我rails application已经digitalocean使用capistrano. 但是，出于某种奇怪的原因，无论我做什么，我都会不断获得504 Gateway Timeout nginx error. 我试过重启独角兽，但错误仍然存在。
我在这里包含了 unicorn.log 文件的最后 50 行 - 这里可能有什么问题？
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/open-uri.rb:29:in `initialize'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/open-uri.rb:29:in `open'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/open-uri.rb:29:in `open'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/open-uri.rb:29:in `open'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/logger.rb:592:in `open_logfile'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/logger.rb:549:in `initialize'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/logger.rb:314:in `new'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/logger.rb:314:in `initialize'
/home/etyme/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/core_ext/logger.rb:72:in `initialize'
/home/etyme/releases/20140120142015/config/environments/development.rb:53:in `new'
/home/etyme/releases/20140120142015/config/environments/development.rb:53:in `block in <top (required)>'
/home/etyme/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:24:in `class_eval'
/home/etyme/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:24:in `configure'
/home/etyme/releases/20140120142015/config/environments/development.rb:1:in `<top (required)>'
/home/etyme/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
/home/etyme/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `block in require'
/home/etyme/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency'
/home/etyme/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
/home/etyme/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:571:in `block in <class:Engine>'
/home/etyme/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `instance_exec'
/home/etyme/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `run'
/home/etyme/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:55:in `block in run_initializers'
/home/etyme/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `each'
/home/etyme/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `run_initializers'
/home/etyme/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application.rb:136:in `initialize!'
/home/etyme/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in `method_missing'
/home/etyme/releases/20140120142015/config/environment.rb:5:in `<top (required)>'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
config.ru:4:in `block in <main>'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize'
config.ru:1:in `new'
config.ru:1:in `<main>'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/unicorn-4.6.3/lib/unicorn.rb:48:in `eval'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/unicorn-4.6.3/lib/unicorn.rb:48:in `block in builder'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/unicorn-4.6.3/lib/unicorn/http_server.rb:722:in `call'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/unicorn-4.6.3/lib/unicorn/http_server.rb:722:in `build_app!'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/unicorn-4.6.3/lib/unicorn/http_server.rb:595:in `init_worker_process'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/unicorn-4.6.3/lib/unicorn/http_server.rb:615:in `worker_loop'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/unicorn-4.6.3/lib/unicorn/http_server.rb:500:in `spawn_missing_workers'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/unicorn-4.6.3/lib/unicorn/http_server.rb:511:in `maintain_worker_count'
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/unicorn-4.6.3/lib/unicorn/http_server.rb:277:in `join'
/usr/bin/unicorn:121:in `<main>'
E, [2014-01-21T05:42:51.210093 #30994] ERROR -- : reaped #<Process::Status: pid 31079 exit 1> worker=0
I, [2014-01-21T05:42:51.210263 #30994] INFO -- : worker=0 spawning...
I, [2014-01-21T05:42:51.213421 #31093] INFO -- : worker=0 spawned pid=31093
I, [2014-01-21T05:42:51.228866 #31093] INFO -- : Refreshing Gem list
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/bundler-1.5.1/lib/bundler/runtime.rb:220: warning: Insecure world writable dir /home/etyme/releases in PATH, mode 040777
/usr/local/rvm/rubies/ruby-1.9.3-p429/lib/ruby/gems/1.9.1/gems/bundler-1.5.1/lib/bundler/runtime.rb:220: warning: Insecure world writable dir /home/etyme/releases in PATH, mode 040777
这是我的 nginx 配置文件
user www-data;
worker_processes 4;
pid /var/run/nginx.pid;
events { worker_connections 1024; }
http {
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
server_tokens off;
# server_names_hash_bucket_size 64;
# server_name_in_redirect off;
include /etc/nginx/mime.types;
default_type application/octet-stream;
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
gzip on;
gzip_disable "msie6";
gzip_types text/plain text/xml text/css text/comma-separated-values;
upstream app_server { server 127.0.0.1:8080 fail_timeout=0; }
include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
}