PG::ConnectionBad fe_sendauth: no password supplied

When i created a droplet ubuntu 16 rails one click with rails 5 “PG::ConnectionBad fe_sendauth: no password supplied” , new york or san francisco options or anywhere.

If a tried to do “rails db:migrate” show me this error …i tried to create another super user and change the credentials from database.yaml but continues with the same error

in some posts the people say that is an error when the doplet is created

How i can resolved? please this si the second droplet that i created

p.d : sorry for my english , i speack spanish

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Andy Hattemer
DigitalOcean Employee
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May 14, 2020
Pinned Answer

If you look in your config/database.yml file, you are probably specifying localhost as the database host name, and you are probably not supplying a password.

Using localhost automatically switches the connection to a TCP connection, and by default in postgres, TCP connection auth method is md5 (password required).

Here are two ways to solve:

Switch to UNIX Socket connection - If you’re just running the postgres db in the same VM as Rails, you can switch from TCP to UNIX Socket connection by removing localhost from the host parameter in config/database.yml:


  adapter: postgresql
  host: localhost


  adapter: postgresql
  host: ''

Specify a Password: - If you need to connect over TCP, make sure the username you are using in config/database.yml is configured in postgres and set a password by connecting to the postgres db from the command line and running:

ALTER USER postgres PASSWORD 'myPassword';

and then specify the same password in your config/database.yml file:

  adapter: postgresql
  host: localhost
  password: 'myPassword'

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