Error when deploying with Capistrano 3

[Himadri Ganguly]

When trying to deploy with Capistrano 3 (cap production deploy:sitemap:refresh) it gives the following error

DEBUG [b73ccd27] config.eager_load is set to nil. Please update your config/environments/*.rb files accordingly:
DEBUG [b73ccd27]
DEBUG [b73ccd27] * development - set it to false
DEBUG [b73ccd27] * test - set it to false (unless you use a tool that preloads your test environment)
DEBUG [b73ccd27] * production - set it to true
DEBUG [b73ccd27]
DEBUG [b73ccd27] rake aborted!
DEBUG [b73ccd27] ActiveRecord::AdapterNotSpecified: '' database is not configured. Available: ["default", "production"]
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activerecord-4.1.0/lib/active_record/connection_adapters/connection_specification.rb:257:in resolve_symbol_connection' DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activerecord-4.1.0/lib/active_record/connection_adapters/connection_specification.rb:224:inresolve_connection'
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activerecord-4.1.0/lib/active_record/connection_adapters/connection_specification.rb:152:in resolve' DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activerecord-4.1.0/lib/active_record/connection_adapters/connection_specification.rb:182:inspec'
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activerecord-4.1.0/lib/active_record/connection_handling.rb:50:in establish_connection' DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activerecord-4.1.0/lib/active_record/railtie.rb:129:inblock (2 levels) in class:Railtie'
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activesupport-4.1.0/lib/active_support/lazy_load_hooks.rb:38:in instance_eval' DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activesupport-4.1.0/lib/active_support/lazy_load_hooks.rb:38:inexecute_hook'
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activesupport-4.1.0/lib/active_support/lazy_load_hooks.rb:28:in block in on_load' DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activesupport-4.1.0/lib/active_support/lazy_load_hooks.rb:27:ineach'
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activesupport-4.1.0/lib/active_support/lazy_load_hooks.rb:27:in on_load' DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activerecord-4.1.0/lib/active_record/railtie.rb:118:inblock in class:Railtie'
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/railties-4.1.0/lib/rails/initializable.rb:30:in instance_exec' DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/railties-4.1.0/lib/rails/initializable.rb:30:inrun'
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/railties-4.1.0/lib/rails/initializable.rb:55:in block in run_initializers' DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/railties-4.1.0/lib/rails/initializable.rb:54:inrun_initializers'
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/railties-4.1.0/lib/rails/application.rb:288:in initialize!' DEBUG [b73ccd27] /var/www/[APP_NAME]/releases/20140604061057/config/environment.rb:5:in<top (required)>'
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:247:in require' DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:247:inblock in require'
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:232:in load_dependency' DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:247:inrequire'
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/railties-4.1.0/lib/rails/application.rb:264:in require_environment!' DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/railties-4.1.0/lib/rails/application.rb:367:inblock in run_tasks_blocks'
DEBUG [b73ccd27] /var/www/[APP_NAME]/shared/bundle/ruby/2.1.0/gems/sitemap_generator-5.0.4/lib/sitemap_generator/tasks.rb:26:in `block (2 levels) in <top (required)>'
DEBUG [b73ccd27] Tasks: TOP => environment
DEBUG [b73ccd27](See full trace by running task with --trace)

although config.eager_load is set to true in production.rb

[Karl Varga]

The problem appears to be that the environment is not being detected/loaded. As a result, the database is not being configured and so you get this error ActiveRecord::AdapterNotSpecified: '' database is not configured. Available: ["default", "production"].

I've not actually used the Capistrano deploy tasks myself.

[Himadri Ganguly]

Hi buddy thanks for reply.

But the environment is configured as all other work is working fine but only the sitemap is not working. I also added crontab with whenever as instructed in the manual as
every 1.day, :at => '5:00 am', :roles => [:app] do
rake "-s sitemap:refresh"
end
it is added in the crontab but not running

[Pedro Rodriguez]

I ran into this issue and think I have a theory about what is going on. I am going to make a fork, attempt the fix, then will report back if it worked. If so, I can do a pull request.

If you take a look here: https://github.com/kjvarga/sitemap_generator/blob/master/lib/capistrano/tasks/sitemap_generator.cap at the cap tasks, it has something like this for all of them:

with rails_env: fetch(:rails_env) do
    execute :rake, "sitemap:create"
end

I took a look at the source code for capistrano that sets the environment, which you can find here:
https://github.com/capistrano/rails/blob/master/lib/capistrano/tasks/set_rails_env.rake
which looks something like this:

namespace :deploy do
  task :set_rails_env do
    set :rails_env, (fetch(:rails_env) || fetch(:stage))
  end
end

Specifically, note that it fetches the stage. I think that since capistrano 3 uses stage more than environment (production vs staging ex), that the environment is not setting the produciton mode, but that the stage is suppose to. I am thinking it would be pretty easy to fix those capistrano tasks to read something like this:

with rails_env: (fetch(:rails_env) || fetch(:stage)) do
    execute :rake, "sitemap:create"
end

[Pedro Rodriguez]

Tested the proposed fix and it works. I created a pull request with the change.

[Karl Varga]

Thanks! In v5.0.5