MySql 在 Passenger + Nginx 中部署时 Rails 出错
MySql Error in Rails while deployed in Passenger + Nginx
我有一个带有 MySql 数据库引擎的 rails 应用程序。我能够 运行 使用
在服务器 (173.xxx.xxx.xxx) 上本地开发模式下的应用程序
cd /var/www/demo
rails s -b 0.0.0.0 -p3001
服务器已启动
=> Booting Puma
=> Rails 5.0.7 application starting in development on http://0.0.0.0:3001
=> Run `rails server -h` for more startup options
Puma starting in single mode...
* Version 3.11.4 (ruby 2.5.1-p57), codename: Love Song
* Min threads: 5, max threads: 5
* Environment: development
* Listening on tcp://0.0.0.0:3001
Use Ctrl-C to stop
我在 Gemfile 中有 gem 'mysql2', '~> 0.5.1'。
捆绑包安装成功。
database.yml
development:
adapter: mysql2
host: localhost
encoding: utf8
reconnect: false
database: demo_development
pool: 5
username: root
password: password
socket: /var/run/mysqld/mysqld.sock
test:
adapter: mysql2
encoding: utf8
reconnect: false
database: demo_development
pool: 5
username: root
password: password
production:
adapter: mysql2
encoding: utf8
reconnect: false
database: demo_development
pool: 5
username: root
password: password
服务器本地一切正常（我可以通过
从浏览器访问应用程序
)。该应用程序通过 IP 运行良好。 Mysql 用户名和密码 正确（我用 mysql -u root -p 检查过）。我能够 成功登录到 Mysql 提示没问题。
现在我想在 Passenger + Nginx 上部署 rails 应用程序。
mysite.conf
server {
listen 80;
server_name www.mysite.com mysite.com;
# Tell Nginx and Passenger where your app's 'public' directory is
root /var/www/demo/public;
# Turn on Passenger
passenger_enabled on;
rails_env development;
passenger_ruby /usr/local/rvm/gems/ruby-2.5.1/wrappers/ruby;
}
我重启了nginx
sudo service nginx restart
我遇到了这个错误
nginx error.log
App 8312 output: Started GET "/" for 49.206.150.241 at 2018-05-23 16:03:48 +0200
App 8312 output: Cannot render console from 49.206.150.241! Allowed networks: 127.0.0.1, ::1, 127.0.0.0/127.255.255.255
App 8312 output:
App 8312 output: Mysql2::Error (Access denied for user 'root'@'localhost'):
App 8312 output:
App 8312 output: mysql2 (0.5.1) lib/mysql2/client.rb:90:in `connect'
App 8312 output: mysql2 (0.5.1) lib/mysql2/client.rb:90:in `initialize'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/mysql2_adapter.rb:25:in `new'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/mysql2_adapter.rb:25:in `mysql2_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:729:in `new_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:773:in `checkout_new_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:752:in `try_to_checkout_new_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:713:in `acquire_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:490:in `checkout'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:364:in `connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:883:in `retrieve_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_handling.rb:128:in `retrieve_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_handling.rb:91:in `connection'
App 8312 output: activerecord (5.0.7) lib/active_record/migration.rb:559:in `connection'
App 8312 output: activerecord (5.0.7) lib/active_record/migration.rb:546:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/callbacks.rb:38:in `block in call'
App 8312 output: activesupport (5.0.7) lib/active_support/callbacks.rb:97:in `__run_callbacks__'
App 8312 output: activesupport (5.0.7) lib/active_support/callbacks.rb:750:in `_run_call_callbacks'
App 8312 output: activesupport (5.0.7) lib/active_support/callbacks.rb:90:in `run_callbacks'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/callbacks.rb:36:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/executor.rb:12:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/debug_exceptions.rb:49:in `call'
App 8312 output: web-console (3.6.2) lib/web_console/middleware.rb:135:in `call_app'
App 8312 output: web-console (3.6.2) lib/web_console/middleware.rb:22:in `block in call'
App 8312 output: web-console (3.6.2) lib/web_console/middleware.rb:20:in `catch'
App 8312 output: web-console (3.6.2) lib/web_console/middleware.rb:20:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
