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Bug
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Resolution: Cannot Reproduce
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Major
After restarting the master for plugin upgrades the agent fails to reconnect
master logs
Mar 06, 2018 4:50:23 PM jenkins.model.Jenkins$24 run SEVERE: Restarting VM as requested by xxx Mar 06, 2018 4:50:23 PM jenkins.model.Jenkins cleanUp INFO: Stopping Jenkins Mar 06, 2018 4:50:23 PM jenkins.model.Jenkins$19 onAttained INFO: Started termination Mar 06, 2018 4:50:23 PM jenkins.model.Jenkins$19 onAttained INFO: Completed termination Mar 06, 2018 4:50:23 PM jenkins.model.Jenkins _cleanUpDisconnectComputers INFO: Starting node disconnection Mar 06, 2018 4:50:23 PM jenkins.slaves.DefaultJnlpSlaveReceiver channelClosed WARNING: safe-restart thread for artifact-manager-s3-c7701-0rmp3 terminated java.nio.channels.ClosedChannelException at org.jenkinsci.remoting.protocol.impl.ChannelApplicationLayer.onReadClosed(ChannelApplicationLayer.java:208) at org.jenkinsci.remoting.protocol.ApplicationLayer.onRecvClosed(ApplicationLayer.java:222) at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecvClosed(ProtocolStack.java:832) at org.jenkinsci.remoting.protocol.FilterLayer.onRecvClosed(FilterLayer.java:287) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.onRecvClosed(SSLEngineFilterLayer.java:181) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.switchToNoSecure(SSLEngineFilterLayer.java:283) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.processWrite(SSLEngineFilterLayer.java:503) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.processQueuedWrites(SSLEngineFilterLayer.java:248) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.doSend(SSLEngineFilterLayer.java:200) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.doCloseSend(SSLEngineFilterLayer.java:213) at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.doCloseSend(ProtocolStack.java:800) at org.jenkinsci.remoting.protocol.ApplicationLayer.doCloseWrite(ApplicationLayer.java:173) at org.jenkinsci.remoting.protocol.impl.ChannelApplicationLayer$ByteBufferCommandTransport.closeWrite(ChannelApplicationLayer.java:311) at hudson.remoting.Channel.close(Channel.java:1405) at hudson.remoting.Channel.close(Channel.java:1358) at hudson.slaves.SlaveComputer.closeChannel(SlaveComputer.java:737) at hudson.slaves.SlaveComputer.kill(SlaveComputer.java:704) at hudson.model.AbstractCIBase.killComputer(AbstractCIBase.java:88) at jenkins.model.Jenkins.access$2000(Jenkins.java:304) at jenkins.model.Jenkins$20.run(Jenkins.java:3367) at hudson.model.Queue._withLock(Queue.java:1373) at hudson.model.Queue.withLock(Queue.java:1250) at jenkins.model.Jenkins._cleanUpDisconnectComputers(Jenkins.java:3361) at jenkins.model.Jenkins.cleanUp(Jenkins.java:3237) at hudson.lifecycle.UnixLifecycle.restart(UnixLifecycle.java:73) at jenkins.model.Jenkins$24.run(Jenkins.java:4218) Mar 06, 2018 4:50:24 PM jenkins.model.Jenkins _cleanUpShutdownPluginManager INFO: Stopping plugin manager Mar 06, 2018 4:50:24 PM jenkins.model.Jenkins _cleanUpPersistQueue INFO: Persisting build queue Mar 06, 2018 4:50:24 PM jenkins.model.Jenkins _cleanUpAwaitDisconnects INFO: Waiting for node disconnection completion Mar 06, 2018 4:50:24 PM jenkins.model.Jenkins cleanUp INFO: Jenkins stopped VM settings: Max. Heap Size: 4.00G Ergonomics Machine Class: server Using VM: OpenJDK 64-Bit Server VM Running from: /usr/share/jenkins/jenkins.war webroot: EnvVars.masterEnvVars.get("JENKINS_HOME") Mar 06, 2018 4:50:27 PM Main deleteWinstoneTempContents WARNING: Failed to delete the temporary Winstone file /tmp/winstone/jenkins.war Mar 06, 2018 4:50:27 PM org.eclipse.jetty.util.log.Log initialized INFO: Logging initialized @1153ms to org.eclipse.jetty.util.log.JavaUtilLog Mar 06, 2018 4:50:28 PM winstone.Logger logInternal INFO: Beginning extraction from war file Mar 06, 2018 4:50:28 PM org.eclipse.jetty.server.handler.ContextHandler setContextPath WARNING: Empty contextPath Mar 06, 2018 4:50:28 PM org.eclipse.jetty.server.Server doStart INFO: jetty-9.4.z-SNAPSHOT Mar 06, 2018 4:50:29 PM org.eclipse.jetty.webapp.StandardDescriptorProcessor