從本地主機連接到Appfog上的MongoDB

Question

我試圖在本地PC上運行我的應用程序。一切看起來都在雲上完全沒有問題，它的工作原理，並連接到MongoDB的用下面的代碼：

$services_json = json_decode(getenv("VCAP_SERVICES"),true); 
$mongo_config = $services_json["mongodb-1.8"][0]["credentials"]; 

// Generally will be localhost if you're querying from the machine that Mongo is installed on 
$config['mongo_host'] = $mongo_config["hostname"]; 

// Generally will be 27017 unless you've configured Mongo otherwise 
$config['mongo_port'] = $mongo_config["port"]; 

// The database you want to work from (required) 
$config['mongo_db'] = $mongo_config["db"]; 

// Leave blank if Mongo is not running in auth mode 
$config['mongo_user'] = $mongo_config["username"]; 
$config['mongo_pass'] = $mongo_config["password"]; 

但因爲我無法從我的本地PC獲得VCAP_SERVICES，我使用的常數值，用於連接到連接我的應用上appfog遠程服務器蒙哥：

// Generally will be localhost if you're querying from the machine that Mongo is installed on 
$config['mongo_host'] = "***"; 

// Generally will be 27017 unless you've configured Mongo otherwise 
$config['mongo_port'] = "***"; 

// The database you want to work from (required) 
$config['mongo_db'] = "db"; 

// Leave blank if Mongo is not running in auth mode 
$config['mongo_user'] = "***"; 
$config['mongo_pass'] = "***"; 

但是，當我試圖通過http://localhost/my-app執行的應用程序，它給了我這個錯誤：

Unable to connect to MongoDB: Failed to connect to: ***: Connection timed out 

可能是什麼問題？

*值的隱私被刪除。

Answer 1

你是否嘗試連接，而不是VCAP變量不在本地主機上，而是實際的服務器？如果沒有VCAP變量，AppFog可能無法授權連接，或者您手動獲取的值可能有錯誤。

我認爲這是一個授權問題。如果無法處理，請嘗試其他雲服務。這不是唯一的解決方案。