Check your .ini file on all the slaves/agents /etc/ambari-agent/conf/ambari-agent.ini And then make sure your ports below are open on your MASTER url_port=8440 secured_url_port=8441 ... View more

Hi: I need to know if i can delete from database the extra row, also the skip_sc_failures column with value =1 is error or ok?? ambari=> select * from upgrade; upgrade_id | cluster_id | request_id | from_version | to_version | direction | downgrade_allowed | skip_failures | skip_sc_failures | upgrade_pac kage | upgrade_type ------------+------------+------------+--------------+--------------+-----------+-------------------+---------------+------------------+--------------- ---------+-------------- 1 | 2 | 820 | 2.3.2.0-2950 | 2.4.0.0-169 | UPGRADE | 1 | 1 | 0 | nonrolling-upg rade-2.4 | NON_ROLLING 2 | 2 | 821 | 2.3.2.0-2950 | 2.3.2.0-2950 | DOWNGRADE | 1 | 0 | 0 | nonrolling-upg rade-2.4 | NON_ROLLING 3 | 2 | 894 | 2.3.2.0-2950 | 2.4.0.0-169 | UPGRADE | 1 | 1 | 1 | nonrolling-upg rade-2.4 | NON_ROLLING ... View more

Refer following documentation for Host Config Groups http://docs.hortonworks.com/HDPDocuments/Ambari-2.1.2.0/bk_Ambari_Users_Guide/content/_using_host_config_groups.html ... View more