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Issue with Ambari DB authentication


I'm trying to setup Ambari server in AWS EC2 [single node setup]. After setting up Ambari successfully, while running the same I'm getting postgres db authentication issue as follow.

Caused by: org.postgresql.util.PSQLException: FATAL: password authentication failed for user "ambari-server" also [refer to the image attached]

As a part of debugging I've cross verified /etc/ambari-server/conf/ambari-server.log file and /etc/ambari-server/conf/password.dat which are properly configured. Using /etc/ambari-server/conf/password.dat I can login to postgresql server from the same EC2 instance where the Ambari Server is configured.

Can someone please help me in this regard?

Thanks and Regards,

Aditya Hegde