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  1. Jenkins
  2. JENKINS-61029

Swarm client not working anymore with Jenkins 2.220

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    Details

    • Type: Bug
    • Status: Resolved (View Workflow)
    • Priority: Blocker
    • Resolution: Fixed
    • Component/s: swarm-plugin
    • Labels:
    • Environment:
      Jenkins 2.220 on Debian 10.3 x64 (jenkins.io Debian repo with Debian default JRE) with Swarm plug-in modules 3.17
      swarm-client 3.17 on Windows 10, AdoptOpenJDK 8, specified master explicitly
    • Similar Issues:
    • Released As:
      3.18

      Description

      Slave

      Exec:

      java.exe -Xrs -jar "%BASE%\swarm-client-3.17.jar" -mode exclusive -name *** -labels *** -executors 1 -master [http://***] -username *** -password *** -fsroot "%BASE%" -deleteExistingClients -labelsFile "%BASE%\labels"

      Log:

      Feb 10, 2020 10:25:50 AM hudson.plugins.swarm.SwarmClient discoverFromMasterUrl
      SEVERE: Failed to fetch slave info from Jenkins, HTTP response code: 500
      Feb 10, 2020 10:25:50 AM hudson.plugins.swarm.Client run
      SEVERE: RetryException occurred
      hudson.plugins.swarm.RetryException: Failed to fetch slave info from Jenkins, HTTP response code: 500
      	at hudson.plugins.swarm.SwarmClient.discoverFromMasterUrl(SwarmClient.java:248)
      	at hudson.plugins.swarm.Client.run(Client.java:130)
      	at hudson.plugins.swarm.Client.main(Client.java:104)Feb 10, 2020 10:25:50 AM hudson.plugins.swarm.Client run
      INFO: Retrying in 10 seconds 

      Master

      Log:

      2020-02-10 09:50:32.698+0000 [id=276]   WARNING o.e.j.s.h.ContextHandler$Context#log: Error while serving http://***/plugin/swarm/slaveInfo
      java.lang.NoClassDefFoundError: hudson/UDPBroadcastFragment
              at hudson.plugins.swarm.PluginImpl.getSwarmSecret(PluginImpl.java:262)
              at hudson.plugins.swarm.PluginImpl.doSlaveInfo(PluginImpl.java:272)
              at java.base/java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:710)
              at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:396)
      Caused: java.lang.reflect.InvocationTargetException
              at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:400)
              at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:408)
              at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:212)
              at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:145)
              at org.kohsuke.stapler.MetaClass$11.doDispatch(MetaClass.java:535)
              at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
              at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:747)
              at org.kohsuke.stapler.Stapler.invoke(Stapler.java:878)
              at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:280)
              at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
              at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:747)
              at org.kohsuke.stapler.Stapler.invoke(Stapler.java:878)
              at org.kohsuke.stapler.Stapler.invoke(Stapler.java:676)
              at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
              at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:755)
              at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1617)
      [...] 

      The master is unable to load a class: UDPBroadcastFragment is now missing with jenkins 2.220, which got removed in jenkins core with f10d9f95fc ("JENKINS-60913 Remove network discovery services (#4460)").

       

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              Assignee:
              basil Basil Crow
              Reporter:
              phbaer Philipp Baer
              Votes:
              2 Vote for this issue
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              6 Start watching this issue

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                Updated:
                Resolved: