Unicorn PID在初始部署时过时了

时间：2013-03-25 17:03:47

标签： ruby-on-rails capistrano unicorn

我正试图在我的rails应用程序中第一次使用capistrano和unicorn。我可以成功部署，除了unicorn不会从stderr的以下错误开始：

I, [2013-03-25T16:55:35.877323 #2378]  INFO -- : reloading config_file=/var/www/good/current/config/unicorn.rb E, [2013-03-25T16:55:35.881496 #2378] ERROR -- : error reloading config_file=/var/www/good/current/config/unicorn.rb: Already running on PID:2378 (or pid=/var/www/good/current/tmp/pids/unicorn.pid is stale) (ArgumentError) E, [2013-03-25T16:55:35.881548 #2378] ERROR -- : /var/www/good/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:193:in `pid=' E, [2013-03-25T16:55:35.881579 #2378] ERROR -- : /var/www/good/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/configurator.rb:111:in `block in commit!' E, [2013-03-25T16:55:35.881606 #2378] ERROR -- : /var/www/good/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/configurator.rb:108:in `each' E, [2013-03-25T16:55:35.881645 #2378] ERROR -- : /var/www/good/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/configurator.rb:108:in `commit!' E, [2013-03-25T16:55:35.881674 #2378] ERROR -- : /var/www/good/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:699:in `load_config!' E, [2013-03-25T16:55:35.881703 #2378] ERROR -- : /var/www/good/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:308:in `join' E, [2013-03-25T16:55:35.881731 #2378] ERROR -- : /var/www/good/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/bin/unicorn:126:in `<top (required)>' E, [2013-03-25T16:55:35.881758 #2378] ERROR -- : /var/www/good/shared/bundle/ruby/1.9.1/bin/unicorn:23:in `load' E, [2013-03-25T16:55:35.881786 #2378] ERROR -- : /var/www/good/shared/bundle/ruby/1.9.1/bin/unicorn:23:in `<main>' I, [2013-03-25T16:55:36.233632 #2378]  INFO -- : reaped
#<Process::Status: pid 2392 exit 0> worker=1 I, [2013-03-25T16:55:36.234045 #2378]  INFO -- : reaped
#<Process::Status: pid 2397 exit 0> worker=3 I, [2013-03-25T16:55:36.234560 #2378]  INFO -- : reaped
#<Process::Status: pid 2394 exit 0> worker=2 I, [2013-03-25T16:55:36.336246 #8587]  INFO -- : executing ["/var/www/good/shared/bundle/ruby/1.9.1/bin/unicorn", "-c", "/var/www/good/current/config/unicorn.rb", "-E", "production", "-D", {12=>#<Kgio::UNIXServer:fd 12>, 13=>#<Kgio::TCPServer:fd 13>}] (in /var/www/good/releases/20130325165445) I, [2013-03-25T16:55:36.336510
#8587]  INFO -- : forked child re-executing... I, [2013-03-25T16:55:38.475972 #2378]  INFO -- : reaped
#<Process::Status: pid 2389 exit 0> worker=0 I, [2013-03-25T16:55:38.476109 #2378]  INFO -- : master complete

关键是

  

错误重新加载config_file = / var / www / good / current / config / unicorn.rb：已在PID上运行：2378

我已经包含了Gemfile，deploy.rb和unicorn.rb

我很感激任何帮助或想法。我也在使用RVM和ubuntu

配置/ deploy.rb 

require "rvm/capistrano"
set :rvm_type, :system
set :rvm_install_with_sudo, true

require "bundler/capistrano"
set :bundle_without, [:darwin, :development, :test]

set :application, "Talking GOOD"
set :repository,  "git@github.com:FTW-Development/good.git"
set :scm_user, "hunter@ftwdev.com"
ssh_options[:forward_agent] = true


#set :migrate_target, :current
#set :ssh_options, { :forward_agent => true }

#set :rails_env, "production"
set :deploy_to, "/var/www/good"
#set :normalize_asset_timestamps, false #what?
set :user, "rails"
set :group, "www"
set :use_sudo, false




set :keep_releases, 5
after "deploy:restart", "deploy:cleanup"

require 'capistrano-unicorn'
#after 'deploy:restart', 'unicorn:reload' # app IS NOT preloaded
after 'deploy:restart', 'unicorn:restart'  # app preloaded



#role :web, "your web-server here"                          # Your HTTP server, Apache/etc
#role :app, "your app-server here"                          # This may be the same as your `Web` server
#role :db,  "your primary db-server here", :primary => true # This is where Rails migrations will run
#role :db,  "your slave db-server here"



#set :stages, %(production, staging)
#set :default_stage, "staging"
#require 'capistrano/ext/multistage'

#set(:unicorn_env) { rails_env }
#set(:app_env)     { rails_env }
#role(:web) { domain }
#role(:app) { domain }
#role(:db, :primary => true) { domain }

#set(:deploy_to)    { "/home/#{user}/#{application}/#{fetch :app_env}" }
#set(:current_path) { File.join(deploy_to, current_dir) }

server "good.ftwdev.com", :app, :web, :db, :primary => true

配置/ unicorn.rb 

app_path = "/var/www/good/current"

# Set unicorn options
worker_processes 1
preload_app true
timeout 180
listen "127.0.0.1:9000"

# Spawn unicorn master worker for user apps (group: apps)
user 'rails.www' 

# Fill path to your app
working_directory "/var/www/good/current"

# Should be 'production' by default, otherwise use other env 
rails_env = ENV['RAILS_ENV'] || 'production'

# Log everything to one file
stderr_path "log/unicorn.log"
stdout_path "log/unicorn.log"

# Set master PID location
pid "#{app_path}/tmp/pids/unicorn.pid"

before_fork do |server, worker|
  ActiveRecord::Base.connection.disconnect!

