Capistrano/RVM rake not found - ruby-on-rails

Question

I'm trying to deploy the first rails application using Capistrano.
I'm getting an error while capistrano tries to run rake db:migrate.
To be more clear this is the traceback of the exception:
[ip] executing command
*** [err :: ip] bash: rake: command not found
command finished in 124ms
failed: "env RAILS_ENV=production bash -c 'cd /home/deployer/website/current && rake RAILS_ENV=production db:migrate'" on ip
And this is the config/deploy.rb I'm using actually. On the server I've installed RVM (single user installation).
# config/deploy.rb
$:.unshift(File.expand_path('./lib', ENV['rvm_path']))
require "rvm/capistrano"
set :scm, :git
set :repository, "git#bitbucket.org:user/project.git"
set :branch, "origin/master"
set :migrate_target, :current
set :ssh_options, { :forward_agent => true }
set :rails_env, "production"
set :deploy_to, "/home/deployer/website"
set :normalize_asset_timestamps, false
set :rvm_type, :user # Don't use system-wide RVM
set :rvm_ruby_string, "ruby-1.9.3-p194#global"
set :user, "deployer"
set :group, "staff"
set :use_sudo, false
role :web, "IP"
role :app, "IP"
role :db, "IP2", :primary => true
set(:latest_release) { fetch(:current_path) }
set(:release_path) { fetch(:current_path) }
set(:current_release) { fetch(:current_path) }
set(:current_revision) { capture("cd #{current_path}; git rev-parse --short HEAD").strip }
set(:latest_revision) { capture("cd #{current_path}; git rev-parse --short HEAD").strip }
set(:previous_revision) { capture("cd #{current_path}; git rev-parse --short HEAD#{1}").strip }
default_environment["RAILS_ENV"] = 'production'
default_run_options[:shell] = 'bash'
namespace :deploy do
desc "Deploy your application"
task :default do
update
restart
end
desc "Setup your git-based deployment app"
task :setup, :except => { :no_release => true } do
dirs = [deploy_to, shared_path]
dirs += shared_children.map { |d| File.join(shared_path, d) }
run "#{try_sudo} mkdir -p #{dirs.join(' ')} && #{try_sudo} chmod g+w #{dirs.join(' ')}"
run "git clone #{repository} #{current_path}"
end
task :cold do
update
migrate
end
task :update do
transaction do
update_code
end
end
desc "Update the deployed code."
task :update_code, :except => { :no_release => true } do
run "cd #{current_path}; git fetch origin; git reset --hard #{branch}"
finalize_update
end
desc "Update the database (overwritten to avoid symlink)"
task :migrations do
transaction do
update_code
end
migrate
restart
end
task :finalize_update, :except => { :no_release => true } do
run "chmod -R g+w #{latest_release}" if fetch(:group_writable, true)
# mkdir -p is making sure that the directories are there for some SCM's that don't
# save empty folders
run <<-CMD
rm -rf #{latest_release}/log #{latest_release}/public/system #{latest_release}/tmp/pids &&
mkdir -p #{latest_release}/public &&
mkdir -p #{latest_release}/tmp &&
ln -s #{shared_path}/log #{latest_release}/log &&
ln -s #{shared_path}/system #{latest_release}/public/system &&
ln -s #{shared_path}/pids #{latest_release}/tmp/pids &&
ln -sf #{shared_path}/database.yml #{latest_release}/config/database.yml
CMD
if fetch(:normalize_asset_timestamps, true)
stamp = Time.now.utc.strftime("%Y%m%d%H%M.%S")
asset_paths = fetch(:public_children, %w(images stylesheets javascripts)).map { |p| "#{latest_release}/public/#{p}" }.join(" ")
run "find #{asset_paths} -exec touch -t #{stamp} {} ';'; true", :env => { "TZ" => "UTC" }
end
end
desc "Zero-downtime restart of Unicorn"
task :restart, :except => { :no_release => true } do
run "kill -s USR2 `cat /tmp/unicorn.my_site.pid`"
end
desc "Start unicorn"
task :start, :except => { :no_release => true } do
run "cd #{current_path} ; bundle exec unicorn_rails -c config/unicorn.rb -D"
end
desc "Stop unicorn"
task :stop, :except => { :no_release => true } do
run "kill -s QUIT `cat /tmp/unicorn.my_site.pid`"
end
namespace :rollback do
desc "Moves the repo back to the previous version of HEAD"
task :repo, :except => { :no_release => true } do
set :branch, "HEAD#{1}"
deploy.default
end
desc "Rewrite reflog so HEAD#{1} will continue to point to at the next previous release."
task :cleanup, :except => { :no_release => true } do
run "cd #{current_path}; git reflog delete --rewrite HEAD#{1}; git reflog delete --rewrite HEAD#{1}"
end
desc "Rolls back to the previously deployed version."
task :default do
rollback.repo
rollback.cleanup
end
end
end
def run_rake(cmd)
run "cd #{current_path}; #{rake} #{cmd}"
end
How can I make this run properly?
Of course I already tried to run rake on the server, and it is found properly.
Thanks

Answer 1

you break rvm/capistrano integration by adding this line:
default_run_options[:shell] = 'bash'
You need to remove it.
Also I see a lot of over-engineering in your script, please check my example script which I run from time to time to confirm RVM works as expected:
https://github.com/mpapis/ad/blob/master/config/deploy.rb