Unable to add a new connection to server in PostgreSQL using pgAdmin

Question

I am new to PostgreSQL and trying to configure it. After installing the PostgreSQL. I am trying to add a new connection to server using pgAdmin. I know there is a by default created on port 5432 but I change this port to 5433. And trying to configure all my database on this port. And through terminal this is working.

But when I am trying to add a new connection to a server it throws

09:56:56: Error: Error connecting to the server: FATAL:  password authentication failed for user "tars"
FATAL:  password authentication failed for user "tars"

I have already followed this thread here. And also tried configuring pg_hba.conf. Changed this line

local   all             all                                     peer

to

local   all             all                                     md5

But couldn't add a new connection. This is the screenshot, the way I am trying to configure

Can someone help me to create a new server ? And also help me to understand this little bit.

Answer 1

It seem like you are connection via termial to port 5432 as command psql on terminal directly connect to default port 5432

Try connecting to database via terminal using below

psql -p 5433

After connected, change user password

alter role tars with password 'tars'; --if role in not present create one with create role tar with superuser; 
alter role tars with login;

now go to pgadmin and change the following :

on maintenance db put "postgres"
on user put "tar"
on password put "tar"

and try connecting if still kindly lemme know the below things :

1) Can u list contents of pg_hba.conf and postgresql.conf file ?

2) Also how u changed port number via postgresql.conf or created another cluster ?