Istio从入门到精通—— 流量治理的原理 —— VirutalService —— HTTPRedirect

流量治理的原理 —— VirutalService —— HTTPRedirect

https://istio.io/latest/docs/reference/config/networking/virtual-service/#HTTPRedirect

  HTTPRedirect can be used to send a 301 redirect response to the caller, where the Authority/Host and the URI in the response can be swapped with the specified values. For example, the following rule redirects requests for /v1/getProductRatings API on the ratings service to /v1/bookRatings provided by the bookratings service.

HTTPRedirect 可用于向调用方发送 301 重定向响应，其中 Authority/Host 和响应中的 URI 可与指定值交换。例如，以下规则将评级服务上的 /v1/getProductRatings API 请求重定向到 bookRatings 服务提供的 /v1/bookRatings。

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: ratings-route
spec:
  hosts:
  - ratings.prod.svc.cluster.local
  http:
  - match:
    - uri:
        exact: /v1/getProductRatings
    redirect:
      uri: /v1/bookRatings
      authority: newratings.default.svc.cluster.local
  ...

Field	Type	Description	Required
uri	string	On a redirect, overwrite the Path portion of the URL with this value. Note that the entire path will be replaced, irrespective of the request URI being matched as an exact path or prefix.	No
authority	string	On a redirect, overwrite the Authority/Host portion of the URL with this value.	No
port	uint32 (oneof)	On a redirect, overwrite the port portion of the URL with this value.	No
derivePort	RedirectPortSelection (oneof)	On a redirect, dynamically set the port: FROM_PROTOCOL_DEFAULT: automatically set to 80 for HTTP and 443 for HTTPS. FROM_REQUEST_PORT: automatically use the port of the request.	No
scheme	string	On a redirect, overwrite the scheme portion of the URL with this value. For example, http or https. If unset, the original scheme will be used. If derivePort is set to FROM_PROTOCOL_DEFAULT, this will impact the port used as well	No
redirectCode	uint32	On a redirect, Specifies the HTTP status code to use in the redirect response. The default response code is MOVED_PERMANENTLY (301).	No