问题
i am on 5.3.31
so it cannot be related to
https://github.com/laravel/framework/issues/15179
after 300ish jobs I get:
[2017-04-11 13:51:53] local.ERROR: Symfony\Component\Debug\Exception\FatalThrowableError: Call to a member function beginTransaction() on null in /var/www/html/www.myapp.com/vendor/laravel/framework/src/Illuminate/Database/Connection.php:612
Stack trace:
#0 /var/www/html/www.myapp.com/vendor/laravel/framework/src/Illuminate/Queue/DatabaseQueue.php(175): Illuminate\Database\Connection->beginTransaction()
#1 /var/www/html/www.myapp.com/vendor/laravel/framework/src/Illuminate/Queue/Worker.php(175): Illuminate\Queue\DatabaseQueue->pop('default')
#2 /var/www/html/www.myapp.com/vendor/laravel/framework/src/Illuminate/Queue/Worker.php(145): Illuminate\Queue\Worker->getNextJob(Object(Illuminate\Queue\DatabaseQueue), 'default')
#3 /var/www/html/www.myapp.com/vendor/laravel/framework/src/Illuminate/Queue/Worker.php(75): Illuminate\Queue\Worker->runNextJob('database', 'default', Object(Illuminate\Queue\WorkerOptions))
#4 /var/www/html/www.myapp.com/vendor/laravel/framework/src/Illuminate/Queue/Console/WorkCommand.php(100): Illuminate\Queue\Worker->daemon('database', 'default', Object(Illuminate\Queue\WorkerOptions))
#5 /var/www/html/www.myapp.com/vendor/laravel/framework/src/Illuminate/Queue/Console/WorkCommand.php(83): Illuminate\Queue\Console\WorkCommand->runWorker('database', 'default')
#6 [internal function]: Illuminate\Queue\Console\WorkCommand->fire()
#7 /var/www/html/www.myapp.com/vendor/laravel/framework/src/Illuminate/Container/Container.php(508): call_user_func_array(Array, Array)
#8 /var/www/html/www.myapp.com/vendor/laravel/framework/src/Illuminate/Console/Command.php(169): Illuminate\Container\Container->call(Array)
#9 /var/www/html/www.myapp.com/vendor/symfony/console/Command/Command.php(256): Illuminate\Console\Command->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#10 /var/www/html/www.myapp.com/vendor/laravel/framework/src/Illuminate/Console/Command.php(155): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#11 /var/www/html/www.myapp.com/vendor/symfony/console/Application.php(820): Illuminate\Console\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#12 /var/www/html/www.myapp.com/vendor/symfony/console/Application.php(187): Symfony\Component\Console\Application->doRunCommand(Object(Illuminate\Queue\Console\WorkCommand), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#13 /var/www/html/www.myapp.com/vendor/symfony/console/Application.php(118): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#14 /var/www/html/www.myapp.com/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(121): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#15 /var/www/html/www.myapp.com/artisan(35): Illuminate\Foundation\Console\Kernel->handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#16 {main}
this error keeps repeating
the jobs are stuck, nothing advances, nothing gets moved to failed-queue neither
the only solution is that I have found is stopping the supervisor workers via cronjob every couple minutes, and starting them again. Which is far from optimal
seems as well as if the whole server disappears once in a while quickly. Maybe a memory problem? i have 1 gb of memory for my live server.
回答1:
It is probably one of two things:
1. Memory Leak
If you are running your queues as a daemon process, then it is possible that over time they will run out of memory. If this occurs, you have three choices.
- Find a stop the memory leak
- Switch to using
queue:listento ensure PHP restarts each time - Run a scheduler that includes
$schedule->command('queue:restart')->hourly(). This gives you the best of both worlds, because you get the benefit of a daemon process, and just restart it once an hour to allow PHP to reset.
2. Failed database connection
There is currently a known issue that if a DB connection goes away during a daemon process, it may not reconnect. A PR is in process here - so check if this gets accepted and the bug should be fixed: https://github.com/laravel/framework/pull/19080
Monitoring
If you want to know your queues are always working, you can use a service like Eyewitness.io. This is a dedicated Laravel application monitoring, that includes queue monitoring. If your queues stop working for any reason - you'll get notified. (Disclaimer: it is my site)
来源：https://stackoverflow.com/questions/43354331/when-using-laravel-queue-job-processing-getting-stuck