Unknown means unknown I am afraid. I can't explain it. Firewall, proxy, security policy, etc. could you any of them or others.
Sheng Wu 吴晟 Twitter, wusheng1108 dafang <[email protected]> 于2021年9月13日周一 下午4:37写道： > > Hello god wu.Through my check, I have found that there some error info in my > skywalking-agent logs,such as "Send UpstreamSegment to collector fail with a > grpc internal exception. > org.apache.skywalking.apm.dependencies.io.grpc.StatusRuntimeException: > UNAVAILABLE: Network closed for unknown reason" > How to explain it? > > > > > > > > > > > > > > > > > > At 2021-09-13 15:05:24, "Sheng Wu" <[email protected]> wrote: > >(1) All data in that bulk(ElasticSearch concept, read their doc) will > >be lost, yes. > >(2) This only means your agent gets disconnected from Server > >unexpectedly. For a reason about why, it wouldn't tell. > > > >About what you described in Chinese, first of all, it is better to > >keep Chinese and English consistent, don't put more information on one > >side, it is confusing. > >Why the agent will be disconnected forever, it can't be told from what > >you have provided. > >Auto reconnecting is working normally AFAIK. > > > >Sheng Wu 吴晟 > >Twitter, wusheng1108 > > > >dafang <[email protected]> 于2021年9月13日周一 下午2:58写道： > >> > >> And now. I have two questions > >> 1.if this error exist,will all trace and jvm metric be lost? > >> 2.if there some msg in server logs just > >> like:"org.apache.skywalking.oap.server.receiver.trace.provider.handler.v8.grpc.TraceSegmentReportServiceHandler > >> - 86 [grpcServerPool-1-thread-7] ERROR [] - CANCELLED: cancelled before > >> receiving half close > >> io.grpc.StatusRuntimeException: CANCELLED: cancelled before receiving half > >> close" > >> will this make trace or jvm metrics be lost? > >> > >> > >> 中文解释一下：我现在线上100多台机器，就会经常出现某些实例机器是好的，但是就会经常出现机器trace指标或者jvm指标丢失后就完全不会再出现，除非重启服务，我上面列举的这两个情况会导致我预见的这种情况么？ > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> 在 2021-09-13 14:50:14，"Sheng Wu" <[email protected]> 写道： > >> >That error does matter. HTTP too large will make ElasticSearch reject. > >> >your bulk insert, which causes data loss. > >> > > >> >Sheng Wu 吴晟 > >> >Twitter, wusheng1108 > >> > > >> >dafang <[email protected]> 于2021年9月13日周一 下午2:23写道： > >> >> > >> >> Hi skywalking dev team: > >> >> In our prod env,I had found that the trace and jvm metrics lost after > >> >> some service start . And agent logs show no error info.Only server log > >> >> show: "Es 413 request too large".Will this problem cause complete data > >> >> loss? > >> >> > >> >> > >> >> 我用中文再形容一下： > >> >> 最近发现我们线上服务集群原本有15台机器，但是接入skywalking之后，有一部分(大概5-6台)，过了一段时间之后，trace指标或者jvm指标或者两者同时 > >> >> 会消失，但是此时该服务是可以继续提供服务的，只是监控数据没有了。经过排查 > >> >> 发现agent-log中没有任何错误信息，仅在服务端的日志中找到一些"413 request too large"的es报错，我想咨询一下 > >> >> ，这个问题会导致trace或者jvm指标入库失败之后，再也不会采集存储了么？ > >> >> > >> >> > >> >> wait for your help > >> >> yours > >> >> 大方 > >> >> 2021.09.13
