I want deploy a rails project to Ubuntu 14.04 server by using capistrano and let it run with unicorn.
I created a unicorn:start task like this:
namespace :unicorn do
task :environment do
set :unicorn_pid, "#{shared_path}/tmp/pids/unicorn.pid"
set :unicorn_config, "#{current_path}/config/unicorn/#{fetch(:rails_env)}.rb"
end
def start_unicorn
within current_path do
execute :bundle, :exec, :unicorn, "-c #{fetch(:unicorn_config)} -E #{fetch(:rails_env)} -D"
end
end
desc "Start unicorn server"
task :start => :environment do
on roles(:app) do
start_unicorn
end
end
end
And this is the result of bundle exec cap production unicorn:start
DEBUG [525e1e88] Running /usr/bin/env [ -d ~/.rbenv/versions/2.2.3 ] as [email protected]
DEBUG [525e1e88] Command: [ -d ~/.rbenv/versions/2.2.3 ]
DEBUG [525e1e88] Finished in 0.465 seconds with exit status 0 (successful).
DEBUG [6dc9e26a] Running /usr/bin/env if test ! -d /var/www/us.example.com/current; then echo "Directory does not exist '/var/www/us.example.com/current'" 1>&2; false; fi as [email protected]
DEBUG [6dc9e26a] Command: if test ! -d /var/www/us.example.com/current; then echo "Directory does not exist '/var/www/us.example.com/current'" 1>&2; false; fi
DEBUG [6dc9e26a] Finished in 0.052 seconds with exit status 0 (successful).
DEBUG [81c26179] Running /usr/bin/env [ -e /var/www/us.example.com/shared/tmp/pids/unicorn.pid ] && kill -0 `cat /var/www/us.example.com/shared/tmp/pids/unicorn.pid` as [email protected]
DEBUG [81c26179] Command: [ -e /var/www/us.example.com/shared/tmp/pids/unicorn.pid ] && kill -0 `cat /var/www/us.example.com/shared/tmp/pids/unicorn.pid`
DEBUG [81c26179] Finished in 0.053 seconds with exit status 1 (failed).
INFO [a5655cfe] Running RBENV_ROOT=~/.rbenv RBENV_VERSION=2.2.3 ~/.rbenv/bin/rbenv exec bundle exec unicorn -c /var/www/us.example.com/current/config/unicorn/production.rb -E deployment -D as [email protected]
DEBUG [a5655cfe] Command: cd /var/www/us.example.com/current && ( RBENV_ROOT=~/.rbenv RBENV_VERSION=2.2.3 RAILS_ENV=production RBENV_ROOT=~/.rbenv RBENV_VERSION=2.2.3 ~/.rbenv/bin/rbenv exec bundle exec unicorn -c /var/www/us.example.com/current/config/unicorn/production.rb -E deployment -D )
INFO [a5655cfe] Finished in 3.770 seconds with exit status 0 (successful).
DEBUG [dd3f31fa] Running /usr/bin/env if test ! -d /var/www/us.example.com/current; then echo "Directory does not exist '/var/www/us.example.com/current'" 1>&2; false; fi as [email protected]
DEBUG [dd3f31fa] Command: if test ! -d /var/www/us.example.com/current; then echo "Directory does not exist '/var/www/us.example.com/current'" 1>&2; false; fi
DEBUG [dd3f31fa] Finished in 0.055 seconds with exit status 0 (successful).
INFO [1140efb6] Running RBENV_ROOT=~/.rbenv RBENV_VERSION=2.2.3 ~/.rbenv/bin/rbenv exec bundle exec unicorn -c /var/www/us.example.com/current/config/unicorn/production.rb -E production -D as [email protected]
DEBUG [1140efb6] Command: cd /var/www/us.example.com/current && ( RBENV_ROOT=~/.rbenv RBENV_VERSION=2.2.3 RBENV_ROOT=~/.rbenv RBENV_VERSION=2.2.3 ~/.rbenv/bin/rbenv exec bundle exec unicorn -c /var/www/us.example.com/current/config/unicorn/production.rb -E production -D )
DEBUG [1140efb6] master failed to start, check stderr log for details
And in the log shows pid=': Already running on PID:10760.
Unicorn itself is executed, but somehow the start process runs twice, so second running process fails. I could find that, but I can't find out why the running process runs two times.
What should I check to solve this problem?
Sorry a bit off-topic. Have you try to use existing 3rd party plugin instead of writing your own Capistrano task? You can find them at: