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Bug
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Resolution: Unresolved
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Major
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None
After upgrade Jenkins master to 2.289.2, Windows agent can't connect to the controller. On the controller, the TCP port for jnlp is fixed port 8888, the port is open to the Windows machine.
When I run this command "java -jar agent.jar -jnlpUrl https://jenkins-master/computer/test-windows-agent/jenkins-agent.jnlp -secret *** -workDir "c:\jenkins"" on the Windows machine, and run a 'tcpdump" command on the Jenkins master, I saw the tcp packet coming in.
A "netstat" command on the Jenkins master shows the java app is listening on port 8888.
The result of the launch command from above is as following, Java 8 is in use on both controller and the Windows machine.
Jul 06, 2021 8:10:07 AM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
INFO: Using c:\jenkins\remoting as a remoting work directory
Jul 06, 2021 8:10:07 AM org.jenkinsci.remoting.engine.WorkDirManager setupLogging
INFO: Both error and output logs will be printed to c:\jenkins\remoting
Jul 06, 2021 8:10:10 AM hudson.remoting.jnlp.Main createEngine
INFO: Setting up agent: bella-test-windows-agent
Jul 06, 2021 8:10:10 AM hudson.remoting.jnlp.Main$CuiListener <init>
INFO: Jenkins agent is running in headless mode.
Jul 06, 2021 8:10:10 AM hudson.remoting.Engine startEngine
INFO: Using Remoting version: 4.7
Jul 06, 2021 8:10:10 AM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
INFO: Using c:\jenkins\remoting as a remoting work directory
Jul 06, 2021 8:10:11 AM hudson.remoting.jnlp.Main$CuiListener error
SEVERE: Handshake error.
io.jenkins.remoting.shaded.javax.websocket.DeploymentException: Handshake error.
at io.jenkins.remoting.shaded.org.glassfish.tyrus.client.ClientManager$3$1.run(ClientManager.java:658)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.client.ClientManager$3.run(ClientManager.java:696)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.client.ClientManager$SameThreadExecutorService.execute(ClientManager.java:849)
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.client.ClientManager.connectToServer(ClientManager.java:493)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.client.ClientManager.connectToServer(ClientManager.java:337)
at hudson.remoting.Engine.runWebSocket(Engine.java:623)
at hudson.remoting.Engine.run(Engine.java:470)
Caused by: io.jenkins.remoting.shaded.org.glassfish.tyrus.core.HandshakeException: Response code was not 101: 400.
at io.jenkins.remoting.shaded.org.glassfish.tyrus.client.TyrusClientEngine.processResponse(TyrusClientEngine.java:299)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.container.jdk.client.ClientFilter.processRead(ClientFilter.java:167)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.container.jdk.client.Filter.onRead(Filter.java:111)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.container.jdk.client.Filter.onRead(Filter.java:113)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.container.jdk.client.SslFilter.handleRead(SslFilter.java:383)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.container.jdk.client.SslFilter.processRead(SslFilter.java:345)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.container.jdk.client.Filter.onRead(Filter.java:111)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.container.jdk.client.Filter.onRead(Filter.java:113)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.container.jdk.client.TransportFilter$4.completed(TransportFilter.java:294)
at io.jenkins.remoting.shaded.org.glassfish.tyrus.container.jdk.client.TransportFilter$4.completed(TransportFilter.java:278)
at sun.nio.ch.Invoker.invokeUnchecked(Unknown Source)
at sun.nio.ch.Invoker$2.run(Unknown Source)
at sun.nio.ch.AsynchronousChannelGroupImpl$1.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Please advise what else I can do to troubleshoot. Thanks.