yii2和負載均衡

Question

我正在研究PHP Yii2應用程序。 我對yii2有一個奇怪的問題，這是我的問題。

眾所周知，Yii2項目中有一個web \\ assets文件夾，它將加載它自己的資產包，但在配置負載平衡時，我發現chrome的開發人員工具控制台會拋出以下錯誤：

http://firekylin.eastasia.cloudapp.azure.com/assets/fde0fce1/css/bootstrap.css Failed to load resource: the server responded with a status of 404 (Not Found)
http://firekylin.eastasia.cloudapp.azure.com/assets/ebd0699a/css/AdminLTE.min.css Failed to load resource: the server responded with a status of 404 (Not Found)
http://firekylin.eastasia.cloudapp.azure.com/assets/5e97633a/jquery.js Failed to load resource: the server responded with a status of 404 (Not Found)
yii.js:464 Uncaught ReferenceError: jQuery is not defined(…)
http://firekylin.eastasia.cloudapp.azure.com/assets/14e563af/yii.validation.js Failed to load resource: the server responded with a status of 404 (Not Found)
http://firekylin.eastasia.cloudapp.azure.com/assets/fde0fce1/js/bootstrap.js Failed to load resource: the server responded with a status of 404 (Not Found)
yii.activeForm.js:14 Uncaught TypeError: Cannot read property 'fn' of undefined(…)
http://firekylin.eastasia.cloudapp.azure.com/assets/fde0fce1/js/bootstrap.js Failed to load resource: the server responded with a status of 404 (Not Found)
app.min.js:13 Uncaught Error: AdminLTE requires jQuery(…)
index.php:555 Uncaught ReferenceError: jQuery is not defined(…)
http://firekylin.eastasia.cloudapp.azure.com/assets/88d3a068/css/font-awesome.min.css Failed to load resource: the server responded with a status of 404 (Not Found)
http://firekylin.eastasia.cloudapp.azure.com/assets/ebd0699a/css/skins/_all-skins.min.css Failed to load resource: the server responded with a status of 404 (Not Found)

使用負載均衡ip訪問時無法找到js，css文件，但是一旦我使用服務器的ip正好運行Yii2應用程序，網頁將成功加載js，css文件：

左邊一個是使用負載平衡服務器訪問，右邊一個是使用Yii2服務器訪問

有兩台服務器正好運行Yii2，它們都有自己的web \\ assets文件夾，並有不同的緩存：

兩個Yii2服務器中的web \\ assets文件夾

我發現一旦我停止其中一個Yii2服務器，負載均衡服務器就會成功運行。因此，我想也許問題可能來自Yii2的web \\ assets文件夾。從上面的兩張圖片我們可以發現Yii2使用md5來重命名其中的文件夾，也許是因為兩個Yii2服務器的web \\ assets文件夾有不同的命名子文件夾，導致問題發生？

但是，我嘗試使用以下代碼解決問題：

<?php

$params = require(__DIR__ . '/params.php');

$config = [
'id' => 'basic',
'defaultRoute'=>'firekylin',
'basePath' => dirname(__DIR__),
'bootstrap' => ['log'],
'components' => [

    'view' => [
        'theme' => [
            'pathMap' => [
                '@app/views' => '@app/views/dmstr/yii2-adminlte-asset/example-views/yiisoft/yii2-app'
            ],
        ],
    ],

    'assetManager' => [
        'class' => 'yii\web\AssetManager',
        'forceCopy' => true,
    ],


    'request' => [
        // !!! insert a secret key in the following (if it is empty) - this is required by cookie validation
        'cookieValidationKey' => '2MhlyGaaGs_uqt_apwy1jLahR_wZ8dBv',

        'parsers' => [
            'application/json' => 'yii\web\JsonParser',
            'text/json' => 'yii\web\JsonParser',
        ]
    ],
    'cache' => [
        'class' => 'yii\caching\FileCache',
    ],
    'user' => [
        'identityClass' => 'app\models\OriginUser',
        'enableAutoLogin' => true,
    ],
    'errorHandler' => [
        'errorAction' => 'site/error',
    ],
    'mailer' => [
        'class' => 'yii\swiftmailer\Mailer',
        // send all mails to a file by default. You have to set
        // 'useFileTransport' to false and configure a transport
        // for the mailer to send real emails.
        'useFileTransport' => true,
    ],
    'log' => [
        'traceLevel' => YII_DEBUG ? 3 : 0,
        'targets' => [
            [
                'class' => 'yii\log\FileTarget',
                'levels' => ['error', 'warning'],
            ],
        ],
    ],
    'db' => require(__DIR__ . '/db.php'),
    /*
    'urlManager' => [
        'enablePrettyUrl' => true,
        'showScriptName' => false,
        'rules' => [
        ],
    ],
    */
],
'params' => $params,
];

if (YII_ENV_DEV) {
$config['bootstrap'][] = 'debug';
$config['modules']['debug'] = [
    'class' => 'yii\debug\Module',
];

$config['bootstrap'][] = 'gii';
$config['modules']['gii'] = [
    'class' => 'yii\gii\Module',
];
$config['components']['assetManager']['forceCopy'] = true;
}

return $config;

和

public function beforeAction($action){

        Yii::$app->assetManager->forceCopy = YII_DEBUG;

    return parent::beforeAction($action);
}

我嘗試使用assetManager或

$config['components']['assetManager']['forceCopy'] = true;

在我自己的控制器中的config \\ web.php或函數beforeAction中禁止資產文件夾，但它不起作用。有什么方法可以解決問題嗎？

Answer 1

確保兩台服務器上的yii2核心的文件路徑和版本相同。

擴展assetManager類和自定義hash()函數。 請記住每次更改資產時清除Assets文件夾。

例如：

Class MyAssetManager extend yii\web\AssetManager{
    protected function hash($path)
    {
        $path = is_file($path) ? dirname($path) : $path;
        return sprintf('%x', crc32($path . Yii::getVersion()));
    }
}

其他一些方式：

1. 使用hashCallback屬性： http ：//www.yiiframework.com/doc-2.0/yii-web-assetmanager.html# $ hashCallback-detail
2. 將負載均衡配置更改為基於會話的路由例如：NGINX會話持久性
3. 將CDN用於資產