Hi dekan,   It looks like you're running into the same issue as the following fellow community members [0] Can you try the workaround in [1]    [0] https://community.cloudera.com/t5/Cloudera-Manager-Installation/Cloudera-Manager-Heartbeat-Python-Supervisor-Issue-System-Exit/m-p/57547 [1] http://community.cloudera.com/t5/Cloudera-Manager-Installation/CDH-5-12-0-clouder-manager-agent-can-not-start/m-p/58726 ... View more

For posterity this seems to be an issue in CM 5.12 and a fix is scheduled to be available in CM 5.12.x maintenance release. - workaround posted in    [0] http://community.cloudera.com/t5/Cloudera-Manager-Installation/Installation-failed-Failed-to-receive-heartbeat-from-agent/m-p/58809#M11660 http://community.cloudera.com/t5/Cloudera-Manager-Installation/Cloudera-Manager-Agent-cannot-connect-with-supervisor-Failed-to/td-p/58522 http://community.cloudera.com/t5/Cloudera-Manager-Installation/CDH-5-12-0-clouder-manager-agent-can-not-start/m-p/58726 ... View more

hi leiyz,   can you share your mount output and also what does the following command show?   for mnt in $(mount|cut -d ' ' -f 3); do stat $mnt 1>/dev/null 2>&1; rc=$?; if [ $rc -ne 0 ]; then echo "error accessing $mnt"; fi; done regards,     michalis     ... View more

The mountpoint isn't part of Cloudera, and likely being mounted by other process in your system. The process that controls the tmpfs mount should be able to remount it again, however you will run into the issue again if you hard_stop the agent. The fix is already been committed and will be available in the next Cloudera maintenance release. ... View more

Hello Josholsan,   This stack trace [0] suggests that Cloudera Manager Agent failed to create '/var/run/cloudera-scm-agent/supervisor/supervisord.conf', from past experience the error is often misleading.    To assist us with troubleshooting;   On the affected node can you provide the output of the following command;   [bash prompt root-user]# /usr/lib/cmf/agent/build/env/bin/python /usr/lib/cmf/agent/build/env/bin/cmf-agent --package_dir /usr/lib/cmf/service --agent_dir /var/run/cloudera-scm-agent --lib_dir /var/lib/cloudera-scm-agent --logfile /var/log/cloudera-scm-agent/cloudera-scm-agent.log --comm_name cmf-agent --pidfile /var/run/cloudera-scm-agent/cloudera-scm-agent.pid   Best,   Michalis   [0]  >>[07/Aug/2017 10:25:17 +0000] 10429 MainThread agent ERROR Failed to connect to previous supervisor. >>Traceback (most recent call last): >> File "/usr/lib/cmf/agent/build/env/lib/python2.7/site-packages/cmf-5.12.0-py2.7.egg/cmf/agent.py", line 2109, in find_or_start_supervisor >> self.configure_supervisor_clients() >> File "/usr/lib/cmf/agent/build/env/lib/python2.7/site-packages/cmf-5.12.0-py2.7.egg/cmf/agent.py", line 2290, in configure_supervisor_clients >> supervisor_options.realize(args=["-c", os.path.join(self.supervisor_dir, "supervisord.conf")]) >> File "/usr/lib/cmf/agent/build/env/lib/python2.7/site-packages/supervisor-3.0-py2.7.egg/supervisor/options.py", line 1599, in realize >> Options.realize(self, *arg, **kw) >> File "/usr/lib/cmf/agent/build/env/lib/python2.7/site-packages/supervisor-3.0-py2.7.egg/supervisor/options.py", line 333, in realize >> self.process_config() >> File "/usr/lib/cmf/agent/build/env/lib/python2.7/site-packages/supervisor-3.0-py2.7.egg/supervisor/options.py", line 341, in process_config >> self.process_config_file(do_usage) >> File "/usr/lib/cmf/agent/build/env/lib/python2.7/site-packages/supervisor-3.0-py2.7.egg/supervisor/options.py", line 376, in process_config_file >> self.usage(str(msg)) >> File "/usr/lib/cmf/agent/build/env/lib/python2.7/site-packages/supervisor-3.0-py2.7.egg/supervisor/options.py", line 164, in usage >> self.exit(2) >>SystemExit: 2     ... View more