配置以下VirtualService资源定义。如果http header里包含end-user且其值为jason则路由到v2版本reviews，否则访问v1版本reviews
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apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: reviews namespace: istio-bookinfo spec: hosts: - reviews http: - match: - headers: end-user: exact: jason route: - destination: host: reviews subset: v2 - route: - destination: host: reviews subset: v1 |
施加virtualservice定义之后的envoy route配置
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"routes": [ { "match": { "prefix": "/", "caseSensitive": true, "headers": [ { "name": "end-user", "exactMatch": "jason" } ] }, "route": { "cluster": "outbound|9080|v2|reviews.istio-bookinfo.svc.cluster.local", "timeout": "0s", "retryPolicy": { "retryOn": "connect-failure,refused-stream,unavailable,cancelled,retriable-status-codes", "numRetries": 2, "retryHostPredicate": [ { "name": "envoy.retry_host_predicates.previous_hosts" } ], "hostSelectionRetryMaxAttempts": "5", "retriableStatusCodes": [ 503 ] }, "maxGrpcTimeout": "0s" }, "metadata": { "filterMetadata": { "istio": { "config": "/apis/networking.istio.io/v1alpha3/namespaces/istio-bookinfo/virtual-service/reviews" } } }, "decorator": { "operation": "reviews.istio-bookinfo.svc.cluster.local:9080/*" } }, { "match": { "prefix": "/" }, "route": { "cluster": "outbound|9080|v1|reviews.istio-bookinfo.svc.cluster.local", "timeout": "0s", "retryPolicy": { "retryOn": "connect-failure,refused-stream,unavailable,cancelled,retriable-status-codes", "numRetries": 2, "retryHostPredicate": [ { "name": "envoy.retry_host_predicates.previous_hosts" } ], "hostSelectionRetryMaxAttempts": "5", "retriableStatusCodes": [ 503 ] }, "maxGrpcTimeout": "0s" }, "metadata": { "filterMetadata": { "istio": { "config": "/apis/networking.istio.io/v1alpha3/namespaces/istio-bookinfo/virtual-service/reviews" } } }, "decorator": { "operation": "reviews.istio-bookinfo.svc.cluster.local:9080/*" } } ], |
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