yii2框架关于log的配置

log里面记录了大量的不需需要的401 401的错误,占据了大量的磁盘空间; 

"log" => [
    "traceLevel" => YII_DEBUG ? 3 : 0,
    "targets" => [
        [
            "class" => "yiilogFileTarget",
            "levels" => ["error", "warning"],
            "except" => [
                "yiiwebHttpException:401",
                "yiiwebHttpException:404",
            ],
            "logVars" => [], //Disable logging of _SERVER, _POST, etc.
        ],
    ],
],