Hi Jay, thank you for your reply. The ambari server host is merlin-0 [root@merlin-0 ~]# hostname -f
merlin-0.zxcomputers.com
[root@merlin-0 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.17.10 merlin-0.zxcomputers.com merlin-0
192.168.17.11 merlin-1.zxcomputers.com merlin-1
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