App 8312 output: railties (5.0.7) lib/rails/rack/logger.rb:36:in `call_app'
App 8312 output: railties (5.0.7) lib/rails/rack/logger.rb:24:in `block in call'
App 8312 output: activesupport (5.0.7) lib/active_support/tagged_logging.rb:69:in `block in tagged'
App 8312 output: activesupport (5.0.7) lib/active_support/tagged_logging.rb:26:in `tagged'
App 8312 output: activesupport (5.0.7) lib/active_support/tagged_logging.rb:69:in `tagged'
App 8312 output: railties (5.0.7) lib/rails/rack/logger.rb:24:in `call'
App 8312 output: sprockets-rails (3.2.1) lib/sprockets/rails/quiet_assets.rb:13:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/request_id.rb:24:in `call'
App 8312 output: rack (2.0.5) lib/rack/method_override.rb:22:in `call'
App 8312 output: rack (2.0.5) lib/rack/runtime.rb:22:in `call'
App 8312 output: activesupport (5.0.7) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/executor.rb:12:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/static.rb:136:in `call'
App 8312 output: rack (2.0.5) lib/rack/sendfile.rb:111:in `call'
App 8312 output: railties (5.0.7) lib/rails/engine.rb:522:in `call'
App 8312 output: /usr/lib/ruby/vendor_ruby/phusion_passenger/rack/thread_handler_extension.rb:97:in `process_request'
App 8312 output: /usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler/thread_handler.rb:149:in `accept_and_process_next_request'
App 8312 output: /usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler/thread_handler.rb:110:in `main_loop'
App 8312 output: /usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler.rb:415:in `block (3 levels) in start_threads'
App 8312 output: /usr/lib/ruby/vendor_ruby/phusion_passenger/utils.rb:113:in `block in create_thread_and_abort_on_exception'
App 8312 output: Rendering /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout
App 8312 output: Rendering /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/_source.html.erb
App 8312 output: Rendered /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/_source.html.erb (2.1ms)
App 8312 output: Rendering /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb
App 8312 output: Rendered /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (1.2ms)
App 8312 output: Rendering /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb
App 8312 output: Rendered /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (0.7ms)
App 8312 output: Rendered /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (18.9ms)
但是非常奇怪的是，相同的代码库在本地 运行ning 很好（rails s -b 0.0.0.0 -p3001）没有 MySql 错误。
sudo systemctl status nginx
结果
● nginx.service - A high performance web server and a reverse proxy server
Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
Active: active (running) since Wed 2018-05-23 15:58:17 CEST; 16min ago
Docs: man:nginx(8)
Process: 8204 ExecStop=/sbin/start-stop-daemon --quiet --stop --retry QUIT/5 --pidfile /run/nginx.pid (code=exited, status=0
Process: 30081 ExecReload=/usr/sbin/nginx -g daemon on; master_process on; -s reload (code=exited, status=0/SUCCESS)
Process: 8209 ExecStart=/usr/sbin/nginx -g daemon on; master_process on; (code=exited, status=0/SUCCESS)
Process: 8207 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=0/SUCCESS)
Main PID: 8243 (nginx)
Tasks: 52 (limit: 4915)
CGroup: /system.slice/nginx.service
├─8210 Passenger watchdog
├─8213 Passenger core
├─8243 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
├─8245 nginx: worker process
├─8246 nginx: worker process
├─8247 nginx: worker process
├─8248 nginx: worker process
├─8250 nginx: worker process
├─8251 nginx: worker process
├─8252 nginx: worker process
├─8253 nginx: worker process
├─8254 nginx: worker process
├─8255 nginx: worker process
└─8312 Passenger AppPreloader: /var/www/nizanto (forking...)
May 23 15:58:16 vmi182971.contaboserver.net systemd[1]: Starting A high performance web server and a reverse proxy server...
May 23 15:58:17 vmi182971.contaboserver.net systemd[1]: Started A high performance web server and a reverse proxy server.
