Refer to my post here >> Bahmni 0.92 ,pgdg-centos92-9.2-7.noarch.rpm deprecated.
pgdg-centos92-9.2-7.noarch.rpm is deprecated ,
override the default postgress rpm repo name in
/etc/bahmni-installer/setup.yml
with the latest available release
postgres_repo_rpm_name: pgdg-redhat-repo-latest.noarch.rpm