Hi,
I’m facing issue with a Jenkins agent running on a Windows 2022 machine is intermittently disconnecting from the Jenkins server. The agent initially connects successfully, but the connection is terminated after a short period. The error messages on both the server and agent indicate connection issues, but the exact cause remains unclear.
Windows Logs: jenkins-agent.err.log:
Aug 31, 2024 8:05:24 AM io.jenkins.remoting.shaded.org.glassfish.tyrus.container.jdk.client.ClientFilter processError
SEVERE: Connection error has occurred
java.io.IOException: The I/O operation has been aborted because of either a thread exit or an application request
** at java.base/sun.nio.ch.Iocp.translateErrorToIOException(Iocp.java:299)**
** at java.base/sun.nio.ch.Iocp$EventHandlerTask.run(Iocp.java:389)**
** at java.base/java.lang.Thread.run(Thread.java:840)**
Aug 31, 2024 8:05:24 AM hudson.remoting.Launcher$CuiListener status
INFO: Read side closed
Aug 31, 2024 8:05:24 AM hudson.remoting.Launcher$CuiListener status
INFO: Terminated
Aug 31, 2024 8:05:35 AM hudson.remoting.Launcher$CuiListener status
INFO: Performing onReconnect operation.
Aug 31, 2024 8:05:35 AM jenkins.slaves.restarter.JnlpSlaveRestarterInstaller$EngineListenerAdapterImpl onReconnect
INFO: Restarting agent via jenkins.slaves.restarter.WinswSlaveRestarter@24a85935
Aug 31, 2024 8:05:37 AM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
INFO: Using C:\jenkins\remoting as a remoting work directory
Aug 31, 2024 8:05:37 AM org.jenkinsci.remoting.engine.WorkDirManager setupLogging
INFO: Both error and output logs will be printed to C:\jenkins\remoting
Aug 31, 2024 8:05:37 AM hudson.remoting.Launcher createEngine
INFO: Setting up agent: itf-ja48asuc-95
Aug 31, 2024 8:05:37 AM hudson.remoting.Engine startEngine
INFO: Using Remoting version: 3248.3250.v3277a_8e88c9b_
Aug 31, 2024 8:05:37 AM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
INFO: Using C:\jenkins\remoting as a remoting work directory
Aug 31, 2024 8:05:37 AM hudson.remoting.Launcher$CuiListener status
INFO: WebSocket connection open
Aug 31, 2024 8:05:37 AM hudson.remoting.Launcher$CuiListener status
INFO: Connected
In jenkins console log:
Cannot contact : hudson.remoting.ChannelClosedException: Channel “hudson.remoting.Channel@1a8e489b:”: Remote call on failed. The channel is closing down or has closed down
On jenkins Machine: JENKINS_HOME/logs/slaves/machine/agent.log
Inbound agent connected from 10.228.200.21
Remoting version: 3248.3250.v3277a_8e88c9b_
Launcher: JNLPLauncher
Communication Protocol: WebSocket
This is a Windows agent
Agent successfully connected and online
ERROR: Connection terminated
java.nio.channels.ClosedChannelException
at jenkins.agents.WebSocketAgents$Session.closed(WebSocketAgents.java:157)
at jenkins.websocket.WebSockets$1.onWebSocketClose(WebSockets.java:99)
at jenkins.websocket.WebSockets$1.onWebSocketError(WebSockets.java:105)
at jenkins.websocket.Jetty10Provider$2.onWebSocketError(Jetty10Provider.java:174)
at Jenkins Main ClassLoader//org.eclipse.jetty.websocket.common.JettyWebSocketFrameHandler.onError(JettyWebSocketFrameHandler.java:261)
at Jenkins Main ClassLoader//org.eclipse.jetty.websocket.core.internal.WebSocketCoreSession.lambda$closeConnection$2(WebSocketCoreSession.java:284)
at Jenkins Main ClassLoader//org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1469)
at Jenkins Main ClassLoader//org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1488)
at Jenkins Main ClassLoader//org.eclipse.jetty.websocket.core.server.internal.AbstractHandshaker$1.handle(AbstractHandshaker.java:212)
at Jenkins Main ClassLoader//org.eclipse.jetty.websocket.core.internal.WebSocketCoreSession.closeConnection(WebSocketCoreSession.java:284)
at Jenkins Main ClassLoader//org.eclipse.jetty.websocket.core.internal.WebSocketCoreSession.onEof(WebSocketCoreSession.java:254)
at Jenkins Main ClassLoader//org.eclipse.jetty.websocket.core.internal.WebSocketConnection.fillAndParse(WebSocketConnection.java:491)
at Jenkins Main ClassLoader//org.eclipse.jetty.websocket.core.internal.WebSocketConnection.onFillable(WebSocketConnection.java:349)
at Jenkins Main ClassLoader//org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:314)
at Jenkins Main ClassLoader//org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
at Jenkins Main ClassLoader//org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)
at Jenkins Main ClassLoader//org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:421)
at Jenkins Main ClassLoader//org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:390)
at Jenkins Main ClassLoader//org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:277)
at Jenkins Main ClassLoader//org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:199)
at Jenkins Main ClassLoader//org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:411)
at Jenkins Main ClassLoader//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:969)
at Jenkins Main ClassLoader//org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1194)
at Jenkins Main ClassLoader//org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1149)
at java.base/java.lang.Thread.run(Thread.java:840)
ERROR: Connection terminated