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  1. Jenkins
  2. JENKINS-54002

Jenkins shows kafka agent as connected even when the "Remote root directory" is not accessible

    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: Minor Minor
    • remoting-kafka-plugin
    • None
    • Jenkins 2.141 remoting-kafka-plugin-1.1.0

      Jenkins shows kafka agent as connected even when the "Remote root directory" is not accessible

      As a result, jobs get assigned to that node and jobs fail with:

       

      // Also:   hudson.remoting.Channel$CallSiteStackTrace: Remote call to overtakeAlso:   hudson.remoting.Channel$CallSiteStackTrace: Remote call to overtake at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1741) at hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:357) at hudson.remoting.Channel.call(Channel.java:955) at hudson.FilePath.act(FilePath.java:1070) at hudson.FilePath.act(FilePath.java:1059) at hudson.FilePath.mkdirs(FilePath.java:1244) at org.jenkinsci.plugins.durabletask.FileMonitoringTask$FileMonitoringController.<init>(FileMonitoringTask.java:154) at org.jenkinsci.plugins.durabletask.BourneShellScript$ShellController.<init>(BourneShellScript.java:198) at org.jenkinsci.plugins.durabletask.BourneShellScript$ShellController.<init>(BourneShellScript.java:190) at org.jenkinsci.plugins.durabletask.BourneShellScript.launchWithCookie(BourneShellScript.java:111) at org.jenkinsci.plugins.durabletask.FileMonitoringTask.launch(FileMonitoringTask.java:86) at org.jenkinsci.plugins.workflow.steps.durable_task.DurableTaskStep$Execution.start(DurableTaskStep.java:182) at org.jenkinsci.plugins.workflow.cps.DSL.invokeStep(DSL.java:229) at org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:153) at org.jenkinsci.plugins.workflow.cps.CpsScript.invokeMethod(CpsScript.java:122) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) at groovy.lang.MetaClassImpl.invokeMethod(MetaCl.al.com.auassImpl.java:1213) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:42) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113) at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:157) at org.kohsuke.groovy.sandbox.GroovyInterceptor.onMethodCall(GroovyInterceptor.java:23) at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onMethodCall(SandboxInterceptor.java:133) at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:155) at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:159) at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:129) at com.cloudbees.groovy.cps.sandbox.SandboxInvoker.methodCall(SandboxInvoker.java:17) at com.cloudbees.groovy.cps.impl.ContinuationGroup.methodCall(ContinuationGroup.java:57) at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.dispatchOrArg(FunctionCallBlock.java:109) at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.fixArg(FunctionCallBlock.java:82) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at com.cloudbees.groovy.cps.impl.ContinuationPtr$ContinuationImpl.receive(ContinuationPtr.java:72) at com.cloudbees.groovy.cps.impl.ConstantBlock.eval(ConstantBlock.java:21) at com.cloudbees.groovy.cps.Next.step(Next.java:83) at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:174) at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:163) at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:122) at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:261) at com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:163) at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access$101(SandboxContinuable.java:34) at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.lambda$run0$0(SandboxContinuable.java:59) at org.jenkinsci.plugins.workflow.cps.SandboxContinuable$$Lambda$327/2122319870.call(Unknown Source) at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox(GroovySandbox.java:108) at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:58) at org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:174) at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:332) at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$200(CpsThreadGroup.java:83) at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:244) at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:232) at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:64) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:131) at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28) at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:59) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)java.nio.file.AccessDeniedException: /var/kafka/jenkins at sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)
      

      It would be preferable that if the node/user does not have access to the "Remote root directory"  it shows the node as offline and no jobs get assigned to it. Bonus if it shows a clear message saying that it does not have access to the folder.

       

      To repro, just create a folder that is no access to the user that is running the process, or put a non-existent folder in the "Remote root directory", start the remoting agent process, the nodes page will show the node as online, running a job in that node will fail with the stack trace shown above

      --------------

      One possible solution will be to append the value of "Remote root directory" to the line 

      java -jar remoting-kafka-agent.jar -name planet -master http://jenkinssecure:8081/ -secret aa56ec7e376f2b66927 -kafkaURL kafka:9092 -noauth -remoteRootDir /var/kafka

       

      Then the check can be done in the agent and fail the startup if the folder can not be accessed.
       

          [JENKINS-54002] Jenkins shows kafka agent as connected even when the "Remote root directory" is not accessible

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            pvtuan10 Pham Vu Tuan
            fnaum Federico Naum
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              Created:
              Updated: