应用程序无法启动（端口8080）不可用

Question

我正在尝试将我的node.js应用程序（带有express和mongoose）部署到openshift上，但我无法这样做。该应用程序可以在我的本地环境中完美运行。

我的入口是文件/ bin / www

我将它作为package.json文件中此行的openshift入口点

"main": "bin/www",

我已经确保按照指南使用环境变量设置mongodb连接，如下所示：

// default to a localhost configuration:
var mongoConnectionString = 'mongodb://127.0.0.1/code-blog';

// if OPENSHIFT env variables are present, use the available connection info:
if (process.env.OPENSHIFT_MONGODB_DB_PASSWORD) {
  mongoConnectionString = process.env.OPENSHIFT_MONGODB_DB_USERNAME + ":" +
  process.env.OPENSHIFT_MONGODB_DB_PASSWORD + "@" +
  process.env.OPENSHIFT_MONGODB_DB_HOST + ':' +
  process.env.OPENSHIFT_MONGODB_DB_PORT + '/' +
  process.env.OPENSHIFT_APP_NAME;
}

mongoose.connect(mongoConnectionString);

我得到的错误是：

remote: Waiting for application port (8080) become available ...
remote: Application 'codeblog' failed to start (port 8080 not available)
remote: -------------------------
remote: Git Post-Receive Result: failure
remote: Activation status: failure
remote: Activation failed for the following gears:
remote: 558a25bd5973ca7a74000162 (Error activating gear: CLIENT_ERROR: Failed to
 execute: 'control start' for /var/lib/openshift/558a25bd5973ca7a74000162/nodejs

remote: #<IO:0x00000000b49380>
remote: #<IO:0x00000000b49308>
remote: )
remote: Deployment completed with status: failure
remote: postreceive failed
To ssh://[e-mail]/~/git/codebl
og.git/
   29635a8..7a0e926  master -> master

这对我来说很奇怪，因为我没有在任何地方指定端口8080。实际上，默认端口在此处指定：

var port = normalizePort(process.env.OPENSHIFT_NODEJS_PORT || "3000");
var server_ip_address = process.env.OPENSHIFT_NODEJS_IP || "127.0.0.1";

app.set('port', port);

var server = http.createServer(app);

我不太确定从这里到哪里。我似乎没有足够的信息来确定下一步。

[edit]我添加了一些日志记录以测试该端口在哪个端口上运行，但是该日志记录语句永远不会运行。这是html" target="_blank">代码

console.log("TEST TEST TEST");

var app = require('../app');
var debug = require('debug')('ProjectTemplate:server');
var http = require('http');

var port = normalizePort(process.env.OPENSHIFT_NODEJS_PORT || "3000");
var server_ip_address = process.env.OPENSHIFT_NODEJS_IP || "127.0.0.1";

console.log("PORT: ", port);

和输出

TEST TEST TEST
module.js:340
    throw err;
    ^
Error: Cannot find module './routes/logIn'
    at Function.Module._resolveFilename (module.js:338:15)
    at Function.Module._load (module.js:280:25)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at Object.<anonymous> (/var/lib/openshift/558a25bd5973ca7a74000162/app-root/           runtime/repo/app.js:26:13)

TEST TEST TEST来自入口点文件开头的日志记录语句。似乎在命中之前就失败了。console.log("PORT: ", port);这很可能与app.js建立MongoDb连接有关。

[/编辑]

Answer 1

该错误原来是与端口无关的一般性错误。显然，如果出现致命的JavaScript错误，它会显示此消息。