If you are using password authentication, then you may wish to change your password from time to time.
The most basic method is to use psql. The
\password command will prompt you for a new password, and then again to confirm. Connect to psql, and type the following:
Enter new password.
This causes psql to send an SQL statement to the PostgreSQL server containing an already encrypted password string. An example of the SQL statement sent is as follows:
ALTER USER postgres PASSWORD ' md53175bce1d3201d16594cebf9d7eb3f9d';
Whatever you do, don't use "postgres" as your password. This will make you vulnerable to idle hackers, so make it a little more difficult than that, please.
Make sure you don't ...