今天我也遇到了這個問題,重啟也沒有解決，后來按照下面的大神發(fā)現(xiàn)原因是有一個幾點的免密有問題佳头。
大神Balkrushna Patil的答案
We need to make sure below point in heart beat lost host.
check firewall status. It should be stop.
service iptables stop
check /etc/ambari-agent/conf/ambari-agent.ini file.
in ambari-agent file hostname entry should be
hostname = ambariservernodehost
ambariservernodehost should be present in /etc/hosts file
openssl version should be upgraded.
Stop ambari-server
Stop ambari-agent service on all nodes
Start ambari-agent service on all nodes
Start ambari-server server
