviceC.external.svc.cluster.local
destination: serviceB.application.svc.cluster.local
exportTo: . (same namespace)

外部的:

服务C

虚拟服务 C -> C

gateway: mesh
host: serviceC.external.svc.cluster.local
destination: serviceC.external.svc.cluster.local
exportTo: * (all namespaces)

问题:哪个虚拟服务处理从 serviceA 到 serviceC.external.svc.cluster.local 的请求？有没有优先级？

Istio 说:“只有绑定(bind)到网关的 VirtualService 才能以这种方式进行分段。 Sidecar 不支持主机合并。”

我试图重现这种情况，Virtual Service C -> B 处理请求并将其路由到 ServiceB。

Answer 1

如果我对您的理解正确，您应该查看一些记录在案的 Material :

您需要熟悉Routing rule precedence .

Multiple rules for a given destination in a configuration file are evaluated in the order they appear. The first rule on the list has the highest priority.

您也可以使用 Rules Configuration可以设置特定优先级:

Multiple route rules could be applied to the same destination. The order of evaluation of rules corresponding to a given destination, when there is more than one, can be specified by setting the precedence field of the rule.

The precedence field is an optional integer value, 0 by default. Rules with higher precedence values are evaluated first. If there is more than one rule with the same precedence value the order of evaluation is undefined.

我看到您正在使用不同的 namespace 。您还应该熟悉 Cross-namespace configuration sharing .

请让我知道这是否有帮助。