Hi Yang, Oops, I forget to copy /etc/kube/admin.conf to $HOME/.kube/config so that the current user account can access to K8s. Now that I copied it, I found that kubernetes-session.sh is working fine. Thanks very much!
Best, Dongwon [flink@DAC-E04-W06 ~]$ kubernetes-session.sh 2020-05-09 12:43:49,961 INFO org.apache.flink.configuration.GlobalConfiguration - Loading configuration property: jobmanager.rpc.address, DAC-E04-W06 2020-05-09 12:43:49,962 INFO org.apache.flink.configuration.GlobalConfiguration - Loading configuration property: jobmanager.rpc.port, 6123 2020-05-09 12:43:49,962 INFO org.apache.flink.configuration.GlobalConfiguration - Loading configuration property: jobmanager.heap.size, 1024m 2020-05-09 12:43:49,962 INFO org.apache.flink.configuration.GlobalConfiguration - Loading configuration property: taskmanager.memory.process.size, 24g 2020-05-09 12:43:49,963 INFO org.apache.flink.configuration.GlobalConfiguration - Loading configuration property: taskmanager.numberOfTaskSlots, 24 2020-05-09 12:43:49,963 INFO org.apache.flink.configuration.GlobalConfiguration - Loading configuration property: parallelism.default, 1 2020-05-09 12:43:49,963 INFO org.apache.flink.configuration.GlobalConfiguration - Loading configuration property: high-availability, zookeeper 2020-05-09 12:43:49,963 INFO org.apache.flink.configuration.GlobalConfiguration - Loading configuration property: high-availability.zookeeper.path.root, /flink 2020-05-09 12:43:49,964 INFO org.apache.flink.configuration.GlobalConfiguration - Loading configuration property: high-availability.storageDir, hdfs:///user/flink/ha/ 2020-05-09 12:43:49,964 INFO org.apache.flink.configuration.GlobalConfiguration - Loading configuration property: high-availability.zookeeper.quorum, DAC-E04-W06:2181 2020-05-09 12:43:49,965 INFO org.apache.flink.configuration.GlobalConfiguration - Loading configuration property: jobmanager.execution.failover-strategy, region 2020-05-09 12:43:49,965 INFO org.apache.flink.configuration.GlobalConfiguration - Loading configuration property: rest.port, 8082 2020-05-09 12:43:51,122 INFO org.apache.flink.runtime.clusterframework.TaskExecutorProcessUtils - The derived from fraction jvm overhead memory (2.400gb (2576980416 bytes)) is greater than its max value 1024.000mb (1073741824 bytes), max value will be used instead 2020-05-09 12:43:51,123 INFO org.apache.flink.runtime.clusterframework.TaskExecutorProcessUtils - The derived from fraction network memory (2.291gb (2459539902 bytes)) is greater than its max value 1024.000mb (1073741824 bytes), max value will be used instead 2020-05-09 12:43:51,131 INFO org.apache.flink.kubernetes.utils.KubernetesUtils - Kubernetes deployment requires a fixed port. Configuration blob.server.port will be set to 6124 2020-05-09 12:43:51,131 INFO org.apache.flink.kubernetes.utils.KubernetesUtils - Kubernetes deployment requires a fixed port. Configuration taskmanager.rpc.port will be set to 6122 2020-05-09 12:43:51,134 INFO org.apache.flink.kubernetes.utils.KubernetesUtils - Kubernetes deployment requires a fixed port. Configuration high-availability.jobmanager.port will be set to 6123 2020-05-09 12:43:52,167 INFO org.apache.flink.kubernetes.KubernetesClusterDescriptor - Create flink session cluster flink-cluster-4a82d41b-af15-4205-8a44-62351e270242 successfully, JobManager Web Interface: http://cluster-endpoint:31513 On Sat, May 9, 2020 at 12:29 PM Yang Wang <danrtsey...@gmail.com> wrote: > Hi Dongwon Kim, > > Thanks a lot for your information. I will dig into this issue. > > I think the "UnknownHostException" is caused by incorrectly setting the > Kubernetes > ApiServer address. Maybe you are using "kubernetes.default.svc". However, > it > could not be accessed outside of the Kubernetes cluster. You need to > configure > a correct ip/hostname for ApiServer address, which could be accessed in > your > local environment. You could use `kubectl auth can-i create pods` to verify > whether the kube config is correct. > > BTW, currently we only find the flink on native K8s could not work on > 8u252. For > 8u242 and lower version, it works well. > > > Best, > Yang > > Dongwon Kim <eastcirc...