Hi,

I am trying to bootstrap CDH5.12 cluster through 'cyon' plugin on a few RHEL7 VMs.

The bootstrap was successful previously. 

However, after I clean-up the Cloudera Director and CDH cluster and re-install everything for testing purpose.

The same process failed at stage of installation of 'screen' package. The error trace (posted below) told me the system package manager is unknown. I checked the log generated by success bootstrap process, where the "YUM" is corrected picked up as package manager. May I check how the package manager is detected by the Cloudera Director during the bootstrap process?

Thank you.

[2017-08-25 23:57:06.440 +0800] INFO  [p-f81c82d16dd4-DefaultBootstrapDeploymentJob] - c.c.l.pipeline.util.PipelineRunner: >> InstallPackages$InstallOrUpgradePackage/5 [UNKNOWN, screen, PluggableComputeInstance{ipAddress=10.91.130.188, delegate=null, hostEndpoints=[Ho ...
[2017-08-25 23:57:06.523 +0800] ERROR [p-f81c82d16dd4-DefaultBootstrapDeploymentJob] - c.c.l.pipeline.util.PipelineRunner: Attempt to execute job failed
java.lang.UnsupportedOperationException: Unsupported package manager: UNKNOWN
        at com.cloudera.launchpad.inspector.util.PackageManagerService.getCommands(PackageManagerService.java:45)
        at com.cloudera.launchpad.bootstrap.InstallPackages$InstallOrUpgradePackage.run(InstallPackages.java:127)
        at com.cloudera.launchpad.bootstrap.InstallPackages$InstallOrUpgradePackage.run(InstallPackages.java:107)
        at com.cloudera.launchpad.pipeline.job.Job5.runUnchecked(Job5.java:34)
        at com.cloudera.launchpad.pipeline.job.Job5$$FastClassBySpringCGLIB$$54178505.invoke(<generated>)
        at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
        at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
        at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85)
        at com.cloudera.launchpad.pipeline.PipelineJobProfiler.profileJobRun(PipelineJobProfiler.java:60)
        at sun.reflect.GeneratedMethodAccessor99.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:629)
        at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:618)
        at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656)
        at com.cloudera.launchpad.bootstrap.InstallPackages$InstallOrUpgradePackage$$EnhancerBySpringCGLIB$$eae4c49.runUnchecked(<generated>)
        at com.cloudera.launchpad.pipeline.util.PipelineRunner$JobCallable.call(PipelineRunner.java:197)
        at com.cloudera.launchpad.pipeline.util.PipelineRunner$JobCallable.call(PipelineRunner.java:168)
        at com.github.rholder.retry.AttemptTimeLimiters$NoAttemptTimeLimit.call(AttemptTimeLimiters.java:78)
        at com.github.rholder.retry.Retryer.call(Retryer.java:160)
        at com.cloudera.launchpad.pipeline.util.PipelineRunner.attemptMultipleJobExecutionsWithRetries(PipelineRunner.java:133)
        at com.cloudera.launchpad.pipeline.DatabasePipelineRunner.run(DatabasePipelineRunner.java:164)
        at com.cloudera.launchpad.ExceptionHandlingRunnable.run(ExceptionHandlingRunnable.java:57)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)