visitServlet INFO: NO JSP Support for /, did not find org.eclipse.jetty.jsp.JettyJspServlet Mar 06, 2018 4:50:29 PM org.eclipse.jetty.server.session.DefaultSessionIdManager doStart INFO: DefaultSessionIdManager workerName=node0 Mar 06, 2018 4:50:29 PM org.eclipse.jetty.server.session.DefaultSessionIdManager doStart INFO: No SessionScavenger set, using defaults Mar 06, 2018 4:50:29 PM org.eclipse.jetty.server.session.HouseKeeper startScavenging INFO: Scavenging every 660000ms Jenkins home directory: /var/jenkins_home found at: EnvVars.masterEnvVars.get("JENKINS_HOME") Mar 06, 2018 4:50:30 PM org.eclipse.jetty.server.handler.ContextHandler doStart INFO: Started w.@239a307b{/,file:///var/jenkins_home/war/,AVAILABLE}{/var/jenkins_home/war} Mar 06, 2018 4:50:30 PM org.eclipse.jetty.server.AbstractConnector doStart INFO: Started ServerConnector@30f842ca{HTTP/1.1,[http/1.1]}{0.0.0.0:8080} Mar 06, 2018 4:50:30 PM org.eclipse.jetty.server.Server doStart INFO: Started @4439ms Mar 06, 2018 4:50:30 PM winstone.Logger logInternal INFO: Winstone Servlet Engine v4.0 running: controlPort=disabled Mar 06, 2018 4:50:33 PM jenkins.InitReactorRunner$1 onAttained INFO: Started initialization Mar 06, 2018 4:50:35 PM jenkins.InitReactorRunner$1 onAttained INFO: Listed all plugins // here kubernetes killed jenkins pod because Liveness probe failed $ kubectl logs -f jenkins-0 VM settings: Max. Heap Size: 4.00G Ergonomics Machine Class: server Using VM: OpenJDK 64-Bit Server VM Running from: /usr/share/jenkins/jenkins.war webroot: EnvVars.masterEnvVars.get("JENKINS_HOME") Mar 06, 2018 4:50:54 PM Main deleteWinstoneTempContents WARNING: Failed to delete the temporary Winstone file /tmp/winstone/jenkins.war Mar 06, 2018 4:50:54 PM org.eclipse.jetty.util.log.Log initialized INFO: Logging initialized @1119ms to org.eclipse.jetty.util.log.JavaUtilLog Mar 06, 2018 4:50:54 PM winstone.Logger logInternal INFO: Beginning extraction from war file Mar 06, 2018 4:50:54 PM org.eclipse.jetty.server.handler.ContextHandler setContextPath WARNING: Empty contextPath Mar 06, 2018 4:50:54 PM org.eclipse.jetty.server.Server doStart INFO: jetty-9.4.z-SNAPSHOT Mar 06, 2018 4:50:55 PM org.eclipse.jetty.webapp.StandardDescriptorProcessor visitServlet INFO: NO JSP Support for /, did not find org.eclipse.jetty.jsp.JettyJspServlet Mar 06, 2018 4:50:56 PM org.eclipse.jetty.server.session.DefaultSessionIdManager doStart INFO: DefaultSessionIdManager workerName=node0 Mar 06, 2018 4:50:56 PM org.eclipse.jetty.server.session.DefaultSessionIdManager doStart INFO: No SessionScavenger set, using defaults Mar 06, 2018 4:50:56 PM org.eclipse.jetty.server.session.HouseKeeper startScavenging INFO: Scavenging every 600000ms Jenkins home directory: /var/jenkins_home found at: EnvVars.masterEnvVars.get("JENKINS_HOME") Mar 06, 2018 4:50:57 PM org.eclipse.jetty.server.handler.ContextHandler doStart INFO: Started w.@239a307b{/,file:///var/jenkins_home/war/,AVAILABLE}{/var/jenkins_home/war} Mar 06, 2018 4:50:57 PM org.eclipse.jetty.server.AbstractConnector doStart INFO: Started ServerConnector@30f842ca{HTTP/1.1,[http/1.1]}{0.0.0.0:8080} Mar 06, 2018 4:50:57 PM org.eclipse.jetty.server.Server doStart INFO: Started @4295ms Mar 06, 2018 4:50:57 PM winstone.Logger logInternal INFO: Winstone Servlet Engine v4.0 running: controlPort=disabled Mar 06, 2018 4:50:59 PM jenkins.InitReactorRunner$1 onAttained INFO: Started initialization Mar 06, 2018 4:51:00 PM jenkins.InitReactorRunner$1 onAttained INFO: Listed all plugins Mar 06, 2018 4:51:21 PM jenkins.InitReactorRunner$1 onAttained INFO: Prepared all plugins Mar 06, 2018 4:51:21 PM jenkins.InitReactorRunner$1 onAttained INFO: Started all plugins Mar 06, 2018 4:51:23 PM hudson.ExtensionFinder$GuiceFinder$FaultTolerantScope$1 error INFO: Failed to instantiate optional component hudson.plugins.build_timeout.operations.AbortAndRestartOperation$DescriptorImpl; skipping Mar 06, 2018 4:51:26 PM jenkins.InitReactorRunner$1 onAttained INFO: Augmented all extensions Mar 06, 2018 4:51:27 PM org.csanchez.jenkins.plugins.kubernetes.KubernetesLauncher launch INFO: Agent has already been launched, activating: {} Mar 06, 2018 4:51:28 PM jenkins.InitReactorRunner$1 onAttained INFO: Loaded all jobs Mar 06, 2018 4:51:28 PM jenkins.util.groovy.GroovyHookScript execute INFO: Executing /var/jenkins_home/init.groovy.d/tcp-slave-agent-port.groovy Mar 06, 2018 4:51:29 PM hudson.model.AsyncPeriodicWork$1 run INFO: Started Download metadata Mar 06, 2018 4:51:29 PM hudson.model.AsyncPeriodicWork$1 run INFO: Finished Download metadata. 91 ms Mar 06, 2018 4:51:30 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh INFO: Refreshing org.springframework.web.context.support.StaticWebApplicationContext@5ef7d416: display name [Root WebApplicationContext]; startup date [Tue Mar 06 16:51:30 GMT 2018]; root of context hierarchy Mar 06, 2018 4:51:30 PM org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory INFO: Bean factory for application context [org.springframework.web.context.support.StaticWebApplicationContext@5ef7d416]: org.springframework.beans.factory.support.DefaultListableBeanFactory@3f128517 Mar 06, 2018 4:51:30 PM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@3f128517: defining beans [filter,legacy]; root of factory hierarchy Mar 06, 2018 4:51:30 PM jenkins.InitReactorRunner$1 onAttained INFO: Completed initialization Mar 06, 2018 4:51:34 PM hudson.WebAppMain$3 run INFO: Jenkins is fully up and running --> setting agent port for jnlp --> setting agent port for jnlp... done Mar 06, 2018 4:52:16 PM hudson.TcpSlaveAgentListener$ConnectionHandler run INFO: Accepted JNLP4-connect connection #1 from /100.96.6.38:47260 Mar 06, 2018 4:52:25 PM org.csanchez.jenkins.plugins.kubernetes.KubernetesSlave _terminate INFO: Terminating Kubernetes instance for agent artifact-manager-s3-c7701-0rmp3 Mar 06, 2018 4:52:25 PM jenkins.slaves.DefaultJnlpSlaveReceiver channelClosed WARNING: Computer.threadPoolForRemoting [#9] for artifact-manager-s3-c7701-0rmp3 terminated java.nio.channels.ClosedChannelException at org.jenkinsci.remoting.protocol.impl.ChannelApplicationLayer.onReadClosed(ChannelApplicationLayer.java:208) at org.jenkinsci.remoting.protocol.ApplicationLayer.onRecvClosed(ApplicationLayer.java:222) at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecvClosed(ProtocolStack.java:832) at org.jenkinsci.remoting.protocol.FilterLayer.onRecvClosed(FilterLayer.java:287) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.onRecvClosed(SSLEngineFilterLayer.java:181) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.switchToNoSecure(SSLEngineFilterLayer.java:283) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.processWrite(SSLEngineFilterLayer.java:503) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.processQueuedWrites(SSLEngineFilterLayer.java:248) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.doSend(SSLEngineFilterLayer.java:200) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.doCloseSend(SSLEngineFilterLayer.java:213) at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.doCloseSend(ProtocolStack.java:800) at org.jenkinsci.remoting.protocol.ApplicationLayer.doCloseWrite(ApplicationLayer.java:173) at org.jenkinsci.remoting.protocol.impl.ChannelApplicationLayer$ByteBufferCommandTransport.closeWrite(ChannelApplicationLayer.java:311) at hudson.remoting.Channel.close(Channel.java:1405) at hudson.remoting.Channel.close(Channel.java:1358) at hudson.slaves.SlaveComputer.closeChannel(SlaveComputer.java:737) at hudson.slaves.SlaveComputer.access$800(SlaveComputer.java:96) at hudson.slaves.SlaveComputer$3.run(SlaveComputer.java:655) at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Mar 06, 2018 4:52:25 PM hudson.remoting.Request$2 run WARNING: Failed to send back a reply to the request hudson.remoting.Request$2@78147134 hudson.remoting.ChannelClosedException: channel is already closed at hudson.remoting.Channel.send(Channel.java:671) at hudson.remoting.Request$2.run(Request.java:370) at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72) at org.jenkinsci.remoting.CallableDecorator.call(CallableDecorator.java:19) at hudson.remoting.CallableDecoratorList$1.call(CallableDecoratorList.java:21) at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.nio.channels.ClosedChannelException at org.jenkinsci.remoting.protocol.impl.ChannelApplicationLayer.onReadClosed(ChannelApplicationLayer.java:208) at