Installed Ambari 184.108.40.206 on RHEL 7.3. It installed posgresql rpm packages. But used MySQL database and installation and setup completed successfully.
Before starting Ambari-server removed postgresql packages with --nodeps option as they are not used.
But ambari-server fail to start with the below error though MySQL is used as backend database.
ambari_commons.exceptions.FatalException: 'Fatal exception: Cannot find postgresql-setup script., exit code 1'
Is it possible to get around this error? We have to delete postgresql rpms.