production.ERROR: SQLSTATE [HY000] [2002] Тайм-аут соединения

Question

Это приложение Laravel в системе Linux, использующее два сервера в системе и удаленное место.

Сначала я протестировал это приложение перед развертыванием в локальной системе Win10 и прекрасно работал с удаленным сервером.Теперь я не могу получить доступ к удаленной БД с производственного сервера в Linux, но я могу использовать локальный сервер разработки в Win10.Я пробовал ...

1. Проверены все имена переменных .env, связанные с 'config / database': passed

2. Запрос изменен на простойпроверить как

   DB::connection('remote')->table('customers')->get();: «не работающий запрос»

3. Соединение с БД протестировано на Производственном сервере и Dev.локальный сервер, но работал только локальный сервер Dev.

[2019-01-29 13:32:56] production.ERROR: SQLSTATE[HY000] [2002] Connection timed out 
(SQL: select * from `customers`) 
{"exception":"[object] (Illuminate\\Database\\QueryException(code: 2002):
 SQLSTATE[HY000] [2002] Connection timed out (SQL: select * from `customers`) at 
/test/vendor/laravel/framework/src/Illuminate/Database/Connection.php:664,
 Doctrine\\DBAL\\Driver\\PDOException(code: 2002): SQLSTATE[HY000] [2002]
 Connection timed out at /test/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/
PDOConnection.php:31, PDOException(code: 2002): SQLSTATE[HY000] [2002]
 Connection timed out at /test/vendor/doctrine/dbal/lib/Doctrine/DBAL/
Driver/PDOConnection.php:27)[stacktrace]
#0 /test/vendor/laravel/framework/src/Illuminate/Database/Connection.php(624): Illuminate\\Database\\Connection->runQueryCallback('select * from `...', Array, Object(Closure))
#1 /test/vendor/laravel/framework/src/Illuminate/Database/Connection.php(333): Illuminate\\Database\\Connection->run('select * from `...', Array, Object(Closure))
#2 /test/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(1963): Illuminate\\Database\\Connection->select('select * from `...', Array, true)
#3 /test/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(1951): Illuminate\\Database\\Query\\Builder->runSelect()
#4 /test/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(2435): Illuminate\\Database\\Query\\Builder->Illuminate\\Database\\Query\\{closure}()
#5 /test/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(1952): Illuminate\\Database\\Query\\Builder->onceWithColumns(Array, Object(Closure))
#6 /test/app/Http/Controllers/JobController.php(56): Illuminate\\Database\\Query\\Builder->get()
#7 [internal function]: App\\Http\\Controllers\\JobController->__construct(Object(App\\Repositories\\JobRepository), Object(Jenssegers\\Agent\\Agent))
#8 /test/vendor/laravel/framework/src/Illuminate/Container/Container.php(800): ReflectionClass->newInstanceArgs(Array)
#9 /testhome/vendor/laravel/framework/src/Illuminate/Container/Container.php(646): Illuminate\\Container\\Container->build('App\\\\Http\\\\Contro...')
#10 /testhome/vendor/laravel/framework/src/Illuminate/Container/Container.php(601): Illuminate\\Container\\Container->resolve('App\\\\Http\\\\Contro...', Array)
#11 /testhome/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(734): Illuminate\\Container\\Container->make('App\\\\Http\\\\Contro...', Array)
#12 /test/vendor/laravel/framework/src/Illuminate/Routing/Route.php(226): Illuminate\\Foundation\\Application->make('App\\\\Http\\\\Contro...')
#13 /test/vendor/laravel/framework/src/Illuminate/Routing/Route.php(796): Illuminate\\Routing\\Route->getController()
#14 /test/vendor/laravel/framework/src/Illuminate/Routing/Route.php(757): Illuminate\\Routing\\Route->controllerMiddleware()
#15 /test/vendor/laravel/framework/src/Illuminate/Routing/Router.php(678): Illuminate\\Routing\\Route->gatherMiddleware()
#16 /test/vendor/laravel/framework/src/Illuminate/Routing/Router.php(658): Illuminate\\Routing\\Router->gatherRouteMiddleware(Object(Illuminate\\Routing\\Route))
#17 /test/vendor/laravel/framework/src/Illuminate/Routing/Router.php(642): Illuminate\\Routing\\Router->runRouteWithinStack(Object(Illuminate\\Routing\\Route), Object(Illuminate\\Http\\Request))
#18 /test/vendor/laravel/framework/src/Illuminate/Routing/Router.php(608): Illuminate\\Routing\\Router->runRoute(Object(Illuminate\\Http\\Request), Object(Illuminate\\Routing\\Route))
#19 /test/vendor/laravel/framework/src/Illuminate/Routing/Router.php(597): Illuminate\\Routing\\Router->dispatchToRoute(Object(Illuminate\\Http\\Request))
#20 /test/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(176): Illuminate\\Routing\\Router->dispatch(Object(Illuminate\\Http\\Request))
#21 /test/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(30): Illuminate\\Foundation\\Http\\Kernel->Illuminate\\Foundation\\Http\\{closure}(Object(Illuminate\\Http\\Request))
#22 /test/vendor/barryvdh/laravel-debugbar/src/Middleware/InjectDebugbar.php(58): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#23 /test/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(151): Barryvdh\\Debugbar\\Middleware\\InjectDebugbar->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#24 /test/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#25 /test/vendor/barryvdh/laravel-cors/src/HandleCors.php(36): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#26 /test/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(151): Barryvdh\\Cors\\HandleCors->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#27 /test/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#28 /test/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(31): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#29 /test/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(151): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#30 /test/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#31 /test/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(31): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#32 /test/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(151): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#33 /test/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#34 /test/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php(27): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#35 /test/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(151): Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#36 /test/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#37 /test/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/CheckForMaintenanceMode.php(62): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#38 /test/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(151): Illuminate\\Foundation\\Http\\Middleware\\CheckForMaintenanceMode->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#39 /test/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#40 /test/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(104): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#41 /test/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(151): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))
#42 /test/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(116): Illuminate\\Foundation\\Http\\Kernel->sendRequestThroughRouter(Object(Illuminate\\Http\\Request))
#43 /test/public/index.php(58): Illuminate\\Foundation\\Http\\Kernel->handle(Object(Illuminate\\Http\\Request))
#44 {main}
"}