How to set up Postgres database for local Rails project?

ruby-on-rails postgresql ubuntu postgresql-9.1 rails-postgresql

42,427

Solution 1

firstly, install postgresql

sudo add-apt-repository ppa:pitti/postgresql
sudo apt-get update

#now install postgresql
sudo apt-get install postgresql-9.1 libpq-dev

create a new user in psql

sudo su postgres
createuser user_name #Shall the new role be a superuser? (y/n) y

Gemfile

gem 'pg'

bundle install

development.yml

development:
  adapter: postgresql
  database: app_development
  pool: 5
  username: user_name
  password:

Solution 2

I came across your question when looking for the same answer. I attempted to follow the instructions @prasad.surase gave you. The problem I found is the ppa repository is going to depreciate soon on 12.04 LTS. Instead I found this link and it really helped.

PostgreSQL setup for Rails development in Ubuntu 12.04

Install postgresql and admin tools through the package manager

sudo apt-get install postgresql libpq-dev phppgadmin pgadmin3

Create a postgresql user for your project

create user username with password 'password';

Setup your postgres user with the same name and password as your Ubuntu user and make him a postgres superuser
```
alter user username superuser; 
```

Create the development and test databases

create database projectname_development;
create database projectname_test;

Give permissions to the user on the databases

grant all privileges on database projectname_development to username;
grant all privileges on database projectname_test to username;

To end the postgresql session type \q

Update password for the user

alter user username with password ‘new password’;

Solution 3

You follow this link http://www.cyberciti.biz/faq/howto-add-postgresql-user-account/

to create a postgres user and replace the credentials in database.yml

42,427

Author by

Connor Leech

Updated on January 18, 2020

Comments

Connor Leech over 4 years
I recently got a new machine and would now like to work on my projects from Github. I'm curious as to how to properly set up the Postgres database on my local machine. I have postgresql, pgadmin3 and libpq-dev installed on Ubuntu (12.04).

I pull down the project:

git clone https://github.com/thebenedict/cowsnhills.git

and run:

bundle.

When I run:

rake db:create && rake db:schema:load

I get this error:
```
rake db:create && rake db:schema:load
FATAL:  password authentication failed for user "cnh"
FATAL:  password authentication failed for user "cnh"
....
```
The config/database.yml file looks like this:
```
development:
  adapter: postgresql
  encoding: unicode
  host: localhost
  database: cnh_development
  pool: 5
  username: cnh
  password: cnh

test:
  adapter: postgresql
  encoding: unicode
  host: localhost
  database: cnh_test
  pool: 5
  username: cnh
  password: cnh

production:
  adapter: postgresql
  encoding: unicode
  host: localhost
  database: cnh_production
  pool: 5
  username: cnh
  password: cnh
```
What's the proper way to set up the Postgres database so I can run this project on my local machine?

Right now when I start the Rails server I get:
Connor Leech over 10 years

I also had to create database app_development owner user_name; and then alter user_name password 'password';
prasad.surase over 10 years

no need to do it that way. use rake db:create, rake db:migrate . u can simply do rake db:setup to create and migrate.
Axel Tetzlaff almost 9 years

execute createuser with -W to force a password prompt createuser -s -W user_name. Otherwise it may not ask you for one und you will have to set it afterwards with the ALTER-Statement