2016
https://blog.bigbinary.com/2016/01/23/configure-postgresql-to-allow-remote-connection.html

.../data/postgresql.conf
...
listen_addresses = '*'
...

.../data/pg_hba.conf
host    all             all             all           md5
...
!!!
host    all             all             all           trust

check by:
psql -h localhost -U postgres

PGPASSWORD=pgpass psql -h localhost -U postgres