Node.js 仍然无法将一个Openshift应用程序连接到另一个Openshift应用程序'；s MongoDB数据库

在遵循此处提出的建议后：

…简言之，这是->“您需要将应用程序创建为可伸缩的，然后添加MongoDB以使其正常工作。然后MongoDB将使用自己的ip地址和端口号（记住使用此端口号，否则将无法正常工作）。”

…我仍然无法将Node.js应用程序成功连接到Openshift中另一个Node.js应用程序上的MongoDB数据库

我尝试了以下建议的主机字符串排列：

本地主机

128.xxx.xxx.xxx

[24字符哈希]-myapp-mydomain.rhcloud.com

…结果都一样。没有联系

下面是调用以设置db连接的代码

dbProvider = function(host, port, user, pass) {
    console.re.log("Attempting to create a DB instance...");
    this.db = new Db(process.env.OPENSHIFT_MONGODB_EXTDB_DBNAME, new Server(host, port, { auto_reconnect: true }, {}));
    console.re.log("created the DB instance...");
    if(this.db!= null){
        console.re.log("successfully connected to remote db %s at %s:%s",this.db,host,port);
        this.db.open(function(error, db){
            if(error){
                console.re.log("error %s attempting to open the db at %s:%s",error,host,port);
            }
            else{
                db.authenticate(user, pass, function(error, result) { //db.authenticate(user, pass, function(error, result)
                    if(error){
                        console.re.log("error %s attempting to connect to remote db at %s:%s using user %s",error,host,port,user);
                    }
                    else{
                        console.re.log("successfully connected to remote db at %s:%s using user %s",host,port,user);
                    }
                });
            }
        });
    }
    else{
        console.re.log("unable to connect to remote db at %s:%s",host,port);
    }
}

上面的代码在db.open（）回调时失败，错误对象为null

检查this.db对象后，我们看到以下内容：

{
    "domain": null,
    "_events": {},
    "_maxListeners": 10,
    "databaseName": "myDb",
    "serverConfig": {
        "domain": null,
        "_events": {},
        "_maxListeners": 10,
        "host": "xxxxxxxxxxxxxxxxxxxxxxxx-myApp-myDomain.rhcloud.com",
        "port": 12345,
        "options": {
            "auto_reconnect": true
        },
        "internalMaster": false,
        "connected": false,
        "poolSize": 5,
        "disableDriverBSONSizeCheck": false,
        "ssl": false,
        "_used": true,
        "_readPreference": null,
        "socketOptions": {},
        "logger": {
            "error": "[Function]",
            "log": "[Function]",
            "debug": "[Function]"
        },
        "eventHandlers": {
            "error": [],
            "parseError": [],
            "poolReady": [],
            "message": [],
            "close": [],
            "timeout": []
        },
        "_serverState": "disconnected",
        "_state": {
            "runtimeStats": {
                "queryStats": {
                    "m_n": 0,
                    "m_oldM": 0,
                    "m_oldS": 0,
                    "m_newM": 0,
                    "m_newS": 0,
                    "numDataValues": 0,
                    "mean": 0,
                    "variance": 0,
                    "standardDeviation": 0,
                    "sScore": 0
                }
            }
        },
        "recordQueryStats": false
    },
    "options": {},
    "_applicationClosed": false,
    "bsonLib": {
        "Code": "[Function]",
        "Symbol": "[Function]",
        "BSON": "[Function]",
        "DBRef": "[Function]",
        "Binary": "[Function]",
        "ObjectID": "[Function]",
        "Long": "[Function]",
        "Timestamp": "[Function]",
        "Double": "[Function]",
        "MinKey": "[Function]",
        "MaxKey": "[Function]"
    },
    "bson": {},
    "bson_deserializer": "[ Circular {bsonLib} ]",
    "bson_serializer": "[ Circular {bsonLib} ]",
    "_state": "disconnected",
    "pkFactory": "[Function]",
    "forceServerObjectId": false,
    "safe": false,
    "notReplied": {},
    "isInitializing": true,
    "auths": [],
    "openCalled": false,
    "commands": [],
    "_callBackStore": {
        "domain": null,
        "_events": {},
        "_maxListeners": 10,
        "_notReplied": {}
    },
    "logger": "[ Circular {logger} ]",
    "slaveOk": false,
    "tag": 1460656848883,
    "eventHandlers": {
        "error": [],
        "parseError": [],
        "poolReady": [],
        "message": [],
        "close": []
    },
    "serializeFunctions": false,
    "raw": false,
    "recordQueryStats": false,
    "reaperEnabled": false,
    "_lastReaperTimestamp": 1460656848883,
    "retryMiliSeconds": 1000,
    "numberOfRetries": 60,
    "reaperInterval": 10000,
    "reaperTimeout": 30000

}

注意：主机、端口和数据库名称字段已修改以保护隐私

此db对象与正确连接的db对象只有两个字段不同

…db.serverConfig._serverState和db._state都等于“已连接”与“已断开”

感谢收到任何成功完成我努力的人的来信

---

谢谢

你能不能把问题中的建议本身包括进去，而不仅仅是link@Kostia-我根据您的建议添加了建议的简要摘要。