May 18, 2023 3:20:06 PM hudson.Launcher$RemoteLaunchCallable$1 join
INFO: Failed to synchronize IO streams on the channel hudson.remoting.Channel@441bf04d:JNLP4-connect connection to xxxxx:50000
hudson.remoting.ChannelClosedException: Channel "hudson.remoting.Channel@441bf04d:JNLP4-connect connection to xxxxx:50000": Remote call on JNLP4-connect connection to xxxxx:50000 failed. The channel is closing down or has closed down
	at hudson.remoting.Channel.call(Channel.java:993)
	at hudson.remoting.Channel.syncIO(Channel.java:1732)
	at hudson.Launcher$RemoteLaunchCallable$1.join(Launcher.java:1411)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:924)
	at hudson.remoting.RemoteInvocationHandler$RPCRequest.call(RemoteInvocationHandler.java:902)
	at hudson.remoting.RemoteInvocationHandler$RPCRequest.call(RemoteInvocationHandler.java:853)
	at hudson.remoting.UserRequest.perform(UserRequest.java:211)
	at hudson.remoting.UserRequest.perform(UserRequest.java:54)
	at hudson.remoting.Request$2.run(Request.java:376)
	at hudson.remoting.InterceptingExecutorService.lambda$wrap$0(InterceptingExecutorService.java:78)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:125)
	at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.nio.channels.ClosedChannelException
	at org.jenkinsci.remoting.protocol.NetworkLayer.onRecvClosed(NetworkLayer.java:155)
	at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer.access$1000(BIONetworkLayer.java:51)
	at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer$Reader.run(BIONetworkLayer.java:274)
	... 4 more

May 18, 2023 3:20:06 PM hudson.remoting.Request$2 run
INFO: Failed to send back a reply to the request UserRequest:UserRPCRequest:hudson.Launcher$RemoteProcess.join[](11): hudson.remoting.ChannelClosedException: Channel "hudson.remoting.Channel@441bf04d:JNLP4-connect connection to xxxxx:50000": channel is already closed
May 18, 2023 3:20:16 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Performing onReconnect operation.
May 18, 2023 3:20:16 PM jenkins.slaves.restarter.JnlpSlaveRestarterInstaller$EngineListenerAdapterImpl onReconnect
INFO: Restarting agent via jenkins.slaves.restarter.UnixSlaveRestarter@52fde517
May 18, 2023 3:20:18 PM hudson.remoting.jnlp.Main createEngine
INFO: Setting up agent: maven-roks-remote-zv9tt
May 18, 2023 3:20:18 PM hudson.remoting.Engine startEngine
INFO: Using Remoting version: 3044.vb_940a_a_e4f72e
May 18, 2023 3:20:18 PM hudson.remoting.Engine startEngine
WARNING: No Working Directory. Using the legacy JAR Cache location: /home/jenkins/.jenkins/cache/jars
May 18, 2023 3:20:18 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Locating server among [http://xxx.xxx.xxx.xxx:8080/]
May 18, 2023 3:20:18 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver resolve
INFO: Remoting server accepts the following protocols: [JNLP4-connect, Ping]
May 18, 2023 3:20:18 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver resolve
INFO: Remoting TCP connection tunneling is enabled. Skipping the TCP Agent Listener Port availability check
May 18, 2023 3:20:18 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Agent discovery successful
  Agent address: xxx.xxx.xxx.xxx
  Agent port:    50000
  Identity:      xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx
May 18, 2023 3:20:18 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Handshaking
May 18, 2023 3:20:18 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connecting to xxx.xxx.xxx.xxx:50000
May 18, 2023 3:20:18 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Trying protocol: JNLP4-connect
May 18, 2023 3:20:19 PM org.jenkinsci.remoting.protocol.impl.BIONetworkLayer$Reader run
INFO: Waiting for ProtocolStack to start.
May 18, 2023 3:20:19 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Remote identity confirmed: xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx
May 18, 2023 3:20:19 PM org.jenkinsci.remoting.protocol.impl.ConnectionHeadersFilterLayer onRecv
INFO: [JNLP4-connect connection to xxxxx:50000] Local headers refused by remote: maven-roks-remote-zv9tt is already connected to this controller. Rejecting this connection.
May 18, 2023 3:20:19 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Protocol JNLP4-connect encountered an unexpected exception
java.util.concurrent.ExecutionException: org.jenkinsci.remoting.protocol.impl.ConnectionRefusalException: maven-roks-remote-zv9tt is already connected to this controller. Rejecting this connection.
	at org.jenkinsci.remoting.util.SettableFuture.get(SettableFuture.java:223)
	at hudson.remoting.Engine.innerRun(Engine.java:798)
	at hudson.remoting.Engine.run(Engine.java:543)
Caused by: org.jenkinsci.remoting.protocol.impl.ConnectionRefusalException: maven-roks-remote-zv9tt is already connected to this controller. Rejecting this connection.
	at org.jenkinsci.remoting.protocol.impl.ConnectionHeadersFilterLayer.newAbortCause(ConnectionHeadersFilterLayer.java:380)
	at org.jenkinsci.remoting.protocol.impl.ConnectionHeadersFilterLayer.onRecvClosed(ConnectionHeadersFilterLayer.java:435)
	at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecvClosed(ProtocolStack.java:825)
	at org.jenkinsci.remoting.protocol.FilterLayer.onRecvClosed(FilterLayer.java:289)
	at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.onRecvClosed(SSLEngineFilterLayer.java:168)
	at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecvClosed(ProtocolStack.java:825)
	at org.jenkinsci.remoting.protocol.NetworkLayer.onRecvClosed(NetworkLayer.java:155)
	at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer.access$700(BIONetworkLayer.java:51)
	at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer$Reader.run(BIONetworkLayer.java:257)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:125)
	at java.base/java.lang.Thread.run(Thread.java:829)
	Suppressed: java.nio.channels.ClosedChannelException
		... 7 more

May 18, 2023 3:20:19 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: reconnect rejected, sleeping 10s: 
java.lang.Exception: The server rejected the connection: None of the protocols were accepted
	at hudson.remoting.Engine.onConnectionRejected(Engine.java:877)
	at hudson.remoting.Engine.innerRun(Engine.java:824)
	at hudson.remoting.Engine.run(Engine.java:543)