@easyoups Basically the error is : ERROR 2019-02-15 14:25:45,085 NetUtil.py:96 - EOF occurred in violation of protocol (_ssl.c:618) . This error cause is explained in detail in the following Article: https://community.hortonworks.com/articles/188269/javapython-updates-and-ambari-agent-tls-settings.html To solve this problem simply configure the Ambari Agent to use TLSv1.2 when communicating with the Ambari Server by editing each Ambari Agent’s /etc/ambari-agent/conf/ambari-agent.ini file and adding the following configuration property to the security section: [security] force_https_protocol=PROTOCOL_TLSv1_2 Once this configuration change has been made, the Ambari Agent needs to be restarted. After restarting you should no longer see the ERROR’s in the Ambari Agent logs, and in the Ambari Server UI you’ll notice that all Ambari Agents are once again heartbeating. ... View more

Just to confirm, all these steps were done? https://docs.hortonworks.com/HDPDocuments/Ambari-2.4.2.0/bk_ambari-reference/content/how_to_customize_the_name_of_a_host.html ... View more

Of course you're right. I was thinking that this property was inherited from the server but it is a consumer feature. It worked as wished now... I still have an issue when I want to personalize the offset topic : [2016-06-08 05:20:02,664] WARN Property offset.storage.topic is not valid (kafka.utils.VerifiableProperties) I will investigate, but if I ignore this property and use the default topic __consumer_offsets it works fine. Thk a lot for your clarification. ... View more