Use the default connection and check for MySQL driver

Author: xel1045

src/Console/DbUpgradeCommand.php

@@ -363,12 +363,27 @@ protected function checkExistingDatabase(): void
         }
     }
 
+    /**
+     * @return string
+     */
+    protected function getDatabaseConnection(): string
+    {
+        return config('database.default');
+    }
+
     /**
      * @return array
      */
     protected function getDatabaseConfig(): array
     {
-        return config('database.connections.mysql');
+        $config  = config('database.connections.' . $this->getDatabaseConnection());
+        $driver = $config['driver'] ?? null;
+
+        if ($driver !== 'mysql') {
+            throw new DbUpgradeException('Only driver MySQL is supported.');
+        }
+
+        return $config;
     }
 
     /**