@gmail.com> 于2020年5月9日周六 上午10:43写道： > >> Hello Yang, >> >> I'm using K8s v1.18.2 installed by Kubeadm over a cluster of 5 nodes (not >> a Minikube). >> Previously, as you pointed out, openjdk version "1.8.0_252" was installed. >> I bump up java version to openjdk 11.0.7 but got something different: >> >> [flink@DAC-E04-W06 bin]$ ./kubernetes-session.sh >> 2020-05-09 11:39:36,737 INFO >> org.apache.flink.configuration.GlobalConfiguration - Loading >> configuration property: jobmanager.rpc.address, DAC-E04-W06 >> 2020-05-09 11:39:36,739 INFO >> org.apache.flink.configuration.GlobalConfiguration - Loading >> configuration property: jobmanager.rpc.port, 6123 >> 2020-05-09 11:39:36,739 INFO >> org.apache.flink.configuration.GlobalConfiguration - Loading >> configuration property: jobmanager.heap.size, 1024m >> 2020-05-09 11:39:36,739 INFO >> org.apache.flink.configuration.GlobalConfiguration - Loading >> configuration property: taskmanager.memory.process.size, 24g >> 2020-05-09 11:39:36,739 INFO >> org.apache.flink.configuration.GlobalConfiguration - Loading >> configuration property: taskmanager.numberOfTaskSlots, 24 >> 2020-05-09 11:39:36,739 INFO >> org.apache.flink.configuration.GlobalConfiguration - Loading >> configuration property: parallelism.default, 1 >> 2020-05-09 11:39:36,740 INFO >> org.apache.flink.configuration.GlobalConfiguration - Loading >> configuration property: high-availability, zookeeper >> 2020-05-09 11:39:36,740 INFO >> org.apache.flink.configuration.GlobalConfiguration - Loading >> configuration property: high-availability.zookeeper.path.root, /flink >> 2020-05-09 11:39:36,740 INFO >> org.apache.flink.configuration.GlobalConfiguration - Loading >> configuration property: high-availability.storageDir, hdfs:///user/flink/ha/ >> 2020-05-09 11:39:36,740 INFO >> org.apache.flink.configuration.GlobalConfiguration - Loading >> configuration property: high-availability.zookeeper.quorum, DAC-E04-W06:2181 >> 2020-05-09 11:39:36,741 INFO >> org.apache.flink.configuration.GlobalConfiguration - Loading >> configuration property: jobmanager.execution.failover-strategy, region >> 2020-05-09 11:39:36,741 INFO >> org.apache.flink.configuration.GlobalConfiguration - Loading >> configuration property: rest.port, 8082 >> 2020-05-09 11:39:36,817 WARN io.fabric8.kubernetes.client.Config >> - Error reading service account token from: >> [/var/run/secrets/kubernetes.io/serviceaccount/token]. Ignoring. >> 2020-05-09 11:39:36,823 WARN io.fabric8.kubernetes.client.Config >> - Error reading service account token from: >> [/var/run/secrets/kubernetes.io/serviceaccount/token]. Ignoring. >> 2020-05-09 11:39:37,080 WARN io.fabric8.kubernetes.client.Config >> - Error reading service account token from: >> [/var/run/secrets/kubernetes.io/serviceaccount/token]. Ignoring. >> 2020-05-09 11:39:37,082 WARN io.fabric8.kubernetes.client.Config >> - Error reading service account token from: >> [/var/run/secrets/kubernetes.io/serviceaccount/token]. Ignoring. >> 2020-05-09 11:39:37,334 ERROR >> org.apache.flink.kubernetes.cli.KubernetesSessionCli - Error while >> running the Flink session. >> io.fabric8.kubernetes.client.KubernetesClientException: Operation: [get] >> for kind: [Service] with name: >> [flink-cluster-6adb7c62-8940-4828-990c-a87379102d61] in namespace: >> [default] failed. >> at >> io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:64) >> at >> io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:72) >> at >> io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:231) >> at >> io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:164) >> at >> org.apache.flink.kubernetes.kubeclient.Fabric8FlinkKubeClient.getService(Fabric8FlinkKubeClient.java:334) >> at >> org.apache.flink.kubernetes.kubeclient.Fabric8FlinkKubeClient.getInternalService(Fabric8FlinkKubeClient.java:246) >> at >> org.apache.flink.kubernetes.cli.KubernetesSessionCli.run(KubernetesSessionCli.java:104) >> at >> org.apache.flink.kubernetes.cli.KubernetesSessionCli.lambda$main$0(KubernetesSessionCli.java:185) >> at >> org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30) >> at >> org.apache.flink.kubernetes.cli.KubernetesSessionCli.main(KubernetesSessionCli.java:185) >> Caused by: java.net.UnknownHostException: kubernetes.default.svc: Name or >> service not known >> at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) >> at >> java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929) >> at >> java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1515) >> at >> java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848) >> at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505) >> at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1364) >> at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1298) >> at org.apache.flink.kubernetes.shadded.okhttp3.Dns$1.lookup(Dns.java:40) >> at >> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:185) >> at >> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:149) >> at >> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:84) >> at >> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:214) >> >> >> Thanks a lot for your interest :-) >> >> Best, >> >> Dongwon >> >> On Sat, May 9, 2020 at 11:15 AM Yang Wang <danrtsey...@gmail.com> wrote: >> >>> Hi Dongwon Kim, >>> >>> Are you running Flink on a minikube or a real Kubernetes cluster? I just >>> could not >>> reproduce it in a real Kubernetes cluster with java 8u252. For minikube, >>> i get the >>> exception with you. >>> >>> >>> Best, >>> Yang >>> >>> Yang Wang <danrtsey...@gmail.com> 于2020年5月6日周三 上午9:29写道： >>> >>>> Hi Dongwon Kim, >>>> >>>> I think it is a known issue. The native kubernetes integration could >>>> not work with jdk 8u252 >>>> due to okhttp issue[1]. Currently, you could upgrade your jdk to a new >>>> version to work around. >>>> >>>> >>>> [1]. https://issues.apache.org/jira/browse/FLINK-17416 >>>> >>>> Dongwon Kim <eastcirc...@gmail.com> 于2020年5月6日周三 上午7:15写道： >>>> >>>>> Hi, >>>>> >>>>> I'm using Flink-1.10 and tested everything [1] successfully. >>>>> While trying [2], I got the following message. >>>>> Can anyone help please? >>>>> >>>>> [root@DAC-E04-W06 bin]# ./kubernetes-session.sh >>>>>> 2020-05-06 08:10:49,411 INFO >>>>>> org.apache.flink.configuration.GlobalConfiguration - Loading >>>>>> configuration property: jobmanager.rpc.address, DAC-E04-W06 >>>>>> 2020-05-06 08:10:49,412 INFO >>>>>> org.apache.flink.configuration.GlobalConfiguration - Loading >>>>>> configuration property: jobmanager.rpc.port, 6123 >>>>>> 2020-05-06 08:10:49,412 INFO >>>>>> org.apache.flink.configuration.GlobalConfiguration - Loading >>>>>> configuration property: jobmanager.heap.size, 1024m >>>>>> 2020-05-06 08:10:49,412 INFO >>>>>> org.apache.flink.configuration.GlobalConfiguration - Loading >>>>>> configuration property: taskmanager.memory.process.size, 24g >>>>>> 2020-05-06 08:10:49,413 INFO >>>>>> org.apache.flink.configuration.GlobalConfiguration - Loading >>>>>> configuration property: taskmanager.numberOfTaskSlots, 24 >>>>>> 2020-05-06 08:10:49,413 INFO >>>>>> org.apache.flink.configuration.GlobalConfiguration - Loading >>>>>> configuration property: parallelism.default, 1 >>>>>> 2020-05-06 08:10:49,413 INFO >>>>>> org.apache.flink.configuration.GlobalConfiguration - Loading >>>>>> configuration property: high-availability, zookeeper >>>>>> 2020-05-06 08:10:49,413 INFO >>>>>> org.apache.flink.configuration.GlobalConfiguration - Loading >>>>>> configuration property: