below is the scm-agent log | anyone having any clue  =============================================================================== [root@master cloudera-scm-agent]# tail -50 cloudera-scm-agent.log [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get file descriptor count for process 12198: [Errno 2] No such file or directory: '/proc/12198/fd/' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get process metrics 12198: no process found with pid 12198 [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter __init__ ERROR Could not get role update from: GenericMonitor YARN-NODEMANAGER for yarn-NODEMANAGER-a0309459eb6bd0198de5c8d1e0b9150f Traceback (most recent call last): File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/cmf-5.11.1-py2.6.egg/cmf/monitor/__init__.py", line 220, in _safe_get_role_update return monitor.get_role_update() File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/cmf-5.11.1-py2.6.egg/cmf/monitor/generic/__init__.py", line 181, in get_role_update LOG) File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/cmf-5.11.1-py2.6.egg/cmf/monitor/proc_metrics_utils.py", line 183, in add_with_descendants_proc_metrics metrics = _get_process_and_descendant_metrics(pid) File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/cmf-5.11.1-py2.6.egg/cmf/monitor/proc_metrics_utils.py", line 161, in _get_process_and_descendant_metrics process = psutil.Process(pid) File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/psutil-2.1.3-py2.6-linux-x86_64.egg/psutil/__init__.py", line 296, in __init__ self._init(pid) File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/psutil-2.1.3-py2.6-linux-x86_64.egg/psutil/__init__.py", line 331, in _init raise NoSuchProcess(pid, None, msg) NoSuchProcess: no process found with pid 12198 [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to read file descriptor max for process 12286: [Errno 2] No such file or directory: '/proc/12286/limits' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get file descriptor count for process 12286: [Errno 2] No such file or directory: '/proc/12286/fd/' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get process metrics 12286: no process found with pid 12286 [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to read file descriptor max for process 13090: [Errno 2] No such file or directory: '/proc/13090/limits' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get file descriptor count for process 13090: [Errno 2] No such file or directory: '/proc/13090/fd/' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get process metrics 13090: no process found with pid 13090 [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to read file descriptor max for process 12429: [Errno 2] No such file or directory: '/proc/12429/limits' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get file descriptor count for process 12429: [Errno 2] No such file or directory: '/proc/12429/fd/' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get process metrics 12429: no process found with pid 12429 [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to read file descriptor max for process 13217: [Errno 2] No such file or directory: '/proc/13217/limits' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get file descriptor count for process 13217: [Errno 2] No such file or directory: '/proc/13217/fd/' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get process metrics 13217: no process found with pid 13217 [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to read file descriptor max for process 12149: [Errno 2] No such file or directory: '/proc/12149/limits' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get file descriptor count for process 12149: [Errno 2] No such file or directory: '/proc/12149/fd/' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get process metrics 12149: no process found with pid 12149 [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to read file descriptor max for process 12664: [Errno 2] No such file or directory: '/proc/12664/limits' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get file descriptor count for process 12664: [Errno 2] No such file or directory: '/proc/12664/fd/' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get process metrics 12664: no process found with pid 12664 [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to read file descriptor max for process 12129: [Errno 2] No such file or directory: '/proc/12129/limits' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get file descriptor count for process 12129: [Errno 2] No such file or directory: '/proc/12129/fd/' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get process metrics 12129: no process found with pid 12129 [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to read file descriptor max for process 12332: [Errno 2] No such file or directory: '/proc/12332/limits' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get file descriptor count for process 12332: [Errno 2] No such file or directory: '/proc/12332/fd/' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get process metrics 12332: no process found with pid 12332 [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to read file descriptor max for process 12821: [Errno 2] No such file or directory: '/proc/12821/limits' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get file descriptor count for process 12821: [Errno 2] No such file or directory: '/proc/12821/fd/' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get process metrics 12821: no process found with pid 12821 [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to read file descriptor max for process 12737: [Errno 2] No such file or directory: '/proc/12737/limits' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get file descriptor count for process 12737: [Errno 2] No such file or directory: '/proc/12737/fd/' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get process metrics 12737: no process found with pid 12737 [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to read file descriptor max for process 13339: [Errno 2] No such file or directory: '/proc/13339/limits' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get file descriptor count for process 13339: [Errno 2] No such file or directory: '/proc/13339/fd/' [13/Sep/2017 16:54:23 +0000] 11497 MonitorDaemon-Reporter proc_metrics_utils ERROR Failed to get process metrics 13339: no process found with pid 13339 ... 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