我正在尝试在Rails应用程序中首次使用capistrano和麒麟。我可以成功部署，但 unicorn 不会以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
我已经包含了Gemfile，deploy.rb和unicorn.rb
我将不胜感激。我也在使用RVM和ubuntu
config/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, "[email protected]:FTW-Development/good.git"
set :scm_user, "[email protected]"
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
config/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
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'
最佳答案
您的问题是，当您进行部署时，在再次运行 unicorn 之前，您可能并没有杀死 unicorn 主pid。我认为问题出在您的辣椒粉配方中...
使用 unicorn ，我们通常在启动服务器时将pid保存在生产环境中的共享文件夹中，您还可以在其中保存日志，上传文件和其他独立于每个环境的文件。
请参阅我的deploy.rb之一的以下两项任务:
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 unicorn 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中。
在这种情况下，我的重新启动任务首先调用停止，然后调用开始，即，但这不是零停机时间...
如果想尝试，以下链接提供了零停机时间的配方:
https://github.com/railscasts/373-zero-downtime-deployment/blob/master/blog-after/config/recipes/templates/unicorn.rb.erb
关于ruby-on-rails - 初次部署时，Unicorn PID已过时，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/15620647/