high-availability.zookeeper.path.root, /flink >>>>>> 2020-05-06 08:10:49,414 INFO >>>>>> org.apache.flink.configuration.GlobalConfiguration - Loading >>>>>> configuration property: high-availability.storageDir, >>>>>> hdfs:///user/flink/ha/ >>>>>> 2020-05-06 08:10:49,414 INFO >>>>>> org.apache.flink.configuration.GlobalConfiguration - Loading >>>>>> configuration property: high-availability.zookeeper.quorum, >>>>>> DAC-E04-W06:2181 >>>>>> 2020-05-06 08:10:49,414 INFO >>>>>> org.apache.flink.configuration.GlobalConfiguration - Loading >>>>>> configuration property: jobmanager.execution.failover-strategy, region >>>>>> 2020-05-06 08:10:49,415 INFO >>>>>> org.apache.flink.configuration.GlobalConfiguration - Loading >>>>>> configuration property: rest.port, 8082 >>>>>> 2020-05-06 08:10:50,386 ERROR >>>>>> org.apache.flink.kubernetes.cli.KubernetesSessionCli - Error >>>>>> while >>>>>> running the Flink session. >>>>>> io.fabric8.kubernetes.client.KubernetesClientException: Operation: >>>>>> [get] for kind: [Service] with name: >>>>>> [flink-cluster-5c12bd50-a540-4614-96d0-549785a8bc62] in namespace: >>>>>> [default] failed. >>>>>> at >>>>>> io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:64) >>>>>> at >>>>>> io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:72) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:231) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:164) >>>>>> at >>>>>> org.apache.flink.kubernetes.kubeclient.Fabric8FlinkKubeClient.getService(Fabric8FlinkKubeClient.java:334) >>>>>> at >>>>>> org.apache.flink.kubernetes.kubeclient.Fabric8FlinkKubeClient.getInternalService(Fabric8FlinkKubeClient.java:246) >>>>>> at >>>>>> org.apache.flink.kubernetes.cli.KubernetesSessionCli.run(KubernetesSessionCli.java:104) >>>>>> at >>>>>> org.apache.flink.kubernetes.cli.KubernetesSessionCli.lambda$main$0(KubernetesSessionCli.java:185) >>>>>> at >>>>>> org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30) >>>>>> at >>>>>> org.apache.flink.kubernetes.cli.KubernetesSessionCli.main(KubernetesSessionCli.java:185) >>>>>> 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 org.apache.flink.kubernetes.shadded.okio.Okio$1.write(Okio.java:79) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okio.AsyncTimeout$1.write(AsyncTimeout.java:180) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okio.RealBufferedSink.flush(RealBufferedSink.java:224) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http2.Http2Writer.settings(Http2Writer.java:203) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http2.Http2Connection.start(Http2Connection.java:515) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http2.Http2Connection.start(Http2Connection.java:505) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.RealConnection.startHttp2(RealConnection.java:298) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:287) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.RealConnection.connect(RealConnection.java:168) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:257) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) >>>>>> at >>>>>> io.fabric8.kubernetes.client.utils.BackwardsCompatibilityInterceptor.intercept(BackwardsCompatibilityInterceptor.java:119) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) >>>>>> at >>>>>> io.fabric8.kubernetes.client.utils.ImpersonatorInterceptor.intercept(ImpersonatorInterceptor.java:68) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) >>>>>> at >>>>>> io.fabric8.kubernetes.client.utils.HttpClientUtils.lambda$createHttpClient$3(HttpClientUtils.java:112) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:254) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.RealCall.execute(RealCall.java:92) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:411) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:372) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:337) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:318) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.BaseOperation.handleGet(BaseOperation.java:812) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:220) >>>>>> ... 