[jira] [Updated] (AMBARI-18705) All host metrics not being collected by AMS if user does not have permissions to read mount point.

["Aravindan Vijayan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-18705?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aravindan Vijayan updated AMBARI-18705:
---------------------------------------
    Status: Patch Available  (was: Open)

> All host metrics not being collected by AMS if user does not have permissions to read mount point.
> --------------------------------------------------------------------------------------------------
>
>                 Key: AMBARI-18705
>                 URL: https://issues.apache.org/jira/browse/AMBARI-18705
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-metrics
>    Affects Versions: 2.4.2
>            Reporter: Aravindan Vijayan
>            Assignee: Aravindan Vijayan
>            Priority: Critical
>             Fix For: 2.4.2
>
>
> PROBLEM
> Host metrics are not being collected by AMS in certain environments with restrictive disks. 
> This is because the metrics monitor process which collects the host metrics has insufficient  permissions to read a mountpoint. It fails rather than sending other metrics.
> {code}
> Traceback (most recent call last):
>   File "/usr/lib64/python2.7/threading.py", line 811, in __bootstrap_inner
>     self.run()
>   File "/usr/lib64/python2.7/threading.py", line 1083, in run
>     self.function(*self.args, **self.kwargs)
>   File "/usr/lib/python2.6/site-packages/resource_monitoring/core/metric_collector.py", line 45, in process_event
>     self.process_host_collection_event(event)
>   File "/usr/lib/python2.6/site-packages/resource_monitoring/core/metric_collector.py", line 76, in process_host_collection_event
>     metrics.update(self.host_info.get_combined_disk_usage())
>   File "/usr/lib/python2.6/site-packages/resource_monitoring/core/host_info.py", line 188, in get_combined_disk_usage
>     usage = psutil.disk_usage(part.mountpoint)
>   File "/usr/lib/python2.6/site-packages/resource_monitoring/psutil/build/lib.linux-x86_64-2.7/psutil/__init__.py", line 1690, in disk_usage
>     return _psplatform.disk_usage(path)
>   File "/usr/lib/python2.6/site-packages/resource_monitoring/psutil/build/lib.linux-x86_64-2.7/psutil/_psposix.py", line 121, in disk_usage
>     st = os.statvfs(path)
> OSError: [Errno 13] Permission denied: '/abc/def/mountpoint'
> {code}
> {code}
> [root@ctr-e45-1475874954070-13451-01-000004 ~]# ls -lrt /abc/def/mountpoint
> total 4
> drwx--x--- 4 nobody 3004   36 Oct 26 07:20 filecache
> drwxr-s--- 5 nobody 3004 4096 Oct 26 07:21 container_e45_1475874954070_13451_01_000004
> {code}
> FIX
> In AMS monitor, tolerate this failure and send other host metrics.



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