很多人都遇到上面的问题：Exception 'yii\base\InvalidConfigException' with message 'You should configure "authManager" component to use database before executing this migration.'
其实这里只是你的
'authManager' => [

    'class' => 'yii\rbac\DbManager',
],

配置放错位置了。深入源码你可以知道其实这里他找的配置文件是config/console.php里面的components组建。
在里面加入：
'authManager' => [

    'class' => 'yii\rbac\DbManager',
],

就ok了

$config = [
    'id' => 'basic-console',
    'basePath' => dirname(__DIR__),
    'bootstrap' => ['log'],
    'controllerNamespace' => 'app\commands',
    'components' => [
        'cache' => [
            'class' => 'yii\caching\FileCache',
        ],
        'authManager' => [
	        'class' => 'yii\rbac\DbManager',
        ],
        'log' => [
            'targets' => [
                [
                    'class' => 'yii\log\FileTarget',
                    'levels' => ['error', 'warning'],
                ],
            ],
        ],
        'db' => $db,
    ],
    'params' => $params,
    /*
    'controllerMap' => [
        'fixture' => [ // Fixture generation command line.
            'class' => 'yii\faker\FixtureController',
        ],
    ],
    */
];

python pa xia lai de