7 more >>>>>> ------------------------------------------------------------ >>>>>> The program finished with the following exception: >>>>>> io.fabric8.kubernetes.client.KubernetesClientException: Operation: >>>>>> [get] for kind: [Service] with name: >>>>>> [flink-cluster-5c12bd50-a540-4614-96d0-549785a8bc62] in namespace: >>>>>> [default] failed. >>>>>> at >>>>>> io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:64) >>>>>> at >>>>>> io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:72) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:231) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:164) >>>>>> at >>>>>> org.apache.flink.kubernetes.kubeclient.Fabric8FlinkKubeClient.getService(Fabric8FlinkKubeClient.java:334) >>>>>> at >>>>>> org.apache.flink.kubernetes.kubeclient.Fabric8FlinkKubeClient.getInternalService(Fabric8FlinkKubeClient.java:246) >>>>>> at >>>>>> org.apache.flink.kubernetes.cli.KubernetesSessionCli.run(KubernetesSessionCli.java:104) >>>>>> at >>>>>> org.apache.flink.kubernetes.cli.KubernetesSessionCli.lambda$main$0(KubernetesSessionCli.java:185) >>>>>> at >>>>>> org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30) >>>>>> at >>>>>> org.apache.flink.kubernetes.cli.KubernetesSessionCli.main(KubernetesSessionCli.java:185) >>>>>> 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 org.apache.flink.kubernetes.shadded.okio.Okio$1.write(Okio.java:79) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okio.AsyncTimeout$1.write(AsyncTimeout.java:180) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okio.RealBufferedSink.flush(RealBufferedSink.java:224) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http2.Http2Writer.settings(Http2Writer.java:203) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http2.Http2Connection.start(Http2Connection.java:515) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http2.Http2Connection.start(Http2Connection.java:505) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.RealConnection.startHttp2(RealConnection.java:298) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:287) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.RealConnection.connect(RealConnection.java:168) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:257) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) >>>>>> at >>>>>> io.fabric8.kubernetes.client.utils.BackwardsCompatibilityInterceptor.intercept(BackwardsCompatibilityInterceptor.java:119) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) >>>>>> at >>>>>> io.fabric8.kubernetes.client.utils.ImpersonatorInterceptor.intercept(ImpersonatorInterceptor.java:68) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) >>>>>> at >>>>>> io.fabric8.kubernetes.client.utils.HttpClientUtils.lambda$createHttpClient$3(HttpClientUtils.java:112) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:254) >>>>>> at >>>>>> org.apache.flink.kubernetes.shadded.okhttp3.RealCall.execute(RealCall.java:92) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:411) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:372) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:337) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:318) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.BaseOperation.handleGet(BaseOperation.java:812) >>>>>> at >>>>>> io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:220) >>>>>> ... 7 more >>>>> >>>>> >>>>> [1] >>>>> https://ci.apache.org/projects/flink/flink-docs-master/ops/deployment/kubernetes.html >>>>> [2] >>>>> https://ci.apache.org/projects/flink/flink-docs-master/ops/deployment/native_kubernetes.html#start-flink-session >>>>> >>>>> Thanks, >>>>> >>>>> Dongwon >>>>> >>>>
