[Monolog] Disable DebugLogger in CLI

src/Symfony/Bridge/Monolog/Logger.php

@@ -75,6 +75,21 @@ class Logger extends BaseLogger implements DebugLoggerInterface, ResetInterface
         $this->clear();
     }
 
+    public function removeDebugLogger()
+    {
+        foreach ($this->processors as $k => $processor) {
+            if ($processor instanceof DebugLoggerInterface) {
+                unset($this->processors[$k]);
+            }
+        }
+
+        foreach ($this->handlers as $k => $handler) {
+            if ($handler instanceof DebugLoggerInterface) {
+                unset($this->handlers[$k]);
+            }
+        }
+    }
+
     /**
      * Returns a DebugLoggerInterface instance if one is registered with this logger.
      *

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddDebugLogProcessorPass.php

@@ -30,6 +30,14 @@ class AddDebugLogProcessorPass implements CompilerPassInterface
         }
 
         $definition = $container->getDefinition('monolog.logger_prototype');
+        $definition->setConfigurator([__CLASS__, 'configureLogger']);
         $definition->addMethodCall('pushProcessor', [new Reference('debug.log_processor')]);
     }
+
+    public static function configureLogger($logger)
+    {
+        if (method_exists($logger, 'removeDebugLogger') && \in_array(\PHP_SAPI, ['cli', 'phpdbg'], true)) {
+            $logger->removeDebugLogger();
+        }
+    }
 }