org.jenkinsci.remoting.protocol.ApplicationLayer.onRecvClosed(ApplicationLayer.java:222) at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecvClosed(ProtocolStack.java:832) at org.jenkinsci.remoting.protocol.FilterLayer.onRecvClosed(FilterLayer.java:287) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.onRecvClosed(SSLEngineFilterLayer.java:181) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.switchToNoSecure(SSLEngineFilterLayer.java:283) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.processWrite(SSLEngineFilterLayer.java:503) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.processQueuedWrites(SSLEngineFilterLayer.java:248) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.doSend(SSLEngineFilterLayer.java:200) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.doCloseSend(SSLEngineFilterLayer.java:213) at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.doCloseSend(ProtocolStack.java:800) at org.jenkinsci.remoting.protocol.ApplicationLayer.doCloseWrite(ApplicationLayer.java:173) at org.jenkinsci.remoting.protocol.impl.ChannelApplicationLayer$ByteBufferCommandTransport.closeWrite(ChannelApplicationLayer.java:311) at hudson.remoting.Channel.close(Channel.java:1405) at hudson.remoting.Channel.close(Channel.java:1358) at hudson.slaves.SlaveComputer.closeChannel(SlaveComputer.java:737) at hudson.slaves.SlaveComputer.access$800(SlaveComputer.java:96) at hudson.slaves.SlaveComputer$3.run(SlaveComputer.java:655) at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ... 4 more Mar 06, 2018 4:52:25 PM org.csanchez.jenkins.plugins.kubernetes.pipeline.PodTemplateStepExecution$PodTemplateCallback finished INFO: Removing pod template and deleting pod artifact-manager-s3-c7701 from cloud kubernetes Mar 06, 2018 4:52:27 PM okhttp3.internal.platform.Platform log INFO: ALPN callback dropped: HTTP/2 is disabled. Is alpn-boot on the boot class path? Mar 06, 2018 4:52:27 PM okhttp3.internal.platform.Platform log INFO: ALPN callback dropped: HTTP/2 is disabled. Is alpn-boot on the boot class path? Mar 06, 2018 4:52:27 PM org.csanchez.jenkins.plugins.kubernetes.KubernetesSlave _terminate INFO: Terminated Kubernetes instance for agent jenkins/artifact-manager-s3-c7701-0rmp3 Terminated Kubernetes instance for agent jenkins/artifact-manager-s3-c7701-0rmp3 Mar 06, 2018 4:52:27 PM org.csanchez.jenkins.plugins.kubernetes.KubernetesSlave _terminate INFO: Disconnected computer artifact-manager-s3-c7701-0rmp3 Mar 06, 2018 4:52:27 PM org.csanchez.jenkins.plugins.kubernetes.pipeline.PodTemplateStepExecution$PodTemplateCallback finished WARNING: Failed to delete pod for agent jenkins/artifact-manager-s3-c7701: not found Mar 06, 2018 4:52:27 PM org.jenkinsci.plugins.workflow.job.WorkflowRun finish INFO: test #2 completed: FAILURE
agent logs
Mar 06, 2018 4:41:48 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Connected Mar 06, 2018 4:50:23 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Terminated Mar 06, 2018 4:50:33 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver waitForReady INFO: Master isn't ready to talk to us on http://jenkins/tcpSlaveAgentListener/. Will try again: response code=503 Mar 06, 2018 4:50:48 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver waitForReady INFO: Failed to connect to the master. Will try again: java.net.SocketTimeoutException connect timed out Mar 06, 2018 4:51:03 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver waitForReady INFO: Failed to connect to the master. Will try again: java.net.SocketTimeoutException connect timed out Mar 06, 2018 4:51:18 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver waitForReady INFO: Failed to connect to the master. Will try again: java.net.SocketTimeoutException connect timed out Mar 06, 2018 4:51:33 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver waitForReady INFO: Failed to connect to the master. Will try again: java.net.SocketTimeoutException connect timed out Mar 06, 2018 4:51:48 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver waitForReady INFO: Failed to connect to the master. Will try again: java.net.SocketTimeoutException connect timed out Mar 06, 2018 4:52:03 