● nginx.service - A high performance web server and a reverse proxy server
Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
Active: active (running) since Wed 2018-05-23 15:58:17 CEST; 16min ago
Docs: man:nginx(8)
Process: 8204 ExecStop=/sbin/start-stop-daemon --quiet --stop --retry QUIT/5 --pidfile /run/nginx.pid (code=exited, status=0
Process: 30081 ExecReload=/usr/sbin/nginx -g daemon on; master_process on; -s reload (code=exited, status=0/SUCCESS)
Process: 8209 ExecStart=/usr/sbin/nginx -g daemon on; master_process on; (code=exited, status=0/SUCCESS)
Process: 8207 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=0/SUCCESS)
Main PID: 8243 (nginx)
Tasks: 52 (limit: 4915)
CGroup: /system.slice/nginx.service
├─8210 Passenger watchdog
├─8213 Passenger core
├─8243 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
├─8245 nginx: worker process
├─8246 nginx: worker process
├─8247 nginx: worker process
├─8248 nginx: worker process
├─8250 nginx: worker process
├─8251 nginx: worker process
├─8252 nginx: worker process
├─8253 nginx: worker process
├─8254 nginx: worker process
├─8255 nginx: worker process
└─8312 Passenger AppPreloader: /var/www/nizanto (forking...)
May 23 15:58:16 vmi182971.contaboserver.net systemd[1]: Starting A high performance web server and a reverse proxy server...
May 23 15:58:17 vmi182971.contaboserver.net systemd[1]: Started A high performance web server and a reverse proxy server.
The username and password of Mysql are correct.
在使用 SQLite3 数据库引擎时，应用程序在 passenger + nginx 上运行良好。我猜问题只出在 Mysql 数据库引擎上。
感谢 Advance.Any 非常感谢您的帮助。
我找到了一个临时修复方法。我在 MySQL shell 中创建了一个新用户，而不是使用默认的根帐户。
CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON * . * TO 'newuser'@'localhost';
FLUSH PRIVILEGES;
database.yml
development:
adapter: mysql2
host: localhost
encoding: utf8
reconnect: false
database: demo_development
pool: 5
username: newuser
password: password
socket: /var/run/mysqld/mysqld.sock
test:
adapter: mysql2
encoding: utf8
reconnect: false
database: demo_development
pool: 5
username: newuser
password: password
production:
adapter: mysql2
encoding: utf8
reconnect: false
database: demo_development
pool: 5
username: newuser
password: password
更改 MySQL 中的用户和 database.yml 中的用户名最终解决了问题。还是不知道为什么用root账号会出现问题
我有一个带有 MySql 数据库引擎的 rails 应用程序。我能够 运行 使用
在服务器 (173.xxx.xxx.xxx) 上本地开发模式下的应用程序 cd /var/www/demo
rails s -b 0.0.0.0 -p3001
服务器已启动
=> Booting Puma
=> Rails 5.0.7 application starting in development on http://0.0.0.0:3001
=> Run `rails server -h` for more startup options
Puma starting in single mode...
* Version 3.11.4 (ruby 2.5.1-p57), codename: Love Song
* Min threads: 5, max threads: 5
* Environment: development
* Listening on tcp://0.0.0.0:3001
Use Ctrl-C to stop
我在 Gemfile 中有 gem 'mysql2', '~> 0.5.1'。
捆绑包安装成功。
database.yml
development:
adapter: mysql2
host: localhost
encoding: utf8
reconnect: false
database: demo_development
pool: 5
username: root
password: password
socket: /var/run/mysqld/mysqld.sock
test:
adapter: mysql2
encoding: utf8
reconnect: false
database: demo_development
pool: 5
username: root
password: password
production:
adapter: mysql2
encoding: utf8
reconnect: false
database: demo_development
pool: 5
username: root
password: password
服务器本地一切正常（我可以通过
从浏览器访问应用程序)。该应用程序通过 IP 运行良好。 Mysql 用户名和密码 正确（我用 mysql -u root -p 检查过）。我能够 成功登录到 Mysql 提示没问题。
现在我想在 Passenger + Nginx 上部署 rails 应用程序。
mysite.conf
server {
listen 80;
server_name www.mysite.com mysite.com;
# Tell Nginx and Passenger where your app's 'public' directory is
root /var/www/demo/public;
# Turn on Passenger
passenger_enabled on;
rails_env development;
passenger_ruby /usr/local/rvm/gems/ruby-2.5.1/wrappers/ruby;
}
我重启了nginx
sudo service nginx restart
我遇到了这个错误
nginx error.log
App 8312 output: Started GET "/" for 49.206.150.241 at 2018-05-23 16:03:48 +0200
App 8312 output: Cannot render console from 49.206.150.241! Allowed networks: 127.0.0.1, ::1, 127.0.0.0/127.255.255.255
App 8312 output:
App 8312 output: Mysql2::Error (Access denied for user 'root'@'localhost'):
App 8312 output:
App 8312 output: mysql2 (0.5.1) lib/mysql2/client.rb:90:in `connect'
