The `sh` step in a Jenkins Pipeline uses `nohup` to launch the script on the
agent in such a way that Jenkins can restart while the `sh` step is running
without interrupting the script’s execution.
Is the `nohup` command available on NonStop/Tandem machines? If so, is it
reachable from the agent’s PATH? What is the result of `which nohup` on the
agent? (For me on OS X the result is /usr/bin/nohup, and /usr/bin is on my
PATH.)
> On Sep 25, 2018, at 11:36, Meg Watson <watso...@gmail.com> wrote:
>
> Hi,
>
> I'm a newbie to pipelines. I have a Jenkins master running on Linux (RHEL),
> and I have an agent running (via SSH) on a NonStop/Tandem machine, which
> looks like UNIX for all intents and purposes. I can run various jobs on the
> NonStop agent without issue, build steps with shell commands work fine.
>
> However, when I use an "sh ..." command in a pipeline script, it fails with
> an error about "can't find nohup...".
>
> Any suggestions? I even went as far as to create a symlink to nohup in the
> /home/hp/meg/remote_jenkins/workspace/Ermiyas3 directory. No dice.
>
> Here is the pipeline script:
>
> pipeline {
> agent { node { label 'MEG' } }
> environment {
> PATH =
> '/bin:/usr/coreutils/bin:.:/home/hp/meg/bin:/usr/local/bin:/usr/tandem/java/bin:/usr/local/maven/bin'
> }
> stages {
> stage('Build') {
> steps {
> echo 'Building..'
> echo 'env.PATH=' + env.PATH
> sh 'ls'
> }
> }
> stage('Test') {
> steps {
> input 'Click to execute TEST'
> echo 'Testing..'
> sh 'mvn test'
> }
> }
> stage('Deploy') {
> steps {
> input 'Click to execute DEPLOY'
> echo 'Deploying....'
> }
> }
> }
> }
>
> Here is the log:
>
> Started by user mwatson <http://bmc053.atc-hp.com:16877/user/mwatson>
> Running in Durability level: MAX_SURVIVABILITY
> [Pipeline] node
> Running on TSEK_MEG <http://bmc053.atc-hp.com:16877/computer/TSEK_MEG/> in
> /home/hp/meg/remote_jenkins/workspace/Ermiyas3
> [Pipeline] {
> [Pipeline] withEnv
> [Pipeline] {
> [Pipeline] stage
> [Pipeline] { (Build)
> [Pipeline] echo
> Building..
> [Pipeline] echo
> env.PATH=/bin:/usr/coreutils/bin:.:/home/hp/meg/bin:/usr/local/bin:/usr/tandem/java/bin:/usr/local/maven/bin
> [Pipeline] sh
> [Ermiyas3] Running shell script
> [Pipeline] }
> [Pipeline] // stage
> [Pipeline] stage
> [Pipeline] { (Test)
> Stage "Test" skipped due to earlier failure(s)
> [Pipeline] }
> [Pipeline] // stage
> [Pipeline] stage
> [Pipeline] { (Deploy)
> Stage "Deploy" skipped due to earlier failure(s)
> [Pipeline] }
> [Pipeline] // stage
> [Pipeline] }
> [Pipeline] // withEnv
> [Pipeline] }
> [Pipeline] // node
> [Pipeline] End of Pipeline
> java.io.IOException: error=4002, No such file or directory
> at java.lang.UNIXProcess.forkAndExec(Native Method)
> at java.lang.UNIXProcess.<init>(UNIXProcess.java:251)
> at java.lang.ProcessImpl.start(ProcessImpl.java:134)
> at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
> Also: hudson.remoting.Channel$CallSiteStackTrace: Remote call to TSEK_MEG
> at
> hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1741)
> at
> hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:357)
> at hudson.remoting.Channel.call(Channel.java:955)
> at hudson.Launcher$RemoteLauncher.launch(Launcher.java:1052)
> at hudson.Launcher$ProcStarter.start(Launcher.java:449)
> at
> org.jenkinsci.plugins.durabletask.BourneShellScript.launchWithCookie(BourneShellScript.java:186)
> at
> org.jenkinsci.plugins.durabletask.FileMonitoringTask.launch(FileMonitoringTask.java:71)
> at
> org.jenkinsci.plugins.workflow.steps.durable_task.DurableTaskStep$Execution.start(DurableTaskStep.java:176)
> 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.GeneratedMethodAccessor907.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
> at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
> at
> groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.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$ContinuationImpl.fixArg(FunctionCallBlock.java:82)
> at sun.reflect.GeneratedMethodAccessor821.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> com.cloudbees.groovy.cps.impl.ContinuationPtr$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.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)
> Caused: java.io.IOException: Cannot run program "nohup" (in directory
> "/home/hp/meg/remote_jenkins/workspace/Ermiyas3"): error=4002, No such file
> or directory
> at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
> at hudson.Proc$LocalProc.<init>(Proc.java:249)
> at hudson.Proc$LocalProc.<init>(Proc.java:218)
> at hudson.Launcher$LocalLauncher.launch(Launcher.java:929)
> at hudson.Launcher$ProcStarter.start(Launcher.java:449)
> at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:1299)
> at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:1259)
> at hudson.remoting.UserRequest.perform(UserRequest.java:212)
> at hudson.remoting.UserRequest.perform(UserRequest.java:54)
> at hudson.remoting.Request$2.run(Request.java:369)
> at
> hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Finished: FAILURE
>
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