PG::ConnectionBad: fe_sendauth: no password supplied

Question

When I attempt to run \"rake test\" on a local postgres database, it throws the above exception.

Here is my pg_hba.conf file: # Database administrative login by

Answer 1

I had this problem, solved by a coworker: You need to set a local user and password in postgres

createuser --interactive --pwprompt

It will ask you for the name of the role (the user) and the password you want to have.

Then you have to add this username and password to your database.yml file

Answer 2

localhost as a host refers to a TCP connection, which means the auth method is md5 (password required) per your pg_hba.conf:

# IPv4 local connections:
host    all             all             127.0.0.1/32            md5
# IPv6 local connections:
host    all             all             ::1/128                 md5

For the peer method to be taken, you'd need to connect through Unix domain sockets, and since you seem to be using a debian-like OS, that means putting /var/run/postgresql in the host field, or nothing at all (it's the default unless environment variables say otherwise).

EDIT: if using database URIs (supported since Rails-4.1, as announced in http://weblog.rubyonrails.org/2014/4/8/Rails-4-1/), the syntax could be:

• for localhost:
  test: "postgresql://localhost/myapp_test"

• for the default Unix socket domain (host field left empty):
  test: "postgresql:///myapp_test"

Answer 3

I met this question, too. I checked my database config, /var/www/myproject/shared/config/database.yml:

production: 
adapter: postgresql 
pool: 5 
timeout: 5000 
encoding: utf8 
host: localhost 
database: myproject
username: myname 
password: <%= ENV['name_DATABASE_PASSWORD'] %>

I found the last paragraph is wrong, the right code is

password: <%= ENV['myproject_DATABASE_PASSWORD'] %>

Answer 4

Change the code as below and it will work

pg_hba.conf:
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
# IPv6 local connections:
host    all             all             ::1/128                 trust

Below its explanation:

trust

Allow the connection unconditionally. This method allows anyone that can connect to the PostgreSQL database server to login as any PostgreSQL user they wish, without the need for a password or any other authentication.

md5

Require the client to supply a double-MD5-hashed password for authentication.

refer for more here

Answer 5

If your hb_conf has already been modified to force passwords, then make sure your rails app's database configuration includes a password in both development and test environments.

default: &default
  adapter: postgresql
  encoding: unicode
  pool: 5
  host: localhost
  username: your_user
  password: your_password

development:
  <<: *default
  database: your_db_development

test:
  <<: *default
  database: your_db_test

production:
  url: <%= ENV['DATABASE_URL'] %>

I was getting this error when I failed to supply a password for the test database.

Answer 6

I use Postgres App. Which is really great because you don't have to supply username and password in the default part of the database.yml

database.yml

default: &default
  adapter: postgresql
  encoding: unicode
  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>

development:
  <<: *default
  database: my-app_development

test:
  <<: *default
  database: my-app_test

production:
  <<: *default
  database: my-app_production
  username: my-app
  password: <%= ENV['MY-APP_DATABASE_PASSWORD'] %>

My problem: I changed the path and wasn't able to get postgres to work.

Solution: use the documentation to:

1) Uninstall the app

2) Stop the postgres process using this answer, which says to use sudo pkill -u postgres

3) Reinstall and start the app

Everything should work fine now, have a great day!

Note: Doing this also solves the problem Postgres.app port 5432 in use