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Editorial Team
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Asked: 2026-05-26T05:01:52+00:00

I got my new lion machine. Ran the PostgreSQL installer from the PostgreSQL site

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I got my new lion machine. Ran the PostgreSQL installer from the PostgreSQL site for Mac and i have no multiple apps installed. One of them is “pgAdmin III.app”. When I open it there is already one server connection available. localhost:5432

Whenever I try to connect to the server with a doubleclick the programm asks me for a password. I have no idea what to enter. It’s not my admin password, it’s not “postgres”, it’s not “localhost”, it’s not empty.

I just can’t seem to connect to the server. Even when I check the properties of the localhost server the password field seems empty. However I’m not allowed to leave the password field empty.

Any idea what to do? I really need to setup postgres?

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  1. Editorial Team

    Haven’t tried it on OSX, but on Ubuntu you can login as the system user ‘postgres’ to the default database ‘postgres’ without a password with

    su postgres -c psql

    You can then (re)set the password of the database superuser ‘postgres’.

    You can also edit the configuration file pg_hba.conf (don’t know where it is located on a default OSX installation, on Ubuntu it is /etc/postgresql/8.4/main/pg_hba.conf) and grant access to the default database without authentication

    # TYPE  DATABASE    USER        CIDR-ADDRESS          METHOD
host    postgres    postgres    127.0.0.1/32          trust

    After editing pg_hba.conf you must reload the configuration with

    pg_ctlcluster 8.4 main reload

    You can then connect with pgAdmin and (re)set the password, but don’t forget to change the authentication method back to md5 again…

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