Question

Rails with Postgresql: Problem running rake db:migrate in production

Posted August 9, 2014 18.4k views

I have built a rails app on my local machine and would like to deploy it, following the tutorial here: https://www.digitalocean.com/community/tutorials/how-to-launch-your-ruby-on-rails-app-with-the-digitalocean-one-click-image

However, after uploading the whole app through SFTP, creating a postgresql user named ‘postgres’ (I did this to get around the peer authentication error), running the command
RAILS_ENV=production rake db:migrateas the UNIX user postgres gave me the following errors:

Rails Error: Unable to access log file. Please ensure that /home/rails/log/production.log exists and is chmod 0666. The log level has been raised to WARN and the output directed to STDERR until the problem is fixed.
rake aborted!
Errno::EACCES: Permission denied - /home/rails/db/schema.rb

I have spent quite a bit of time googling around but no luck. Please help.

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3 answers
asb August 11, 2014

The issue you’re seeing is due to the fact that you are running the command as the user postgres who doesn’t have permissions to access /home/rails/db/schema.rb Instead of running rake as the UNIX user postgres, create a postgres user/password for your Rails app:

sudo -u postgres psql
create role myapp_user with createdb login password 'db_password';

Then in your database.yml file:

development:
  adapter: postgresql
  encoding: unicode
  database: myapp_development
  pool: 5
  username: myapp_user
  password: db_password

test:
  adapter: postgresql
  encoding: unicode
  database: myapp_test
  pool: 5
  username: myapp_user
  password: db_password

production:
  adapter: postgresql
  encoding: unicode
  database: myapp_test
  pool: 5
  username: myapp_user
  password: db_password
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abhinaykumar June 9, 2015

@asb I am having the same issue even after following this solution. it still says:

deploy@TTP:/srv/ttp$ rake db:migrate
rake aborted!
Errno::EACCES: Permission denied @ rb_sysopen - /srv/ttp/db/schema.rb
/usr/local/rvm/gems/ruby-2.2.2/gems/activerecord-4.2.0/lib/active_record/railties/databases.rake:236:in `initialize'
/usr/local/rvm/gems/ruby-2.2.2/gems/activerecord-4.2.0/lib/active_record/railties/databases.rake:236:in `open'
/usr/local/rvm/gems/ruby-2.2.2/gems/activerecord-4.2.0/lib/active_record/railties/databases.rake:236:in `block (3 levels) in <top (required)>'
/usr/local/rvm/gems/ruby-2.2.2/gems/activerecord-4.2.0/lib/active_record/railties/databases.rake:50:in `block (2 levels) in <top (required)>'
/usr/local/rvm/gems/ruby-2.2.2/gems/activerecord-4.2.0/lib/active_record/railties/databases.rake:45:in `block (2 levels) in <top (required)>'
Tasks: TOP => db:schema:dump
(See full trace by running task with --trace)

Can you help me on this.

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jaswindersinghsn97 February 21, 2017

You need to change app folder files permission as:

sudo chown -R jsingh /var/www/

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