When an user exits from a login node, the error appears - " cm: OSError: [Errno 2] No such file or directory: '/run/user/3336512'"

[#1]

Hi experts:

We are on the version Cloudera CDH-6.3.4. When users exit from login nodes, we see the error appearing in /var/log/messages from time to time:

Sep 23 15:06:37 hlog-2 cm: Process Process-10786:
Sep 23 15:06:37 hlog-2 cm: Traceback (most recent call last):
Sep 23 15:06:37 hlog-2 cm: File "/usr/lib64/python2.7/multiprocessing/process.py", line 258, in _bootstrap
Sep 23 15:06:37 hlog-2 cm: self.run()
Sep 23 15:06:37 hlog-2 cm: File "/usr/lib64/python2.7/multiprocessing/process.py", line 114, in run
Sep 23 15:06:37 hlog-2 cm: self._target(*self._args, **self._kwargs)
Sep 23 15:06:37 hlog-2 cm: File "/opt/cloudera/cm-agent/lib/python2.7/site-packages/cmf/monitor/host/filesystem_map.py", line 27, in disk_usage_wrapper
Sep 23 15:06:37 hlog-2 cm: usage = psutil.disk_usage(p)
Sep 23 15:06:37 hlog-2 cm: File "/opt/cloudera/cm-agent/lib/python2.7/site-packages/psutil/__init__.py", line 1947, in disk_usage
Sep 23 15:06:37 hlog-2 cm: return _psplatform.disk_usage(path)
Sep 23 15:06:37 hlog-2 cm: File "/opt/cloudera/cm-agent/lib/python2.7/site-packages/psutil/_psposix.py", line 131, in disk_usage
Sep 23 15:06:37 hlog-2 cm: st = os.statvfs(path)
Sep 23 15:06:37 hlog-2 cm: OSError: [Errno 2] No such file or directory: '/run/user/3336512'

It seems that the error does not cause any harm. But it is annoying. We are on Red Hat Enterprise 7.8.  Any suggestions on how to fix this are very welcome!

Thanks, Vincent. 

[#2]

@vincentD  To suppress this error, update the /etc/cloudera-scm-agent/config.ini on each of the hosts affected to:

1. In the line that lists the nodev filesystems:

# The list of non-device (nodev) filesystem types which will be monitored.

monitored_nodev_filesystem_types=nfs,nfs4,tmpfs

2. Please change the uncommented line to read as :

monitored_nodev_filesystem_types=nfs,nfs4

3. Restart the cloudera manager agent with:

service cloudera-scm-agent restart

Hope this helps.

Cheers!
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[#3]

Hi Chelia,

The fix does make sense. Thank you. Since we are here, can I ask another question: when we want to upgrade our Cloudera CDH-6.3.4, what is the newer software version that we could upgrade to, and hopefully will run on RHEL 8.x? Thanks again!

Regards, Vincent

[#4]

@vincentD I hope it helped to resolve your issue, Regarding your query on upgrading CDH 6.3.4 to new software version. 

Please explore the below CDP Path. 

https://docs.cloudera.com/cdp-private-cloud-upgrade/latest/release-guide/topics/cdpdc-release-notes-...
https://docs.cloudera.com/cdp-private-cloud-upgrade/latest/release-guide/topics/cm-cdh-runtime-versi...
https://docs.cloudera.com/cdp-private-cloud/latest/release-summaries/topics/announcement-202108-717....
https://docs.cloudera.com/cdp-private-cloud/latest/index.html

Cheers!
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