Question

我正在尝试运行rails应用。我按照以下说明操作：http://luugiathuy.com/2014/11/setup-nginx-puma-on-ubuntu/以设置服务器。

但是，当我走到尽头时，具体来说：puma -e production -d -b unix:///tmp/app_name.sock --pidfile /tmp/puma.pid运行它后我得到了答复：

Puma starting in single mode...
* Version 2.16.0 (ruby 2.1.7-p400), codename: Midwinter Nights Trance
* Min threads: 0, max threads: 16
* Environment: production
* Daemonizing...

外部IP只是保持返回nginx错误：

We're sorry, but something went wrong.

If you are the application owner check the logs for more information.

所以，在其他地方寻找，我试过： RACK_ENV=production bundle exec puma -p 3000

而且，这似乎做得更多，我得到了：

Puma starting in single mode...
* Version 2.15.3 (ruby 2.1.7-p400), codename: Autumn Arbor Airbrush
* Min threads: 0, max threads: 16
* Environment: production
Rails Error: Unable to access log file. Please ensure that /home/myusername/myappname/log/production.log exists and is writable (ie, make it writable for user and group: chmod 0664 /home/myusername/myappname/log/production.log). The log level has bee
n raised to WARN and the output directed to STDERR until the problem is fixed.
** [Bugsnag] Bugsnag exception handler 3.0.0 ready, api_key=#####################
* Listening on tcp://0.0.0.0:3000
Use Ctrl-C to stop

但是外部网页返回了相同的nginx错误。

我该怎么办？似乎事情正在运行，但是puma和nginx只是不说话？

编辑1

I did:  `sudo chmod -R 0777 /home/myunsername/appname/log/`

Then:

$RACK_ENV=production bundle exec puma -p 3000

而且，现在输出低于，外部IP的nginx响应保持不变。

Puma starting in single mode...
* Version 2.15.3 (ruby 2.1.7-p400), codename: Autumn Arbor Airbrush
* Min threads: 0, max threads: 16
* Environment: production
* Listening on tcp://0.0.0.0:3000
Use Ctrl-C to stop

现在，两种方法：RACK_ENV=production bundle exec puma -p 3000和puma -e production -d -b unix:///tmp/web-app.sock --pidfile /tmp/puma.pid都会创建似乎与nginx无法通信但不会返回任何错误的puma进程。

编辑2 检查日志

我跑了：

cat log/production.log

然后又回来了：

I, [2016-02-02T##:##:##.###### #28802] INFO -- : ** [Bugsnag] Bugsnag exception handler 3.0.0 ready, api_key=####################

编辑2.5 检查更多日志我跑了：

tail -f /var/log/nginx/error.log

然后又回来了：

2016/02/02 11:09:52 [emerg] 28220#0: unknown directive "tream" in /etc/nginx/sites-enabled/web-appname.com:1 2016/02/02 11:10:26 [emerg] 28273#0: unknown directive "tream" in /etc/nginx/sites-enabled/web-appname.com:1

这些错误是在我的文件丢失前3个字符之前引起的，此错误已被修复。总结：我在上面列出的日志中似乎没有任何错误给我任何提示。

编辑3

我的猜测目前是我错误地设置了我的/etc/nginx/sites-available/myapp.com文件。以下是我使用过的所有命名。

目前它被命名为： web-app.com ，网址只是IP地址，让我们说 https://104.199.155.166/ 。我的应用程序位于名为 web-app

的文件夹中

upstream web-app {
  server unix:///tmp/web-app.sock;
}

server {
  listen 80;
  server_name web-app; # change to match your URL
  root /home/myusername/web-app/public; # change to match your rails app public folder

  location / {
    proxy_pass http://web-app; # match the name of upstream directive which is defined in line 1
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Real-IP $remote_addr;
  }

  location ~* ^/assets/ {
    # Per RFC2616 - 1 year maximum expiry
    expires 1y;
    add_header Cache-Control public;

    # Some browsers still send conditional-GET requests if there's a
    # Last-Modified header or an ETag header even if they haven't
    # reached the expiry date sent in the Expires header.
    add_header Last-Modified "";
    add_header ETag "";
    break;
  }
}

编辑4

我对上面的配置文件做了很多更改，而我所做的一切都没有改变。我目前在我认为是正确的配置。我很茫然，不胜感激任何建议。

小问题：如果同一个虚拟机上有其他用户，并且他们可能安装了nginx并进行了不同的配置，是否会导致问题？

Answer 1

StackOverflow太烦人了＃34;代码没有被正确认可＆＃34;所以我决定将所有答案都作为代码。

You have to create config/puma.rb manually. I recommend reading DigitalOcean's article: 
["How To Deploy a Rails App with Puma and Nginx on Ubuntu 14.04"][1]
I'll paste the puma.rb from the article:
    # config/puma.rb
    # Change to match your CPU core count
    workers 2

    # Min and Max threads per worker
    threads 1, 6

    app_dir = File.expand_path("../..", __FILE__)
    shared_dir = "#{app_dir}/shared"

    # Default to production
    rails_env = ENV['RAILS_ENV'] || "production"
    environment rails_env

    # Set up socket location
    # bind "unix://#{shared_dir}/sockets/puma.sock"
    # in your case
    bind "unix:///tmp/web-app.sock"

    # Logging
    stdout_redirect "#{shared_dir}/log/puma.stdout.log", "#shared_dir}/log/puma.stderr.log", true

    # Set master PID and state locations
    pidfile "#{shared_dir}/pids/puma.pid"
    state_path "#{shared_dir}/pids/puma.state"
    activate_control_app

    on_worker_boot do
      require "active_record"
      ActiveRecord::Base.connection.disconnect! rescue ActiveRecord::ConnectionNotEstablished
      ActiveRecord::Base.establish_connection(YAML.load_file("#{app_dir}/config/database.yml")[rails_env])
    end

Detail: after setting bind [...] you can just execute 

    $ bundle exec puma RAILS_ENV=production

Make sure that the directory shared exists and, within it, folders log and pids. Chmod them, otherwise, You'll face permission issues.

Another thing: can you show your nginx.conf file? If the user set in nginx.conf has no "rights" to read your app, You'll (also) face permission issues.

Tip: If you have problems with the empty folders from shared (log and pids) and git, put a .keep (empty file) inside both of them.

Another tip: you can set server_name (nginx directive) as _ (yes, an underscore) or localhost if you do not have a domain.

Almost forget: check if your vm has http and https traffic enabled.

  [1]: https://www.digitalocean.com/community/tutorials/how-to-deploy-a-rails-app-with-puma-and-nginx-on-ubuntu-14-04

在puma，rails，nginx上设置rails应用程序一切都在运行，但nginx发送错误

1 个答案: