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  1. Jenkins
  2. JENKINS-69540

Windows Agents getting disconnected after jenkins restart

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: Critical Critical
    • ec2-plugin
    • None

      Jenkins 2.346.1

      EC2 plugin version - 2.0.1 

      Windows Agents are hanging at the following after Jenkins restart
      Sep 07, 2022 12:08:47 AM hudson.plugins.ec2.EC2Cloud
      INFO: Copying remoting.jar to: c:/windows/temp

      We tried debugging, but logs didn't indicate anything. This happens 100% of the time and only to windows agents.

      After deleting the Agent and recreating new one, it is able to connect to the master. Please note that Windows agents are hanging after Jenkins restart and they cannot reattach.

      We haven't noticed same issue happening for Linux agents.

      Agent config:
      <hudson.plugins.ec2.EC2Slave plugin="ec2@2.0.1">
      <name>EC2 (EC2 Agent) - WinAgent (i-xxxxxxxxx)</name>
      <remoteFS>C:\jenkins</remoteFS>
      <numExecutors>1</numExecutors>
      <mode>EXCLUSIVE</mode>
      <retentionStrategy class="hudson.plugins.ec2.EC2RetentionStrategy">
      <nextCheckAfter>-1</nextCheckAfter>
      <idleTerminationMinutes>180</idleTerminationMinutes>
      </retentionStrategy>
      <launcher class="hudson.plugins.ec2.ssh.EC2UnixLauncher"/>
      <label>windows-buildnode</label>
      <nodeProperties/>
      <instanceId>i-xxxxxxxxx</instanceId>
      <initScript/>
      <tmpDir>c:/windows/temp</tmpDir>
      <remoteAdmin>admin</remoteAdmin>
      <templateDescription>WinAgent</templateDescription>
      <javaPath>java</javaPath>
      <jvmopts/>
      <stopOnTerminate>false</stopOnTerminate>
      <idleTerminationMinutes>180</idleTerminationMinutes>
      <isConnected>false</isConnected>
      <tags class="linked-list">
      <hudson.plugins.ec2.EC2Tag>
      <name>jenkins_slave_type</name>
      <value>demand_WinAgent</value>
      </hudson.plugins.ec2.EC2Tag>
      <hudson.plugins.ec2.EC2Tag>
      <name>Name</name>
      <value>Jenkins-WinAgent</value>
      </hudson.plugins.ec2.EC2Tag>
      <hudson.plugins.ec2.EC2Tag>
      <name>jenkins_server_url</name>
      <value>https://jenkins-master.example.com/jenkins/</value>
      </hudson.plugins.ec2.EC2Tag>
      </tags>
      <cloudName>ec2-EC2 Agent</cloudName>
      <amiType class="hudson.plugins.ec2.UnixData">
      <rootCommandPrefix/>
      <slaveCommandPrefix/>
      <slaveCommandSuffix/>
      <sshPort>22</sshPort>
      <bootDelay/>
      </amiType>
      <maxTotalUses>-1</maxTotalUses>
      <tenancy>Default</tenancy>
      <metadataEndpointEnabled>true</metadataEndpointEnabled>
      <metadataTokensRequired>false</metadataTokensRequired>
      <metadataHopsLimit>1</metadataHopsLimit>
      <launchTimeout>2147483647</launchTimeout>
      </hudson.plugins.ec2.EC2Slave>

       

      Logs from the Agent:

      Sep 07, 2022 12:10:53 AM hudson.remoting.SynchronousCommandTransport$ReaderThread run
      INFO: I/O error in channel channel
      java.io.IOException: Unexpected termination of the channel
          at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:75)
      Caused by: java.io.EOFException
          at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2681)
          at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:3156)
          at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:862)
          at java.io.ObjectInputStream.<init>(ObjectInputStream.java:358)
          at hudson.remoting.ObjectInputStreamEx.<init>(ObjectInputStreamEx.java:49)
          at hudson.remoting.Command.readFrom(Command.java:142)
          at hudson.remoting.Command.readFrom(Command.java:128)
          at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:35)
          at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:61)

      Any help will be highly appreciated.

      Thanks in advance!

            thoulen FABRIZIO MANFREDI
            todori438 Todor Ivanov
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              Created:
              Updated: