What I got so far:
listen_addresses = '*'
host all all 0.0.0.0/0 md5
In my Flask app, which in running on Heroku, I config the
DATABASE_URL to my droplet that is running the PostgreSQL 9.3:
On the server, I run “netstat -plunt” to see a list of which ports are open:
tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN 12341/postgres
Where did I do wrong? How can I set it up so my Flask app can connect to the database?
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