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Posted to notifications@dubbo.apache.org by GitBox <gi...@apache.org> on 2022/06/08 02:06:55 UTC
[GitHub] [dubbo-go] zgs225 opened a new issue, #1927: [xds registry] 在只有客户端 consumer 的情况下应用启动失败
zgs225 opened a new issue, #1927:
URL: https://github.com/apache/dubbo-go/issues/1927
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**What happened**:
在 [dubbo-go xds 文档中](https://dubbogo.github.io/zh-cn/docs/user/tasks/mesh/app.html) 有说明：”对于一个只有客户端的应用，可以不创建sevice，可以由开发者在模板中修改，本教程中我们默认创建。“， 但是在最新版本的 `dubbo-go` 项目中情况与该文档描述不一致。
启动一个只有 consumer 的应用，会报 "panic: Discovery local Pod's host from xds, failed please register service with endpoint to k8s" 的错误。
通过查阅源码，发现问题出现在初始化 xds registry 过程中，具体出问题的代码如下：
该处代码总是会等待通过 xDS 查询到 localIP，直到超时。
``` go
// file: remoting/xds/client.go:454
// 2. found local hostAddr
// todo: When would eds level watch be canceled?
cancel2 = w.xdsClient.WatchEndpoints(update.ClusterName, func(endpoint resource.EndpointsUpdate, err error) {
if foundLocal {
return
}
for _, v := range endpoint.Localities {
for _, e := range v.Endpoints {
logger.Infof("[XDS Wrapped Client] Sniffing Found eds endpoint = %+v", e)
if xdsCommon.NewHostNameOrIPAddr(e.Address).HostnameOrIP == w.localIP {
cluster := xdsCommon.NewCluster(update.ClusterName)
w.hostAddr = cluster.Addr
foundLocal = true
close(foundLocalStopCh)
}
}
}
})
```
**What you expected to happen**:
**How to reproduce it (as minimally and precisely as possible)**:
**Anything else we need to know?**:
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[GitHub] [dubbo-go] zhaoyunxing92 commented on issue #1927: [xds registry] 在只有客户端 consumer 的情况下应用启动失败
Posted by GitBox <gi...@apache.org>.
zhaoyunxing92 commented on issue #1927:
URL: https://github.com/apache/dubbo-go/issues/1927#issuecomment-1152352519
@LaurenceLiZhixin
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[GitHub] [dubbo-go] LaurenceLiZhixin commented on issue #1927: [xds registry] 在只有客户端 consumer 的情况下应用启动失败
Posted by GitBox <gi...@apache.org>.
LaurenceLiZhixin commented on issue #1927:
URL: https://github.com/apache/dubbo-go/issues/1927#issuecomment-1152358070
同学您好， 感谢对v3 mesh 场景的关注。可能是文档中表述的不太准确。
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[GitHub] [dubbo-go] zgs225 commented on issue #1927: [xds registry] 在只有客户端 consumer 的情况下应用启动失败
Posted by GitBox <gi...@apache.org>.
zgs225 commented on issue #1927:
URL: https://github.com/apache/dubbo-go/issues/1927#issuecomment-1152933753
好的，感谢解答。这种情况下，一个只有 consumer 的 Job 或者 Cronjob 也需要创建对应的 Service 才能运行。对于使用者来说有一些疑惑。
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[GitHub] [dubbo-go] LaurenceLiZhixin closed issue #1927: [xds registry] 在只有客户端 consumer 的情况下应用启动失败
Posted by GitBox <gi...@apache.org>.
LaurenceLiZhixin closed issue #1927: [xds registry] 在只有客户端 consumer 的情况下应用启动失败
URL: https://github.com/apache/dubbo-go/issues/1927
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