Install PostgreSQL and create some_user into Postgres

gistfile1.sh

# sudo apt-get install postgresql libpq-dev postgresql-contrib


$ sudo -u postgres createuser some_user
$ cd /etc/init.d/
$ sudo -u postgres psql template1
template1=# ALTER USER some_user WITH PASSWORD 'some_password';


# Edit
vim /etc/postgresql/9.1/main/pg_hba.conf

# Database administrative login by Unix domain socket
# local   all             some_user .....