使用 Dokku + nginx + unicorn 的未初始化常量 ActiveRecord (NameError)
uninitialized constant ActiveRecord (NameError) wiith Dokku + nginx + unicorn
我 运行 在 digitalocean 上使用 Dokku + nginx + PostgreSQL 的 Rails 应用程序。部署的应用程序 运行ning 使用 WEBrick 作为默认服务器,我想迁移到 unicorn。
Gemfile
group :production do
gem 'pg'
gem 'unicorn'
end
我已经为 Unicorn
使用了 Heroku 配置
Procfile
web: bundle exec unicorn -p $PORT -c ./config/unicorn.rb
config/unicorn.rb
worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
timeout 15
preload_app true
before_fork do |server, worker|
Signal.trap 'TERM' do
puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
Process.kill 'QUIT', Process.pid
end
defined?(ActiveRecord::Base) and
ActiveRecord::Base.connection.disconnect!
end
after_fork do |server, worker|
Signal.trap 'TERM' do
puts 'Unicorn worker intercepting TERM and doing nothing. Wait for master to send QUIT'
end
defined?(ActiveRecord::Base) and
ActiveRecord::Base.establish_connection
end
这就是日志的样子
root@oktobTest:~# dokku logs oktob
I, [2015-04-25T18:30:29.195191 #13] INFO -- : Refreshing Gem list
config.ru:4:in `block in <main>': uninitialized constant ActiveRecord (NameError)
from /app/vendor/bundle/ruby/2.1.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
from /app/vendor/bundle/ruby/2.1.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'
from config.ru:1:in `new'
from config.ru:1:in `<main>'
from /app/vendor/bundle/ruby/2.1.0/gems/unicorn-4.8.3/lib/unicorn.rb:48:in `eval'
from /app/vendor/bundle/ruby/2.1.0/gems/unicorn-4.8.3/lib/unicorn.rb:48:in `block in builder'
from /app/vendor/bundle/ruby/2.1.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:764:in `call'
from /app/vendor/bundle/ruby/2.1.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:764:in `build_app!'
from /app/vendor/bundle/ruby/2.1.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:137:in `start'
from /app/vendor/bundle/ruby/2.1.0/gems/unicorn-4.8.3/bin/unicorn:126:in `<top (required)>'
from /app/vendor/bundle/ruby/2.1.0/bin/unicorn:23:in `load'
from /app/vendor/bundle/ruby/2.1.0/bin/unicorn:23:in `<main>'
当我 运行 docker ps
命令时,我只看到 PostgreSQL 进程,没有 rails 服务器的进程。
root@oktobTest:~# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
fbdbb516b19c postgresql/oktob:latest "/usr/bin/start_pgsq 2 hours ago Up 2 hours 0.0.0.0:49153->5432/tcp elegant_ardinghelli
我在 dokku Github 页面上提问并得到了答案
所以将 active_record
gem 添加到 config/unicorn.rb
将解决问题:
require 'rubygems'
require 'active_record'
worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
timeout 15
preload_app true
before_fork do |server, worker|
Signal.trap 'TERM' do
puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
Process.kill 'QUIT', Process.pid
end
defined?(ActiveRecord::Base) and
ActiveRecord::Base.connection.disconnect!
end
after_fork do |server, worker|
Signal.trap 'TERM' do
puts 'Unicorn worker intercepting TERM and doing nothing. Wait for master to send QUIT'
end
defined?(ActiveRecord::Base) and
ActiveRecord::Base.establish_connection
end
这是结果
使用docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
4a43ac670998 dokku/oktob:latest "/start web" 12 minutes ago Up 12 minutes grave_yonath
fbdbb516b19c postgresql/oktob:latest "/usr/bin/start_pgsq 6 days ago Up 6 days 0.0.0.0:49153->5432/tcp elegant_ardinghelli
使用htop
我 运行 在 digitalocean 上使用 Dokku + nginx + PostgreSQL 的 Rails 应用程序。部署的应用程序 运行ning 使用 WEBrick 作为默认服务器,我想迁移到 unicorn。
Gemfile
group :production do
gem 'pg'
gem 'unicorn'
end
我已经为 Unicorn
使用了 Heroku 配置Procfile
web: bundle exec unicorn -p $PORT -c ./config/unicorn.rb
config/unicorn.rb
worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
timeout 15
preload_app true
before_fork do |server, worker|
Signal.trap 'TERM' do
puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
Process.kill 'QUIT', Process.pid
end
defined?(ActiveRecord::Base) and
ActiveRecord::Base.connection.disconnect!
end
after_fork do |server, worker|
Signal.trap 'TERM' do
puts 'Unicorn worker intercepting TERM and doing nothing. Wait for master to send QUIT'
end
defined?(ActiveRecord::Base) and
ActiveRecord::Base.establish_connection
end
这就是日志的样子
root@oktobTest:~# dokku logs oktob
I, [2015-04-25T18:30:29.195191 #13] INFO -- : Refreshing Gem list
config.ru:4:in `block in <main>': uninitialized constant ActiveRecord (NameError)
from /app/vendor/bundle/ruby/2.1.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
from /app/vendor/bundle/ruby/2.1.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'
from config.ru:1:in `new'
from config.ru:1:in `<main>'
from /app/vendor/bundle/ruby/2.1.0/gems/unicorn-4.8.3/lib/unicorn.rb:48:in `eval'
from /app/vendor/bundle/ruby/2.1.0/gems/unicorn-4.8.3/lib/unicorn.rb:48:in `block in builder'
from /app/vendor/bundle/ruby/2.1.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:764:in `call'
from /app/vendor/bundle/ruby/2.1.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:764:in `build_app!'
from /app/vendor/bundle/ruby/2.1.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:137:in `start'
from /app/vendor/bundle/ruby/2.1.0/gems/unicorn-4.8.3/bin/unicorn:126:in `<top (required)>'
from /app/vendor/bundle/ruby/2.1.0/bin/unicorn:23:in `load'
from /app/vendor/bundle/ruby/2.1.0/bin/unicorn:23:in `<main>'
当我 运行 docker ps
命令时,我只看到 PostgreSQL 进程,没有 rails 服务器的进程。
root@oktobTest:~# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
fbdbb516b19c postgresql/oktob:latest "/usr/bin/start_pgsq 2 hours ago Up 2 hours 0.0.0.0:49153->5432/tcp elegant_ardinghelli
我在 dokku Github 页面上提问并得到了答案
所以将 active_record
gem 添加到 config/unicorn.rb
将解决问题:
require 'rubygems'
require 'active_record'
worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
timeout 15
preload_app true
before_fork do |server, worker|
Signal.trap 'TERM' do
puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
Process.kill 'QUIT', Process.pid
end
defined?(ActiveRecord::Base) and
ActiveRecord::Base.connection.disconnect!
end
after_fork do |server, worker|
Signal.trap 'TERM' do
puts 'Unicorn worker intercepting TERM and doing nothing. Wait for master to send QUIT'
end
defined?(ActiveRecord::Base) and
ActiveRecord::Base.establish_connection
end
这是结果
使用docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
4a43ac670998 dokku/oktob:latest "/start web" 12 minutes ago Up 12 minutes grave_yonath
fbdbb516b19c postgresql/oktob:latest "/usr/bin/start_pgsq 6 days ago Up 6 days 0.0.0.0:49153->5432/tcp elegant_ardinghelli
使用htop