It failed while installing HCat Client. I retried and while its installing below is the ambari-agent.log ERROR 2016-07-24 02:19:07,238 script_alert.py:112 - [Alert][yarn_nodemanager_health] Failed with result CRITICAL: ['Connection failed to http://localhost.localdomain:8042/ws/v1/node/info (Traceback (most recent call last):\n File "/var/lib/ambari-agent/cache/common-services/YARN/2.1.0.2.0/package/alerts/alert_nodemanager_health.py", line 165, in execute\n url_response = urllib2.urlopen(query, timeout=connection_timeout)\n File "/usr/lib64/python2.6/urllib2.py", line 126, in urlopen\n return _opener.open(url, data, timeout)\n File "/usr/lib64/python2.6/urllib2.py", line 391, in open\n response = self._open(req, data)\n File "/usr/lib64/python2.6/urllib2.py", line 409, in _open\n \'_open\', req)\n File "/usr/lib64/python2.6/urllib2.py", line 369, in _call_chain\n result = func(*args)\n File "/usr/lib64/python2.6/urllib2.py", line 1190, in http_open\n return self.do_open(httplib.HTTPConnection, req)\n File "/usr/lib64/python2.6/urllib2.py", line 1165, in do_open\n raise URLError(err)\nURLError: <urlopen error [Errno 111] Connection refused>\n)'] WARNING 2016-07-24 02:19:07,238 base_alert.py:417 - [Alert][yarn_resourcemanager_webui] HA nameservice value is present but there are no aliases for {{yarn-site/yarn.resourcemanager.ha.rm-ids}} ERROR 2016-07-24 02:19:07,256 script_alert.py:112 - [Alert][hive_webhcat_server_status] Failed with result CRITICAL: ['Connection failed to http://localhost.localdomain:8042/ws/v1/node/info + \nTraceback (most recent call last):\n File "/var/lib/ambari-agent/cache/common-services/HIVE/0.12.0.2.0/package/alerts/alert_webhcat_server.py", line 190, in execute\n url_response = urllib2.urlopen(query_url, timeout=connection_timeout)\n File "/usr/lib64/python2.6/urllib2.py", line 126, in urlopen\n return _opener.open(url, data, timeout)\n File "/usr/lib64/python2.6/urllib2.py", line 391, in open\n response = self._open(req, data)\n File "/usr/lib64/python2.6/urllib2.py", line 409, in _open\n \'_open\', req)\n File "/usr/lib64/python2.6/urllib2.py", line 369, in _call_chain\n result = func(*args)\n File "/usr/lib64/python2.6/urllib2.py", line 1190, in http_open\n return self.do_open(httplib.HTTPConnection, req)\n File "/usr/lib64/python2.6/urllib2.py", line 1165, in do_open\n raise URLError(err)\nURLError: <urlopen error [Errno 111] Connection refused>\n'] INFO 2016-07-24 02:19:07,263 logger.py:67 - Execute['export HIVE_CONF_DIR='/etc/hive/conf.server' ; hive --hiveconf hive.metastore.uris=thrift://localhost.localdomain:9083 --hiveconf hive.metastore.client.connect.retry.delay=1 --hiveconf hive.metastore.failure.retries=1 --hiveconf hive.metastore.connect.retries=1 --hiveconf hive.metastore.client.socket.timeout=14 --hiveconf hive.execution.engine=mr -e 'show databases;''] {'path': ['/bin/', '/usr/bin/', '/usr/sbin/', '/usr/lib/hive/bin'], 'user': 'ambari-qa', 'timeout': 60} INFO 2016-07-24 02:19:07,264 logger.py:67 - Execute['source /etc/oozie/conf/oozie-env.sh ; oozie admin -oozie http://localhost.localdomain:8042/ws/v1/node/info -status'] {'environment': None, 'user': 'oozie'} INFO 2016-07-24 02:19:07,275 logger.py:67 - Execute['! beeline -u 'jdbc:hive2://localhost.localdomain:10000/;transportMode=binary' -e '' 2>&1| awk '{print}'|grep -i -e 'Connection refused' -e 'Invalid URL''] {'path': ['/bin/', '/usr/bin/', '/usr/lib/hive/bin/', '/usr/sbin/'], 'user': 'ambari-qa', 'timeout': 60} ERROR 2016-07-24 02:19:07,335 script_alert.py:112 - [Alert][hive_metastore_process] Failed with result CRITICAL: ['Metastore on localhost.localdomain failed (Traceback (most recent call last):\n File "/var/lib/ambari-agent/cache/common-services/HIVE/0.12.0.2.0/package/alerts/alert_hive_metastore.py", line 183, in execute\n timeout=int(check_command_timeout) )\n File "/usr/lib/python2.6/site-packages/resource_management/core/base.py", line 154, in __init__\n self.env.run()\n File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 158, in run\n self.run_action(resource, action)\n File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 121, in run_action\n provider_action()\n File "/usr/lib/python2.6/site-packages/resource_management/core/providers/system.py", line 238, in action_run\n tries=self.resource.tries, try_sleep=self.resource.try_sleep)\n File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 70, in inner\n result = function(command, **kwargs)\n File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 92, in checked_call\n tries=tries, try_sleep=try_sleep)\n File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 140, in _call_wrapper\n result = _call(command, **kwargs_copy)\n File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 291, in _call\n raise Fail(err_msg)\nFail: Execution of \'export HIVE_CONF_DIR=\'/etc/hive/conf.server\' ; hive --hiveconf hive.metastore.uris=thrift://localhost.localdomain:9083 --hiveconf hive.metastore.client.connect.retry.delay=1 --hiveconf hive.metastore.failure.retries=1 --hiveconf hive.metastore.connect.retries=1 --hiveconf hive.metastore.client.socket.timeout=14 --hiveconf hive.execution.engine=mr -e \'show databases;\'\' returned 127. -bash: hive: command not found\n)'] ERROR 2016-07-24 02:19:07,359 script_alert.py:112 - [Alert][oozie_server_status] Failed with result CRITICAL: ["Execution of 'source /etc/oozie/conf/oozie-env.sh ; oozie admin -oozie http://localhost.localdomain:8042/ws/v1/node/info -status' returned 127. -bash: /etc/oozie/conf/oozie-env.sh: No such file or directory\n-bash: oozie: command not found"] ... 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