java kubernetes client error #8584
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/triage support |
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I am seeing the exact same problem. It affects K8s operators that we have had running for over a year, and they all started failing recently withe the same error, for all operations (list, watch...). Here is a sample exception: ** minikube info ** Kubernetes client: |
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The issue is also discussed here: |
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With SSL debugging I get the stack trace below. Some highlights, can someone confirm whether a client certificate is required to connect from a pod inside the cluster to the API server? Full stack trace: |
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Hey @zenbones thanks for opening this issue. Honestly, I'm not super familiar with this so I'm not sure exactly what the issue is. Some suggestions I can think of:
@franck102 you said:
Have you been running these operators in minikube? and did they only start failing in minikube? |
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@zenbones I wonder if the java client for kubernetes is using the different Cert format. |
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I recommend following this thread for better support #8584 |
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I have a pretty basic minikube setup running in hyperv. Just trying to make sure the basics work, and this is copied from the examples. This code running inside the image of a deployment...
...at the point of api.createNamespacedPod(), leads to...
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.smallmind.spark.singularity.boot.SingularityEntryPoint.main(SingularityEntryPoint.java:65)
Caused by: io.kubernetes.client.openapi.ApiException: java.net.SocketException: Broken pipe (Write failed)
at io.kubernetes.client.openapi.ApiClient.execute(ApiClient.java:898)
at io.kubernetes.client.openapi.apis.CoreV1Api.createNamespacedPodWithHttpInfo(CoreV1Api.java:7902)
at io.kubernetes.client.openapi.apis.CoreV1Api.createNamespacedPod(CoreV1Api.java:7876)
at com.forio.epicenter.k8s.operator.worker.WorkerController.main(WorkerController.java:58)
... 5 more
Caused by: java.net.SocketException: Broken pipe (Write failed)
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:111)
at java.net.SocketOutputStream.write(SocketOutputStream.java:155)
at sun.security.ssl.OutputRecord.writeBuffer(OutputRecord.java:431)
at sun.security.ssl.OutputRecord.write(OutputRecord.java:417)
at sun.security.ssl.SSLSocketImpl.writeRecordInternal(SSLSocketImpl.java:894)
at sun.security.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:865)
at sun.security.ssl.AppOutputStream.write(AppOutputStream.java:123)
at okio.Okio$1.write(Okio.java:79)
at okio.AsyncTimeout$1.write(AsyncTimeout.java:180)
at okio.RealBufferedSink.flush(RealBufferedSink.java:224)
at okhttp3.internal.http2.Http2Writer.settings(Http2Writer.java:185)
at okhttp3.internal.http2.Http2Connection.start(Http2Connection.java:499)
at okhttp3.internal.http2.Http2Connection.start(Http2Connection.java:489)
at okhttp3.internal.connection.RealConnection.startHttp2(RealConnection.java:315)
at okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:304)
at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:185)
at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.java:224)
at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.java:108)
at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.java:88)
at okhttp3.internal.connection.Transmitter.newExchange(Transmitter.java:169)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:41)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:94)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:88)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:221)
at okhttp3.RealCall.execute(RealCall.java:81)
at io.kubernetes.client.openapi.ApiClient.execute(ApiClient.java:894)
... 8 more
What's the best way to determine why I'm getting that error? Anything obvious I'm missing?
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