Hi,         I am trying to install Hadoop using Cloudera Manager 5.6 and facing the following issue Installation failed. Failed to receive heartbeat from agent. Ensure that the host's hostname is configured properly. Ensure that port 7182 is accessible on the Cloudera Manager Server (check firewall rules). Ensure that ports 9000 and 9001 are not in use on the host being added. Check agent logs in /var/log/cloudera-scm-agent/ on the host being added. (Some of the logs can be found in the installation details). If Use TLS Encryption for Agents is enabled in Cloudera Manager (Administration -> Settings -> Security), ensure that/etc/cloudera-scm-agent/config.ini has use_tls=1 on the host being added. Restart the corresponding agent and click the Retry link here.     SCM-AGENT.LOG:   [25/Jul/2016 16:21:58 +0000] 7453 MainThread agent INFO Supervised processes will add the following to their environment (in addition to the supervisor's env): {'CDH_PARQUET_HOME': '/usr/lib/parquet', 'JSVC_HOME': '/usr/libexec/bigtop-utils', 'CMF_PACKAGE_DIR': '/usr/lib64/cmf/service', 'CDH_HADOOP_BIN': '/usr/bin/hadoop', 'MGMT_HOME': '/usr/share/cmf', 'CDH_IMPALA_HOME': '/usr/lib/impala', 'CDH_YARN_HOME': '/usr/lib/hadoop-yarn', 'CDH_HDFS_HOME': '/usr/lib/hadoop-hdfs', 'PATH': '/sbin:/usr/sbin:/bin:/usr/bin', 'CDH_HUE_PLUGINS_HOME': '/usr/lib/hadoop', 'CM_STATUS_CODES': u'STATUS_NONE HDFS_DFS_DIR_NOT_EMPTY HBASE_TABLE_DISABLED HBASE_TABLE_ENABLED JOBTRACKER_IN_STANDBY_MODE YARN_RM_IN_STANDBY_MODE', 'KEYTRUSTEE_KP_HOME': '/usr/share/keytrustee-keyprovider', 'CLOUDERA_ORACLE_CONNECTOR_JAR': '/usr/share/java/oracle-connector-java.jar', 'CDH_SQOOP2_HOME': '/usr/lib/sqoop2', 'KEYTRUSTEE_SERVER_HOME': '/usr/lib/keytrustee-server', 'CDH_MR2_HOME': '/usr/lib/hadoop-mapreduce', 'HIVE_DEFAULT_XML': '/etc/hive/conf.dist/hive-default.xml', 'CLOUDERA_POSTGRESQL_JDBC_JAR': '/usr/share/cmf/lib/postgresql-9.0-801.jdbc4.jar', 'CDH_KMS_HOME': '/usr/lib/hadoop-kms', 'CDH_HBASE_HOME': '/usr/lib/hbase', 'CDH_SQOOP_HOME': '/usr/lib/sqoop', 'WEBHCAT_DEFAULT_XML': '/etc/hive-webhcat/conf.dist/webhcat-default.xml', 'CDH_OOZIE_HOME': '/usr/lib/oozie', 'CDH_ZOOKEEPER_HOME': '/usr/lib/zookeeper', 'CDH_HUE_HOME': '/usr/lib/hue', 'CLOUDERA_MYSQL_CONNECTOR_JAR': '/usr/share/java/mysql-connector-java.jar', 'CDH_HBASE_INDEXER_HOME': '/usr/lib/hbase-solr', 'CDH_MR1_HOME': '/usr/lib/hadoop-0.20-mapreduce', 'CDH_SOLR_HOME': '/usr/lib/solr', 'CDH_PIG_HOME': '/usr/lib/pig', 'CDH_SENTRY_HOME': '/usr/lib/sentry', 'CDH_CRUNCH_HOME': '/usr/lib/crunch', 'CDH_LLAMA_HOME': '/usr/lib/llama/', 'CDH_HTTPFS_HOME': '/usr/lib/hadoop-httpfs', 'CDH_HADOOP_HOME': '/usr/lib/hadoop', 'CDH_HIVE_HOME': '/usr/lib/hive', 'CDH_HCAT_HOME': '/usr/lib/hive-hcatalog', 'CDH_KAFKA_HOME': '/usr/lib/kafka', 'CDH_SPARK_HOME': '/usr/lib/spark', 'TOMCAT_HOME': '/usr/lib/bigtop-tomcat', 'CDH_FLUME_HOME': '/usr/lib/flume-ng'} [25/Jul/2016 16:21:58 +0000] 7453 MainThread agent INFO To override these variables, use /etc/cloudera-scm-agent/config.ini. Environment variables for CDH locations are not used when CDH is installed from parcels. [25/Jul/2016 16:21:58 +0000] 7453 MainThread agent INFO Re-using pre-existing directory: /var/run/cloudera-scm-agent/process [25/Jul/2016 16:21:58 +0000] 7453 MainThread agent INFO Re-using pre-existing directory: /var/run/cloudera-scm-agent/supervisor [25/Jul/2016 16:21:58 +0000] 7453 MainThread agent INFO Re-using pre-existing directory: /var/run/cloudera-scm-agent/flood [25/Jul/2016 16:21:58 +0000] 7453 MainThread agent INFO Re-using pre-existing directory: /var/run/cloudera-scm-agent/supervisor/include [25/Jul/2016 16:21:58 +0000] 7453 MainThread agent ERROR Failed to connect to previous supervisor. Traceback (most recent call last): File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/cmf-5.8.1-py2.6.egg/cmf/agent.py", line 2039, in find_or_start_supervisor self.get_supervisor_process_info() File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/cmf-5.8.1-py2.6.egg/cmf/agent.py", line 2185, in get_supervisor_process_info self.identifier = self.supervisor_client.supervisor.getIdentification() File "/usr/lib64/python2.6/xmlrpclib.py", line 1199, in __call__ return self.__send(self.__name, args) File "/usr/lib64/python2.6/xmlrpclib.py", line 1489, in __request verbose=self.__verbose File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/supervisor-3.0-py2.6.egg/supervisor/xmlrpc.py", line 460, in request self.connection.request('POST', handler, request_body, self.headers) File "/usr/lib64/python2.6/httplib.py", line 914, in request self._send_request(method, url, body, headers) File "/usr/lib64/python2.6/httplib.py", line 951, in _send_request self.endheaders() File "/usr/lib64/python2.6/httplib.py", line 908, in endheaders self._send_output() File "/usr/lib64/python2.6/httplib.py", line 780, in _send_output self.send(msg) File "/usr/lib64/python2.6/httplib.py", line 739, in send self.connect() File "/usr/lib64/python2.6/httplib.py", line 720, in connect self.timeout) File "/usr/lib64/python2.6/socket.py", line 567, in create_connection raise error, msg error: [Errno 111] Connection refused [25/Jul/2016 16:21:58 +0000] 7453 MainThread tmpfs INFO Reusing mounted tmpfs at /var/run/cloudera-scm-agent/process [25/Jul/2016 16:21:58 +0000] 7453 MainThread agent INFO Deleting stale supervisor include /var/run/cloudera-scm-agent/supervisor/include/flood.conf. [25/Jul/2016 16:21:59 +0000] 7453 MainThread agent INFO Trying to connect to newly launched supervisor (Attempt 1) [25/Jul/2016 16:21:59 +0000] 7453 MainThread agent INFO Supervisor version: 3.0 [25/Jul/2016 16:21:59 +0000] 7453 MainThread agent INFO Successfully connected to supervisor [25/Jul/2016 16:21:59 +0000] 7453 MainThread status_server INFO Using maximum impala profile bundle size of 1073741824 bytes. [25/Jul/2016 16:21:59 +0000] 7453 MainThread status_server INFO Using maximum stacks log bundle size of 1073741824 bytes. [25/Jul/2016 16:21:59 +0000] 7453 MainThread _cplogging INFO [25/Jul/2016:16:21:59] ENGINE Bus STARTING [25/Jul/2016 16:21:59 +0000] 7453 MainThread _cplogging INFO [25/Jul/2016:16:21:59] ENGINE Started monitor thread '_TimeoutMonitor'. [25/Jul/2016 16:22:00 +0000] 7453 MainThread _cplogging INFO [25/Jul/2016:16:22:00] ENGINE Serving on cdh03.ts.verticacorp.com:9000 [25/Jul/2016 16:22:00 +0000] 7453 MainThread _cplogging INFO [25/Jul/2016:16:22:00] ENGINE Bus STARTED [25/Jul/2016 16:22:00 +0000] 7453 MainThread __init__ INFO New monitor: (<cmf.monitor.host.HostMonitor object at 0x256eb10>,) [25/Jul/2016 16:22:00 +0000] 7453 MonitorDaemon-Scheduler __init__ INFO Monitor ready to report: ('HostMonitor',) [25/Jul/2016 16:22:00 +0000] 7453 MainThread agent INFO Setting default socket timeout to 30 [25/Jul/2016 16:22:00 +0000] 7453 MainThread heartbeat_tracker INFO HB stats (seconds): num:1 LIFE_MIN:0.07 min:0.07 mean:0.07 max:0.07 LIFE_MAX:0.07 [25/Jul/2016 16:22:00 +0000] 7453 MainThread agent INFO Using parcels directory from server provided value: /opt/cloudera/parcels [25/Jul/2016 16:22:00 +0000] 7453 MainThread parcel INFO Agent does create users/groups and apply file permissions [25/Jul/2016 16:22:00 +0000] 7453 MainThread downloader INFO Downloader path: /opt/cloudera/parcel-cache [25/Jul/2016 16:22:00 +0000] 7453 MainThread parcel_cache INFO Using /opt/cloudera/parcel-cache for parcel cache [25/Jul/2016 16:22:00 +0000] 7453 MainThread agent INFO Flood daemon (re)start attempt [25/Jul/2016 16:22:00 +0000] 7453 MainThread agent INFO Triggering supervisord update. [25/Jul/2016 16:22:00 +0000] 7453 MainThread downloader ERROR Failed rack peer update: [Errno 111] Connection refused ... View more