App 8312 output: mysql2 (0.5.1) lib/mysql2/client.rb:90:in `initialize'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/mysql2_adapter.rb:25:in `new'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/mysql2_adapter.rb:25:in `mysql2_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:729:in `new_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:773:in `checkout_new_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:752:in `try_to_checkout_new_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:713:in `acquire_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:490:in `checkout'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:364:in `connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:883:in `retrieve_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_handling.rb:128:in `retrieve_connection'
App 8312 output: activerecord (5.0.7) lib/active_record/connection_handling.rb:91:in `connection'
App 8312 output: activerecord (5.0.7) lib/active_record/migration.rb:559:in `connection'
App 8312 output: activerecord (5.0.7) lib/active_record/migration.rb:546:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/callbacks.rb:38:in `block in call'
App 8312 output: activesupport (5.0.7) lib/active_support/callbacks.rb:97:in `__run_callbacks__'
App 8312 output: activesupport (5.0.7) lib/active_support/callbacks.rb:750:in `_run_call_callbacks'
App 8312 output: activesupport (5.0.7) lib/active_support/callbacks.rb:90:in `run_callbacks'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/callbacks.rb:36:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/executor.rb:12:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/debug_exceptions.rb:49:in `call'
App 8312 output: web-console (3.6.2) lib/web_console/middleware.rb:135:in `call_app'
App 8312 output: web-console (3.6.2) lib/web_console/middleware.rb:22:in `block in call'
App 8312 output: web-console (3.6.2) lib/web_console/middleware.rb:20:in `catch'
App 8312 output: web-console (3.6.2) lib/web_console/middleware.rb:20:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
App 8312 output: railties (5.0.7) lib/rails/rack/logger.rb:36:in `call_app'
App 8312 output: railties (5.0.7) lib/rails/rack/logger.rb:24:in `block in call'
App 8312 output: activesupport (5.0.7) lib/active_support/tagged_logging.rb:69:in `block in tagged'
App 8312 output: activesupport (5.0.7) lib/active_support/tagged_logging.rb:26:in `tagged'
App 8312 output: activesupport (5.0.7) lib/active_support/tagged_logging.rb:69:in `tagged'
App 8312 output: railties (5.0.7) lib/rails/rack/logger.rb:24:in `call'
App 8312 output: sprockets-rails (3.2.1) lib/sprockets/rails/quiet_assets.rb:13:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/request_id.rb:24:in `call'
App 8312 output: rack (2.0.5) lib/rack/method_override.rb:22:in `call'
App 8312 output: rack (2.0.5) lib/rack/runtime.rb:22:in `call'
App 8312 output: activesupport (5.0.7) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/executor.rb:12:in `call'
App 8312 output: actionpack (5.0.7) lib/action_dispatch/middleware/static.rb:136:in `call'
App 8312 output: rack (2.0.5) lib/rack/sendfile.rb:111:in `call'
App 8312 output: railties (5.0.7) lib/rails/engine.rb:522:in `call'
App 8312 output: /usr/lib/ruby/vendor_ruby/phusion_passenger/rack/thread_handler_extension.rb:97:in `process_request'
App 8312 output: /usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler/thread_handler.rb:149:in `accept_and_process_next_request'
App 8312 output: /usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler/thread_handler.rb:110:in `main_loop'
App 8312 output: /usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler.rb:415:in `block (3 levels) in start_threads'
App 8312 output: /usr/lib/ruby/vendor_ruby/phusion_passenger/utils.rb:113:in `block in create_thread_and_abort_on_exception'
App 8312 output: Rendering /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout
App 8312 output: Rendering /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/_source.html.erb
App 8312 output: Rendered /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/_source.html.erb (2.1ms)
App 8312 output: Rendering /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb
