CODEWITHSUNDEEP
clouderacloudera-cdhcloudera-manager
merilstack
merilstack

Reputation: 878

Error when Communicating with the server while Cluster Setup in Cloudera

I am trying to up Hadoop in Centos-7 usign CLoudera, but while Cluster Setup process (Single node), I am getting this error stating:

There was an error when communicating with the server. See the log file for more information.

enter image description here I logged into cloudera-scm-agent.log file using 

sudo cat /var/log/cloudera-scm-agent/cloudera-scm-agent.log

And I see Failed directory creation and connection refused errors.
The detailed log file can be found here.

Can someone please assist me on what am I doing wrong here?

Upvotes: 0

Views: 881

Answers (1)

Radhakrishnan Rk
Radhakrishnan Rk

Reputation: 561

Have you installed the cluster with single user mode? if so the system user "cloudera-scm" should have permission to perform read, write operation on service log, pid, data directory. From your log message, all services are refused to start because of improper file system permission.

stacks', u'bytes_free_warning_threshhold_bytes': 0, u'group': u'cloudera-scm', u'user': u'cloudera-scm', u'mode': 493}]
[01/Nov/2018 04:41:11 +0000] 28095 MainThread os_ops       ERROR    Failed directory creation: /var/log/zookeeper/stacks: [Errno 13] Permission denied: '/var/log/zookeeper'
[01/Nov/2018 04:41:11 +0000] 28095 MainThread process      ERROR    Could not evaluate resource {u'path': u'/var/log/zookeeper/stacks', u'bytes_free_warning_threshhold_bytes': 0, u'group': u'cloudera-scm', u'user': u'cloudera-scm', u'mode': 493}
Traceback (most recent call last):
  File "/usr/lib64/cmf/agent/build/env/lib/python2.7/site-packages/cmf-5.15.1-py2.7.egg/cmf/process.py", line 963, in _do_directory_resources
    self.osops.mkabsdir(d["path"], user=d["user"], group=d["group"], mode=d["mode"])
  File "/usr/lib64/cmf/agent/build/env/lib/python2.7/site-packages/cmf-5.15.1-py2.7.egg/cmf/util/os_ops.py", line 180, in mkabsdir
    os.makedirs(path)
  File "/usr/lib64/cmf/agent/build/env/lib64/python2.7/os.py", line 150, in makedirs
    makedirs(head, mode)
  File "/usr/lib64/cmf/agent/build/env/lib64/python2.7/os.py", line 157, in makedirs
    mkdir(name, mode)
OSError: [Errno 13] Permission denied: '/var/log/zookeeper'

Upvotes: 1

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