Hi,   I'm trying to install Cloudera Manager using Path A showed in the official website. But it fails on the hearbeat process. The log is like this.     [18/Jul/2017 06:25:43 +0000] 12412 MainThread agent ERROR Failed to connect to previous supervisor. Traceback (most recent call last): File "/usr/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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 [18/Jul/2017 06:25:48 +0000] 12412 Dummy-1 daemonize WARNING Stopping daemon. [18/Jul/2017 06:25:48 +0000] 12412 Dummy-1 agent INFO Stopping agent... [18/Jul/2017 06:25:48 +0000] 12412 Dummy-1 agent INFO No extant cgroups; unmounting any cgroup roots My system   Linux cloudera.databoss.com 3.10.0-514.26.2.el7.x86_64 #1 SMP Fri Jun 30 05:26:04 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux   'hostname' and 'hostname -f' commands   cloudera.databoss.com   hosts file ( 58 is the same machine. I'm trying to install the host part to same machine. Thoug, it's same when I try different machine as well)   127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.1.58 cloudera.databoss.com cloudera Firewalld and Selinux is disabled. ... View more