App 8312 output: Rendered /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (1.2ms)
App 8312 output: Rendering /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb
App 8312 output: Rendered /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (0.7ms)
App 8312 output: Rendered /usr/local/rvm/gems/ruby-2.5.1/gems/actionpack-5.0.7/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (18.9ms)
但是非常奇怪的是，相同的代码库在本地 运行ning 很好（rails s -b 0.0.0.0 -p3001）没有 MySql 错误。
sudo systemctl status nginx
结果
● nginx.service - A high performance web server and a reverse proxy server
Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
Active: active (running) since Wed 2018-05-23 15:58:17 CEST; 16min ago
Docs: man:nginx(8)
Process: 8204 ExecStop=/sbin/start-stop-daemon --quiet --stop --retry QUIT/5 --pidfile /run/nginx.pid (code=exited, status=0
Process: 30081 ExecReload=/usr/sbin/nginx -g daemon on; master_process on; -s reload (code=exited, status=0/SUCCESS)
Process: 8209 ExecStart=/usr/sbin/nginx -g daemon on; master_process on; (code=exited, status=0/SUCCESS)
Process: 8207 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=0/SUCCESS)
Main PID: 8243 (nginx)
Tasks: 52 (limit: 4915)
CGroup: /system.slice/nginx.service
├─8210 Passenger watchdog
├─8213 Passenger core
├─8243 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
├─8245 nginx: worker process
├─8246 nginx: worker process
├─8247 nginx: worker process
├─8248 nginx: worker process
├─8250 nginx: worker process
├─8251 nginx: worker process
├─8252 nginx: worker process
├─8253 nginx: worker process
├─8254 nginx: worker process
├─8255 nginx: worker process
└─8312 Passenger AppPreloader: /var/www/nizanto (forking...)
May 23 15:58:16 vmi182971.contaboserver.net systemd[1]: Starting A high performance web server and a reverse proxy server...
May 23 15:58:17 vmi182971.contaboserver.net systemd[1]: Started A high performance web server and a reverse proxy server.
● nginx.service - A high performance web server and a reverse proxy server
Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
Active: active (running) since Wed 2018-05-23 15:58:17 CEST; 16min ago
Docs: man:nginx(8)
Process: 8204 ExecStop=/sbin/start-stop-daemon --quiet --stop --retry QUIT/5 --pidfile /run/nginx.pid (code=exited, status=0
Process: 30081 ExecReload=/usr/sbin/nginx -g daemon on; master_process on; -s reload (code=exited, status=0/SUCCESS)
Process: 8209 ExecStart=/usr/sbin/nginx -g daemon on; master_process on; (code=exited, status=0/SUCCESS)
Process: 8207 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=0/SUCCESS)
Main PID: 8243 (nginx)
Tasks: 52 (limit: 4915)
CGroup: /system.slice/nginx.service
├─8210 Passenger watchdog
├─8213 Passenger core
├─8243 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
├─8245 nginx: worker process
├─8246 nginx: worker process
├─8247 nginx: worker process
├─8248 nginx: worker process
├─8250 nginx: worker process
├─8251 nginx: worker process
├─8252 nginx: worker process
├─8253 nginx: worker process
├─8254 nginx: worker process
├─8255 nginx: worker process
└─8312 Passenger AppPreloader: /var/www/nizanto (forking...)
May 23 15:58:16 vmi182971.contaboserver.net systemd[1]: Starting A high performance web server and a reverse proxy server...
May 23 15:58:17 vmi182971.contaboserver.net systemd[1]: Started A high performance web server and a reverse proxy server.
The username and password of Mysql are correct.
在使用 SQLite3 数据库引擎时，应用程序在 passenger + nginx 上运行良好。我猜问题只出在 Mysql 数据库引擎上。
感谢 Advance.Any 非常感谢您的帮助。
我找到了一个临时修复方法。我在 MySQL shell 中创建了一个新用户，而不是使用默认的根帐户。
CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON * . * TO 'newuser'@'localhost';
FLUSH PRIVILEGES;
database.yml
development:
adapter: mysql2
host: localhost
encoding: utf8
reconnect: false
database: demo_development
pool: 5
username: newuser
password: password
socket: /var/run/mysqld/mysqld.sock
test:
adapter: mysql2
encoding: utf8
reconnect: false
database: demo_development
pool: 5
username: newuser
password: password
production:
adapter: mysql2
encoding: utf8
reconnect: false
database: demo_development
pool: 5
username: newuser
password: password
更改 MySQL 中的用户和 database.yml 中的用户名最终解决了问题。还是不知道为什么用root账号会出现问题