Re: [External] How to revoke privileged from PostgreSQL's superuser

I am not sure superuser can be selectively restricted via queries, but I am not sure, have not tried.

But maybe you can try restricting the super user access to the db from all hosts via the pg_hba.conf.

Fore eg. I have a user

monitor            | Superuser

and

in my /etc/postgresql/10/main/pg_hba.conf

host pgtesting monitor 0.0.0.0/0       reject

and then

psql -U monitor -p 5432 -d pgtesting -h 127.0.0.1

psql: FATAL:  pg_hba.conf rejects connection for host "127.0.0.1", user "monitor", database "pgtesting", SSL on

FATAL:  pg_hba.conf rejects connection for host "127.0.0.1", user "monitor", database "pgtesting", SSL off

psql -U monitor -p 5432 -d pgtesting -h localhost

psql: FATAL:  pg_hba.conf rejects connection for host "127.0.0.1", user "monitor", database "pgtesting", SSL on

FATAL:  pg_hba.conf rejects connection for host "127.0.0.1", user "monitor", database "pgtesting", SSL off

psql -U monitor -p 5432 -d pgtesting -h 173.16.6.3

psql: FATAL:  pg_hba.conf rejects connection for host "173.16.6.3", user "monitor", database "pgtesting", SSL on

FATAL:  pg_hba.conf rejects connection for host "173.16.6.3", user "monitor", database "pgtesting", SSL off

https://stackoverflow.com/questions/38942868/revoke-superuser-connect-a-specific-database

Thanks,

Vijay