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver waitForReady INFO: Failed to connect to the master. Will try again: java.net.SocketTimeoutException connect timed out Mar 06, 2018 4:52:13 PM jenkins.slaves.restarter.JnlpSlaveRestarterInstaller$2$1 onReconnect INFO: Restarting agent via jenkins.slaves.restarter.UnixSlaveRestarter@2d4c4c79 Mar 06, 2018 4:52:15 PM hudson.remoting.jnlp.Main createEngine INFO: Setting up agent: artifact-manager-s3-c7701-0rmp3 Mar 06, 2018 4:52:15 PM hudson.remoting.jnlp.Main$CuiListener <init> INFO: Jenkins agent is running in headless mode. Mar 06, 2018 4:52:15 PM hudson.remoting.Engine startEngine WARNING: No Working Directory. Using the legacy JAR Cache location: /home/jenkins/.jenkins/cache/jars Mar 06, 2018 4:52:15 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Locating server among [http://jenkins/] Mar 06, 2018 4:52:15 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver resolve INFO: Remoting server accepts the following protocols: [JNLP4-connect, Ping] Mar 06, 2018 4:52:15 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Agent discovery successful Agent address: jenkins Agent port: 50000 Identity: 6b:d5:db:ec:8b:c9:46:b3:00:40:72:91:da:6f:6c:31 Mar 06, 2018 4:52:15 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Handshaking Mar 06, 2018 4:52:15 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Connecting to jenkins:50000 Mar 06, 2018 4:52:15 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Trying protocol: JNLP4-connect Mar 06, 2018 4:52:16 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Remote identity confirmed: 6b:d5:db:ec:8b:c9:46:b3:00:40:72:91:da:6f:6c:31 Mar 06, 2018 4:52:17 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Connected Mar 06, 2018 4:52:25 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Terminated Mar 06, 2018 4:52:25 PM hudson.remoting.Request$2 run WARNING: Failed to send back a reply to the request hudson.remoting.Request$2@4fbffa99 hudson.remoting.ChannelClosedException: Channel "hudson.remoting.Channel@452b851a:JNLP4-connect connection to jenkins/100.67.180.57:50000": channel is already closed at hudson.remoting.Channel.send(Channel.java:672) at hudson.remoting.Request$2.run(Request.java:371) at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at hudson.remoting.Engine$1$1.run(Engine.java:94) at java.lang.Thread.run(Thread.java:748) Caused by: hudson.remoting.Channel$OrderlyShutdown: Command close created at at hudson.remoting.Channel$CloseCommand.execute(Channel.java:1226) at hudson.remoting.Channel$1.handle(Channel.java:561) at hudson.remoting.AbstractByteBufferCommandTransport.processCommand(AbstractByteBufferCommandTransport.java:202) at hudson.remoting.AbstractByteBufferCommandTransport.receive(AbstractByteBufferCommandTransport.java:188) at org.jenkinsci.remoting.protocol.impl.ChannelApplicationLayer.onRead(ChannelApplicationLayer.java:186) at org.jenkinsci.remoting.protocol.ApplicationLayer.onRecv(ApplicationLayer.java:207) at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecv(ProtocolStack.java:669) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.processRead(SSLEngineFilterLayer.java:369) at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.onRecv(SSLEngineFilterLayer.java:117) at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecv(ProtocolStack.java:669) at org.jenkinsci.remoting.protocol.NetworkLayer.onRead(NetworkLayer.java:136) at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer.access$2200(BIONetworkLayer.java:48) at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer$Reader.run(BIONetworkLayer.java:283) ... 4 more Caused by: Command close created at at hudson.remoting.Command.<init>(Command.java:60) at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:1219) at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:1217) at hudson.remoting.Channel.close(Channel.java:1391) at hudson.remoting.Channel.close(Channel.java:1358) at hudson.slaves.SlaveComputer.closeChannel(SlaveComputer.java:737) at hudson.slaves.SlaveComputer.access$800(SlaveComputer.java:96) at hudson.slaves.SlaveComputer$3.run(SlaveComputer.java:655) at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ... 1 more