easayliu opened a new issue #7416:
URL: https://github.com/apache/skywalking/issues/7416
Please answer these questions before submitting your issue.
- Why do you submit this issue?
- [x] Question or discussion
- [x] Bug
- [ ] Requirement
- [ ] Feature or performance improvement
___
### Question
- What do you want to know?
- I have get 500 at UI log.
___
### Bug
- Which version of SkyWalking, OS, and JRE?
- 8.7.0
- Which company or project?
- What happened?
If possible, provide a way to reproduce the error. e.g. demo application,
component version.
___
### Requirement or improvement
- Please describe your requirements or improvement suggestions.
Use Helm deploy this, get the 500 error in the website.
and the log is like
```
2021-08-06 06:16:35.394 ERROR 1 --- [or-http-epoll-3]
a.w.r.e.AbstractErrorWebExceptionHandler : [a20a4287-1] 500 Server Error for
HTTP GET "/graphql"
java.net.UnknownHostException: failed to resolve 'http:' after 2 queries
at
io.netty.resolver.dns.DnsResolveContext.finishResolve(DnsResolveContext.java:1013)
Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException:
Error has been observed at the following site(s):
|_ checkpoint ⇢
org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter
[DefaultWebFilterChain]
|_ checkpoint ⇢
org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter
[DefaultWebFilterChain]
|_ checkpoint ⇢ HTTP GET "/graphql" [ExceptionHandlingWebHandler]
Stack trace:
at
io.netty.resolver.dns.DnsResolveContext.finishResolve(DnsResolveContext.java:1013)
at
io.netty.resolver.dns.DnsResolveContext.tryToFinishResolve(DnsResolveContext.java:966)
at
io.netty.resolver.dns.DnsResolveContext.query(DnsResolveContext.java:414)
at
io.netty.resolver.dns.DnsResolveContext.tryToFinishResolve(DnsResolveContext.java:938)
at
io.netty.resolver.dns.DnsResolveContext.access$700(DnsResolveContext.java:63)
at
io.netty.resolver.dns.DnsResolveContext$2.operationComplete(DnsResolveContext.java:467)
at
io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:578)
at
io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:571)
at
io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:550)
at
io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:491)
at
io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:616)
at
io.netty.util.concurrent.DefaultPromise.setSuccess0(DefaultPromise.java:605)
at
io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)
at
io.netty.resolver.dns.DnsQueryContext.trySuccess(DnsQueryContext.java:201)
at
io.netty.resolver.dns.DnsQueryContext.finish(DnsQueryContext.java:193)
at
io.netty.resolver.dns.DnsNameResolver$DnsResponseHandler.channelRead(DnsNameResolver.java:1264)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at
io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at
io.netty.channel.epoll.EpollDatagramChannel.processPacket(EpollDatagramChannel.java:616)
at
io.netty.channel.epoll.EpollDatagramChannel.recvmsg(EpollDatagramChannel.java:651)
at
io.netty.channel.epoll.EpollDatagramChannel.access$100(EpollDatagramChannel.java:56)
at
io.netty.channel.epoll.EpollDatagramChannel$EpollDatagramChannelUnsafe.epollInReady(EpollDatagramChannel.java:490)
at
io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:480)
at
io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378)
at
io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
at
io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:834)
```
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