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Posted to notifications@dubbo.apache.org by "WesleyWu (via GitHub)" <gi...@apache.org> on 2023/06/21 14:48:55 UTC
[GitHub] [dubbo-go] WesleyWu opened a new issue, #2342: Support direct connecting to endpoint with xds protocol
WesleyWu opened a new issue, #2342:
URL: https://github.com/apache/dubbo-go/issues/2342
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**What would you like to be added**:
支持像 grpc 官方示例中的直连 xds 协议的 endpoint
https://github.com/grpc/grpc-go/blob/master/examples/features/xds/client/main.go
例如这样的配置文件：
```
dubbo:
consumer:
references:
GreeterClientImpl:
url: xds:///dubbogo-helloworld:20000
protocol: tri
```
**Why is this needed**:
我在GKE中部署了 dubbo-go 的 provider 服务端，并且使用了GCP Traffic Director来提供 proxyless 的 service mesh。
实测，通过 python 的 grpc 客户端，以及 [grpc-go官方示例](https://github.com/grpc/grpc-go/blob/master/examples/features/xds/client/main.go) ，都可以正常通过
`xds:///dubbogo-helloworld:20000` 这样的 endpoint 调用 provider 的 rpc 方法。
但不知道怎么配置dubbo-go 的客户端这么做。
注意：使用了GCP Traffic Director做proxyless服务网格，就不再需要上报服务到注册中心，客户端也不需要通过注册中心来获取具体的服务端点，而是通过支持xds协议的 `xds:///dubbogo-helloworld:20000` 来获取服务端点（可实现自动负载均衡）。
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[GitHub] [dubbo-go] ZLBer commented on issue #2342: Support direct connecting to endpoint with xds protocol
Posted by "ZLBer (via GitHub)" <gi...@apache.org>.
ZLBer commented on issue #2342:
URL: https://github.com/apache/dubbo-go/issues/2342#issuecomment-1606045560
you can refer to these documents about proxyless：
https://dubbogo.github.io/zh-cn/docs/user/tasks/mesh/traffic_management.html
https://dubbogo.github.io/zh-cn/docs/user/concept/mesh/proxyless_service_mesh.html
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[GitHub] [dubbo-go] justxuewei commented on issue #2342: Support direct connecting to endpoint with xds protocol
Posted by "justxuewei (via GitHub)" <gi...@apache.org>.
justxuewei commented on issue #2342:
URL: https://github.com/apache/dubbo-go/issues/2342#issuecomment-1605310913
@ZLBer Could you take a look at this?
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[GitHub] [dubbo-go] WesleyWu commented on issue #2342: Support direct connecting to endpoint with xds protocol
Posted by "WesleyWu (via GitHub)" <gi...@apache.org>.
WesleyWu commented on issue #2342:
URL: https://github.com/apache/dubbo-go/issues/2342#issuecomment-1617206756
> you can refer to these documents about proxyless： https://dubbogo.github.io/zh-cn/docs/user/tasks/mesh/traffic_management.html https://dubbogo.github.io/zh-cn/docs/user/concept/mesh/proxyless_service_mesh.html
谢谢指出。我事先对dubbo-go的官方方案进行过测试，遇到的问题是：
1) GKE 不再官方支持 istio ，取而代之是使用 [anthos](https://zhuanlan.zhihu.com/p/411049617) ，与 istio 兼容。生产部署时，无法在 anthos 中将 istio 的实例设置为只有1个，不满足[这里指出的条件](https://dubbogo.github.io/zh-cn/docs/user/tasks/mesh/build.html)。我在其他的 k8s 发行版，例如 minikube里，可以测试工作正常。
2) 如果使用非go/java的其他语言（例如python）客户端，无法通过 istio 的 xds 端点获取 dubbo 服务的负载均衡设置。即，不管后端部署了多少个 Provider 节点 Pod，Consumer 始终只会调用第一个。可能是 python 语言的 xds client支持不完善，且 triple 协议支持缺失，只能通过标准的 gRPC 协议，设定 xds 的 bootstrap 文件来指定后端。
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