mix ecto.create fails (** (Postgrex.Error) FATAL 28000 (invalid_authorization_specification) Ident authentication failed for user "postgres)

Question

11:06:04.676 [error] GenServer #PID<0.290.0> terminating
** (Postgrex.Error) FATAL 28000 (invalid_authorization_specification) Ident authentication failed for user "postgres"
    (db_connection 2.4.1) lib/db_connection/connection.ex:100: DBConnection.Connection.connect/2
    (connection 1.1.0) lib/connection.ex:622: Connection.enter_connect/5
    (stdlib 3.17) proc_lib.erl:226: :proc_lib.init_p_do_apply/3
Last message: nil
State: Postgrex.Protocol

11:06:04.695 [error] GenServer #PID<0.297.0> terminating
** (Postgrex.Error) FATAL 28000 (invalid_authorization_specification) Ident authentication failed for user "postgres"
    (db_connection 2.4.1) lib/db_connection/connection.ex:100: DBConnection.Connection.connect/2
    (connection 1.1.0) lib/connection.ex:622: Connection.enter_connect/5
    (stdlib 3.17) proc_lib.erl:226: :proc_lib.init_p_do_apply/3
Last message: nil
State: Postgrex.Protocol
** (Mix) The database for Helloworld.Repo couldn't be created: killed

I already tried everything. I am on Fedora 35, i did all that the official Fedora PostgreSQL docs said. I changed the pg_hba.conf for this:

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     peer
# IPv4 local connections:
host    all             all             127.0.0.1/32            ident
# IPv6 local connections:
host    all             all             ::1/128                 md5
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     all                                     peer
host    replication     all             127.0.0.1/32            ident
host    replication     all             ::1/128                 ident

I setted a password for the user postgres, i initialize it, and nothing happens.

I browsed through some 10 questions here on StackOverflow and none of the solutions works.

Any help?

Answer 1

Simply replace ident with md5 in pg_hba.conf and reload PostgreSQL, then you can use password authentication for localhost connections.