CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3deploymentnginxcapistrano
khcr
khcr

Reputation: 103

Need a reboot after a deployment with Capistrano

I'm running a rails 3 application hosted on a Ubuntu 12.04 VPS. I'm using Capistrano for the deployment and nginx + unicorn for the server.
My problem is that if I did a "cap deploy", my website displays the old code until I reboot my VPS. I check the current code on the server and it is the right one. I have already tried to restart nginx, but it doesn't work. My deploy file (I followed the Railscast):

# deploy.rb

require "bundler/capistrano"
require 'new_relic/recipes'

server "188.165.145.167", :web, :app, :db, primary: true

set :application, "neurones"
set :user, "neurones"
set :deploy_to, "/home/neurones/apps/#{application}"
set :deploy_via, :remote_cache
set :use_sudo, false
set :shared_children, shared_children + %w{public/uploads}

set :scm, "git"
set :repository, "[email protected]:khcr/neurones.git"
set :branch, "master"

default_run_options[:pty] = true
ssh_options[:forward_agent] = true

after "deploy", "deploy:cleanup" # keep only the last 5 releases
after "deploy:update", "newrelic:notice_deployment" # update new relic

namespace :deploy do
  %w[start stop restart].each do |command|
    desc "#{command} unicorn server"
    task command, roles: :app, except: {no_release: true} do
      run "/etc/init.d/unicorn_#{application} #{command}"
    end
  end

  task :setup_config, roles: :app do
    sudo "ln -nfs #{current_path}/config/nginx.conf /etc/nginx/sites-enabled/#{application}"
    sudo "ln -nfs #{current_path}/config/unicorn_init.sh /etc/init.d/unicorn_#{application}"
    run "mkdir -p #{shared_path}/config"
    put File.read("config/database.example.yml"), "#{shared_path}/config/database.yml"
    puts "Now edit the config files in #{shared_path}."
  end
  after "deploy:setup", "deploy:setup_config"

  task :symlink_config, roles: :app do
    run "ln -nfs #{shared_path}/config/database.yml #{release_path}/config/database.yml"
  end
  after "deploy:finalize_update", "deploy:symlink_config"

  desc "Make sure local git is in sync with remote."
  task :check_revision, roles: :web do
    unless `git rev-parse HEAD` == `git rev-parse origin/master`
      puts "WARNING: HEAD is not the same as origin/master"
      puts "Run `git push` to sync changes."
      exit
    end
  end
  before "deploy", "deploy:check_revision"
end

Upvotes: 0

Views: 1356

Answers (1)

khcr
khcr

Reputation: 103

I resolved the problem.
Looking in the unicorn log (thanks Domon for the idea), I saw the error:

error reloading config_file=/home/neurones/apps/neurones/current/config/unicorn.rb: Application has been already initialized. (RuntimeError)

I changed unicorn_init.sh from:

restart|reload)
  sig HUP && echo reloaded OK && exit 0
  echo >&2 "Couldn't reload, starting '$CMD' instead"
  run "$CMD"
  ;;

to

restart|reload)
  sig USR2 && echo reloaded OK && exit 0
  echo >&2 "Couldn't reload, starting '$CMD' instead"
  run "$CMD"
  ;;

Upvotes: 2

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