Redis: "Connection refused" error log on reboot

Hi,

I'm using Laravel Horizon / Redis with php artisan horizon running via supervisor (through Forge). On rebooting the server (via sudo reboot) I'm getting a ton of Log::error() entries that just say Connection Refused, also forwarded to Slack.

I get that it makes sense to Log these errors, but not during reboot. How are you rebooting your servers, stop the workers before? Or just ignore the errors?

Furthermore, this only happens when I'm running Redis locally and not e.g. as DBaaS. So it could probably be prevented by shutting down the workers first, then Redis?

• Ubuntu 18.04 (also 20.04)
• Laravel ^8
• Horizon ^5.6

Related: https://github.com/laravel/ideas/issues/2471

[2021-01-26 23:31:07] production.ERROR: Connection refused {"exception":"[object] (RedisException(code: 0): Connection refused at /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Redis/Connectors/PhpRedisConnector.php:141)
[stacktrace]
#0 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Redis/Connectors/PhpRedisConnector.php(141): Redis->connect()
#1 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Redis/Connectors/PhpRedisConnector.php(84): Illuminate\Redis\Connectors\PhpRedisConnector->establishConnection()
#2 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Support/helpers.php(263): Illuminate\Redis\Connectors\PhpRedisConnector->Illuminate\Redis\Connectors\{closure}()
#3 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Redis/Connectors/PhpRedisConnector.php(109): tap()
#4 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Redis/Connectors/PhpRedisConnector.php(28): Illuminate\Redis\Connectors\PhpRedisConnector->createClient()
#5 [internal function]: Illuminate\Redis\Connectors\PhpRedisConnector->Illuminate\Redis\Connectors\{closure}()
#6 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Redis/Connections/PhpRedisConnection.php(541): call_user_func()
#7 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Redis/Connections/Connection.php(220): Illuminate\Redis\Connections\PhpRedisConnection->command()
#8 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Redis/Connections/PhpRedisConnection.php(580): Illuminate\Redis\Connections\Connection->__call()
#9 /home/forge/domain.com/releases/20210125112949/vendor/laravel/horizon/src/RedisHorizonCommandQueue.php(52): Illuminate\Redis\Connections\PhpRedisConnection->__call()
#10 /home/forge/domain.com/releases/20210125112949/vendor/laravel/horizon/src/Supervisor.php(329): Laravel\Horizon\RedisHorizonCommandQueue->pending()
#11 /home/forge/domain.com/releases/20210125112949/vendor/laravel/horizon/src/Supervisor.php(288): Laravel\Horizon\Supervisor->processPendingCommands()
#12 /home/forge/domain.com/releases/20210125112949/vendor/laravel/horizon/src/Supervisor.php(259): Laravel\Horizon\Supervisor->loop()
#13 /home/forge/domain.com/releases/20210125112949/vendor/laravel/horizon/src/Console/SupervisorCommand.php(99): Laravel\Horizon\Supervisor->monitor()
#14 /home/forge/domain.com/releases/20210125112949/vendor/laravel/horizon/src/Console/SupervisorCommand.php(74): Laravel\Horizon\Console\SupervisorCommand->start()
#15 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(36): Laravel\Horizon\Console\SupervisorCommand->handle()
#16 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Container/Util.php(40): Illuminate\Container\BoundMethod::Illuminate\Container\{closure}()
#17 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(93): Illuminate\Container\Util::unwrapIfClosure()
#18 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(37): Illuminate\Container\BoundMethod::callBoundMethod()
#19 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Container/Container.php(610): Illuminate\Container\BoundMethod::call()
#20 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Console/Command.php(136): Illuminate\Container\Container->call()
#21 /home/forge/domain.com/releases/20210125112949/vendor/symfony/console/Command/Command.php(255): Illuminate\Console\Command->execute()
#22 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Console/Command.php(121): Symfony\Component\Console\Command\Command->run()
#23 /home/forge/domain.com/releases/20210125112949/vendor/symfony/console/Application.php(971): Illuminate\Console\Command->run()
#24 /home/forge/domain.com/releases/20210125112949/vendor/symfony/console/Application.php(290): Symfony\Component\Console\Application->doRunCommand()
#25 /home/forge/domain.com/releases/20210125112949/vendor/symfony/console/Application.php(166): Symfony\Component\Console\Application->doRun()
#26 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Console/Application.php(93): Symfony\Component\Console\Application->run()
#27 /home/forge/domain.com/releases/20210125112949/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(129): Illuminate\Console\Application->run()
#28 /home/forge/domain.com/releases/20210125112949/artisan(37): Illuminate\Foundation\Console\Kernel->handle()
#29 {main}