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PONo password prompt for postgresql superuser
 

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    <p>After I installed PostgreSQL 9.1 on Ubuntu 12.04 I set the password for the "postgres" superuser account. I want all users to have to enter their password when loging in. This is why I configured pg_hba.conf like so:</p> <pre><code>#Database administrative login by Unix domain socket local all postgres md5 # TYPE DATABASE USER ADDRESS METHOD # "local" is for Unix domain socket connections only local all all md5 </code></pre> <p>I restarted postgresql after making those changes. When I do this <code>psql -U testuser</code> I get asked for a password, but when I log in with the "postgres" account like so <code>psql -U postgres</code> I get no password prompt and am logged in. If I force the password prompt with <code>psql -U postgres -W</code> I can log in by typing the correct password or by typing nothing at all. Typing a wrong password gets rejected.</p> <p>Can anybody please explain to me why this is happening?</p> <p>On a related note: I see a lot of example where people use ident as authentication method for the "postgres" user, arguing that to become the "postgres" user one needs the root password of the machine. I assume that the reasoning is that if an attacker gets root access, your done anyways. I would prefer to log in with a password though, one which is not the same as the root password. I prefere having different passwords for different things. Is this reasonable?</p> <p>Output of <code>grep '^[^#]' pg_hba.conf</code></p> <pre><code>local all postgres md5 local all all md5 host all all 127.0.0.1/32 md5 </code></pre>
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