java.lang.Exception: The server rejected the connection: ntedtop-seven64 is already connected to this master. Rejecting this connection.

Jenkins JIRA | Grégoire Dupé | 2 years ago
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    Hello, I've vSphere slaves witch are "reverted" to a snapshot for each build. Those slaves are used to test the installation of our products. Some builds wait a long time at the beginning of the build before to crash with the following message: Remote build on slave-seven64 (x86_64 seven uiTest java7 autoRestored win x86)FATAL: channel is already closed hudson.remoting.ChannelClosedException: channel is already closed at hudson.remoting.Channel.send(Channel.java:541) at hudson.remoting.Request.call(Request.java:129) at hudson.remoting.Channel.call(Channel.java:739) at hudson.EnvVars.getRemote(EnvVars.java:404) at hudson.model.Computer.getEnvironment(Computer.java:927) at jenkins.model.CoreEnvironmentContributor.buildEnvironmentFor(CoreEnvironmentContributor.java:29) at hudson.model.Run.getEnvironment(Run.java:2248) at hudson.model.AbstractBuild.getEnvironment(AbstractBuild.java:905) at hudson.matrix.MatrixRun$MatrixRunExecution.decideWorkspace(MatrixRun.java:175) at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:517) at hudson.model.Run.execute(Run.java:1740) at hudson.matrix.MatrixRun.run(MatrixRun.java:146) at hudson.model.ResourceController.execute(ResourceController.java:89) at hudson.model.Executor.run(Executor.java:240) Caused by: java.io.IOException at hudson.remoting.Channel.close(Channel.java:1027) at hudson.slaves.ChannelPinger$1.onDead(ChannelPinger.java:110) at hudson.remoting.PingThread.ping(PingThread.java:120) at hudson.remoting.PingThread.run(PingThread.java:81) Caused by: java.util.concurrent.TimeoutException: Ping started on 1411030796694 hasn't completed at 1411031036694 ... 2 more The problem happens very often but it is not 100% reproducible. I've this problem with 2 different sets of computers. My slave configuration was working properly in a not so far past (about 6 months), but I don't know at witch jenkins update the problem appeared. Sometimes a blocked build is running in slave (according to the Jenkins UI) whereas the computer hosting the slave is down (according to the "vSphere Client"). I also found the following message in a log of a running slave on which a build was waiting before to crash: sept. 18, 2014 3:30:59 PM hudson.remoting.jnlp.Main$CuiListener error SEVERE: The server rejected the connection: ntedtop-seven64 is already connected to this master. Rejecting this connection. java.lang.Exception: The server rejected the connection: ntedtop-seven64 is already connected to this master. Rejecting this connection. at hudson.remoting.Engine.onConnectionRejected(Engine.java:286) at hudson.remoting.Engine.run(Engine.java:261) Is there a workaround for this problem. Regards, Grégoire

    Jenkins JIRA | 2 years ago | Grégoire Dupé
    java.lang.Exception: The server rejected the connection: ntedtop-seven64 is already connected to this master. Rejecting this connection.
  2. 0

    Hello, I've vSphere slaves witch are "reverted" to a snapshot for each build. Those slaves are used to test the installation of our products. Some builds wait a long time at the beginning of the build before to crash with the following message: Remote build on slave-seven64 (x86_64 seven uiTest java7 autoRestored win x86)FATAL: channel is already closed hudson.remoting.ChannelClosedException: channel is already closed at hudson.remoting.Channel.send(Channel.java:541) at hudson.remoting.Request.call(Request.java:129) at hudson.remoting.Channel.call(Channel.java:739) at hudson.EnvVars.getRemote(EnvVars.java:404) at hudson.model.Computer.getEnvironment(Computer.java:927) at jenkins.model.CoreEnvironmentContributor.buildEnvironmentFor(CoreEnvironmentContributor.java:29) at hudson.model.Run.getEnvironment(Run.java:2248) at hudson.model.AbstractBuild.getEnvironment(AbstractBuild.java:905) at hudson.matrix.MatrixRun$MatrixRunExecution.decideWorkspace(MatrixRun.java:175) at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:517) at hudson.model.Run.execute(Run.java:1740) at hudson.matrix.MatrixRun.run(MatrixRun.java:146) at hudson.model.ResourceController.execute(ResourceController.java:89) at hudson.model.Executor.run(Executor.java:240) Caused by: java.io.IOException at hudson.remoting.Channel.close(Channel.java:1027) at hudson.slaves.ChannelPinger$1.onDead(ChannelPinger.java:110) at hudson.remoting.PingThread.ping(PingThread.java:120) at hudson.remoting.PingThread.run(PingThread.java:81) Caused by: java.util.concurrent.TimeoutException: Ping started on 1411030796694 hasn't completed at 1411031036694 ... 2 more The problem happens very often but it is not 100% reproducible. I've this problem with 2 different sets of computers. My slave configuration was working properly in a not so far past (about 6 months), but I don't know at witch jenkins update the problem appeared. Sometimes a blocked build is running in slave (according to the Jenkins UI) whereas the computer hosting the slave is down (according to the "vSphere Client"). I also found the following message in a log of a running slave on which a build was waiting before to crash: sept. 18, 2014 3:30:59 PM hudson.remoting.jnlp.Main$CuiListener error SEVERE: The server rejected the connection: ntedtop-seven64 is already connected to this master. Rejecting this connection. java.lang.Exception: The server rejected the connection: ntedtop-seven64 is already connected to this master. Rejecting this connection. at hudson.remoting.Engine.onConnectionRejected(Engine.java:286) at hudson.remoting.Engine.run(Engine.java:261) Is there a workaround for this problem. Regards, Grégoire

    Jenkins JIRA | 2 years ago | Grégoire Dupé
    java.lang.Exception: The server rejected the connection: ntedtop-seven64 is already connected to this master. Rejecting this connection.
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    Jenkins CI server user discussion ()

    gmane.org | 7 months ago
    java.lang.Exception: The server rejected the connection: Unauthorized access

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    Root Cause Analysis

    1. java.lang.Exception

      The server rejected the connection: ntedtop-seven64 is already connected to this master. Rejecting this connection.

      at hudson.remoting.Engine.onConnectionRejected()
    2. Hudson :: Remoting Layer
      Engine.run
      1. hudson.remoting.Engine.onConnectionRejected(Engine.java:286)
      2. hudson.remoting.Engine.run(Engine.java:261)
      2 frames