How to monitor an NFS file system Mounted RHEL7 system using AppDynamics?

[CommunityUser]

Hi All,

How to monitor an NFS file system Mounted RHEL7 system using appdynamics?

I have tried using monitoring NFS using  "AppDynamics Extension for Linux Monitoring"

I have configured based on the documentation but unfortunately, I do not see the NFS share

using  machineagent-4.4.3.1214.

I am getting the following error:

INFO MetricWriteHelperFactory - The instance of MetricWriteHelperFactory is com.appdynamics.extensions.MetricWriteHelper@4da9ced9
[Monitor-Task-Thread3] 23 Aug 2019 12:50:21,893 ERROR NFSMountMetricsTask - Exception occurred collecting NFS I/O metrics
java.lang.NullPointerException
at com.appdynamics.extensions.linux.NFSMountMetricsTask.getMountIOStats(NFSMountMetricsTask.java:173)
at com.appdynamics.extensions.linux.NFSMountMetricsTask.run(NFSMountMetricsTask.java:66)
at com.appdynamics.extensions.MonitorThreadPoolExecutor$2.run(MonitorThreadPoolExecutor.java:102)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
[Monitor-Task-Thread2] 23 Aug 2019 12:50:22,049 ERROR FileParser - Failed to read CPU metricStats
java.lang.NullPointerException
at com.appdynamics.extensions.linux.FileParser.getStats(FileParser.java:65)
at com.appdynamics.extensions.linux.Stats.getCPUStats(Stats.java:91)
at com.appdynamics.extensions.linux.LinuxMetricsTask.run(LinuxMetricsTask.java:58)
at com.appdynamics.extensions.MonitorThreadPoolExecutor$2.run(MonitorThreadPoolExecutor.java:102)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
[Monitor-Task-Thread2] 23 Aug 2019 12:50:22,050 ERROR Stats - Exception fetching CPU metricStats
java.lang.NullPointerException
at com.appdynamics.extensions.linux.Stats.getCPUStats(Stats.java:93)
at com.appdynamics.extensions.linux.LinuxMetricsTask.run(LinuxMetricsTask.java:58)
at com.appdynamics.extensions.MonitorThreadPoolExecutor$2.run(MonitorThreadPoolExecutor.java:102)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

Regards

Mageshkumar.Venugopalan

[Satbir_Singh]

Hi,

There is an issue with the extension. I see an issue reported internally but not sure if it will be fixed as its community supported now.

Internal ticket id for reference - ACE-1073. You can try connecting to your account manager for further follow up.

Thanks,
Satbir Singh

[Pavan_Jadhav2]

Hi Team, Do we have any solution on this, we are facing similar issue in Linux Monitor extension.  

Error log: 

[Monitor-Task-Thread3] 01 Jun 2023 02:40:56,905 ERROR NFSMountMetricsTask-Linux Monitor - Exception occurred collecting NFS I/O metrics
java.lang.NullPointerException: null
at com.appdynamics.extensions.linux.NFSMountMetricsTask.getMountIOStats(NFSMountMetricsTask.java:173) [?:?]
at com.appdynamics.extensions.linux.NFSMountMetricsTask.run(NFSMountMetricsTask.java:66) [?:?]
at com.appdynamics.extensions.executorservice.MonitorThreadPoolExecutor$TaskRunnable.run(MonitorThreadPoolExecutor.java:113) [?:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:?]
at java.lang.Thread.run(Unknown Source) [?:?]

Thanks,

Pavan

[ademorai]

This post is old but if you're coming for the same issue, it often happens when your NFT mount points to invalid path.

Execute `nfsiostat <mount-point>` and confirm that each mount point returns a value. If you receive no output or encounter an error, please verify that your mount points are specified correctly.

If this helps you, please give us a thumbs up so others will be encouraged to check the same.

Regards

Anderson.