  old_pid = "#{server.config[:pid]}.oldbin"
  if File.exists?(old_pid) && server.pid != old_pid
    begin
      Process.kill("QUIT", File.read(old_pid).to_i)
    rescue Errno::ENOENT, Errno::ESRCH
      # someone else did our job for us
    end
  end
end

after_fork do |server, worker|
  ActiveRecord::Base.establish_connection
end

的Gemfile 

source 'https://rubygems.org'

gem 'rails', '3.2.8'

# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'

gem 'mysql2'

gem 'devise', '~> 2.1.0'
gem 'cancan'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'
  gem 'bootstrap-sass', '~> 2.2.2.0'

  # See https://github.com/sstephenson/execjs#readme for more supported runtimes
  # gem 'therubyracer', :platforms => :ruby

  gem 'uglifier', '>= 1.0.3'
end


gem 'jquery-rails'
gem 'haml'
gem 'hpricot'
gem 'ruby_parser'
gem 'simple_form'
gem 'high_voltage'
gem 'paperclip', '~> 3.0'
gem 'twitter-bootstrap-rails'


group :production do
  gem 'rb-inotify', '~> 0.9'
  gem 'execjs'
  gem 'therubyracer'
  gem 'unicorn', '~> 4.6'
end

group :development do
  gem 'thin'
  gem 'growl'
  gem 'guard'
  gem 'guard-bundler'
  gem 'guard-livereload'
  gem 'guard-rails'
  gem 'guard-rspec'
  gem 'rack-livereload'
  gem 'html2haml'
  gem 'capistrano'
  gem 'capistrano-unicorn'
  gem 'rvm-capistrano'
  gem 'rb-fsevent', :require => false
  gem 'rb-inotify', '~> 0.9', :require => false
  gem 'rb-fchange', :require => false
end


#gem "rspec-rails", ">= 2.12.1", :group => [:development, :test]
#gem "database_cleaner", ">= 0.9.1", :group => :test
#gem "email_spec", ">= 1.4.0", :group => :test
#gem "cucumber-rails", ">= 1.3.0", :group => :test, :require => false
#gem "launchy", ">= 2.1.2", :group => :test
#gem "capybara", ">= 2.0.2", :group => :test
#gem "factory_girl_rails", ">= 4.1.0", :group => [:development, :test]
#gem "bootstrap-sass", ">= 2.1.1.0"
#gem "devise", ">= 2.2.0"
#gem "cancan", ">= 1.6.8"
#gem "rolify", ">= 3.2.0"
#gem "simple_form", ">= 2.0.4"
#gem "quiet_assets", ">= 1.0.1", :group => :development
#gem "figaro", ">= 0.5.2"  #used for configurations
#gem "better_errors", ">= 0.2.0", :group => :development
#gem "binding_of_caller", ">= 0.6.8", :group => :development




# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'

# To use Jbuilder templates for JSON
# gem 'jbuilder'

# Use unicorn as the app server
# gem 'unicorn'

# Deploy with Capistrano
# gem 'capistrano'

# To use debugger
# gem 'debugger'

3 个答案:

答案 0 :(得分：6)

你的问题是在你部署时你不可能在再次运行独角兽之前杀死独角兽大师的pid。我认为问题在于你的capistrano配方...

使用独角兽时，我们通常会在启动服务器时将pid保存在生产环境中的共享文件夹中，您还可以保存日志，上传和其他独立于每个环境的sfuff。

查看我的deploy.rb之一的两个任务：

desc "Start unicorn"
  task :start, :except => { :no_release => true } do
    run "cd #{current_path} ; bundle exec unicorn_rails -c config/unicorn.rb -D"
    run "ps aux | grep unicorn_rails | head -n 1 | awk '{print $2}' > #{deploy_to}/shared/tmp/pids/unicorn.pid"
  end

  desc "Stop unicorn"
  task :stop, :except => { :no_release => true } do
    run "kill -s QUIT `cat  #{deploy_to}/shared/tmp/pids/unicorn.pid`"
  end

因此，当我停止独角兽时，我总是杀死共享文件夹中的主pid，当我启动它时，我将此pid的副本复制到生产项目中的共享文件夹。 在这种情况下，我的重启任务首先是停止然后是开始，，但这不是零停机时间......

如果想尝试，以下链接的配方零停机时间： https://github.com/railscasts/373-zero-downtime-deployment/blob/master/blog-after/config/recipes/templates/unicorn.rb.erb

答案 1 :(得分：2)

我遇到了同样的错误，原因是：

在弯曲独角兽服务器 gem' capistrano3-unicorn 时，默认尝试在 tmp / pids / unicorn.pid 中杀死独角兽process_id但它位于 /shared/pids/unicorn.pid 。

通过更改 unicorn.rb 中 unicorn.pid 的路径解决了我的错误。

答案 2 :(得分：1)

陈旧的pid可能有三个原因： 1）没有对unicorn.pid文件的写许可。这可以很容易地检测到启动unicorn服务器时检查错误日志。 2）在远程机器的情况下：你没有将unicorn.pid添加到.gitignore并且每次使用本地pid强制覆盖pid时通过无意识的提交。 3）在config / unicorn.rb中存储unicorn.pid的文件路径与上限配方中config / deploy.rb中提供的路径不同。

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