@Zyann You can add Livy Server to any of your cluster host using Ambari as followng: Ambari UI --> Hosts (Tab) --> click on your desired Host link --> On the Hosts page you will see "Add" button as following Just choose "Livy for Spark2 Server" . ... View more

Hi @Zyann , Heartbeat lost means ambari-agent is not connected to ambari-server. can you see the status of ambari-agent on the problamatic host using the command : [root@aanaik1 ~]# ambari-agent status Found ambari-agent PID: 3516 ambari-agent running. If its not running you can start it.if its running, please see in [root@aanaik1 ~]# tail -f /var/log/ambari-agent/ambari-agent.log whether its able to send heartbeat to ambari-server or not. Hope this helps you ... View more

@Zyann You will need to make sure that you imported the HDFS certificates to ambari server truststore. You can refer to the following doc to know more about it: https://docs.hortonworks.com/HDPDocuments/Ambari-2.6.2.2/bk_ambari-security/content/set_up_truststore_for_ambari_server.html Choose Option [4] to setup truststore and then next time choose option [5] to import HDFS certification to ambari truststore. # ambari-server setup-security . . [4] Setup truststore. [5] Import certificate to truststore. . ... View more