you entered as the Postgres user, it seems that not because he says :
*postgres=>*
When you enter with the postgres user, it is: *postgres=# *
2018-02-23 20:26 GMT-03:00 Gopi G <gopiputty(at)gmail(dot)com>:
> I have postgres 9.2 running in AWS EC2 (aws linux) instance.
> I followed documentation and tried to do
>
> postgres=> ALTER USER Postgres WITH PASSWORD 'password';
>
> ERROR: must be superuser to alter replication users
>
>
> surprisingly I am not finding any way to solve this problem.
> and how do I login using 'postgres' linux os user that is created when I
> installed postgres 9.2?
>
> gopi
>