node.js - 错误 : failed to connect to [localhost:27017] when running MEAN app on HEROKU

Question

我正在写我的第二个 MEAN应用程序。第一个是手动构建聚合组件(我不知道 MEAN )并将其托管在 HEROKU；我试图使用 MONGOOSE但由于在 HEROKU 连接数据库时出现问题而放弃了——它在我的 MAC 上运行良好。这一次它可以在我的 MAC 上运行，但我仍然遇到连接问题；我不想抛弃 MONGOOSE。在这一点上，我所拥有的只是基于其 zip 文件构建的 vanilla MEAN 应用程序，该 zip 文件是从 MEAN GitHUB repository 下载的。 .请参阅下面我从 HEROKU 获得的日志:

2013-09-10T01:33:28.045816+00:00 heroku[web.1]: Starting process with command `grunt`
2013-09-10T01:33:29.526090+00:00 app[web.1]: Running "jshint:all" (jshint) task
2013-09-10T01:33:29.567534+00:00 app[web.1]: >> 1 file lint free.
2013-09-10T01:33:29.568809+00:00 app[web.1]: 
2013-09-10T01:33:29.568809+00:00 app[web.1]: Running "compass:dist" (compass) task
2013-09-10T01:33:29.573055+00:00 app[web.1]: Warning: You need to have Ruby and Compass installed and in your system PATH for this task to work. More info: https://github.com/gruntjs/grunt-contrib-compass Used --force, continuing.
2013-09-10T01:33:29.574527+00:00 app[web.1]: Warning: Cannot read property 'stdout' of undefined Used --force, continuing.
2013-09-10T01:33:29.574641+00:00 app[web.1]: 
2013-09-10T01:33:29.575774+00:00 app[web.1]: Warning: You need to have Ruby and Compass installed and in your system PATH for this task to work. More info: https://github.com/gruntjs/grunt-contrib-compass Used --force, continuing.
2013-09-10T01:33:29.574641+00:00 app[web.1]: Running "compass:dev" (compass) task
2013-09-10T01:33:29.576128+00:00 app[web.1]: Running "concurrent:target" (concurrent) task
2013-09-10T01:33:29.576043+00:00 app[web.1]: 
2013-09-10T01:33:30.414023+00:00 app[web.1]: Running "nodemon:dev" (nodemon) task
2013-09-10T01:33:30.511082+00:00 app[web.1]: 10 Sep 01:33:30 - [nodemon] v0.7.10
2013-09-10T01:33:30.511537+00:00 app[web.1]: 10 Sep 01:33:30 - [nodemon] to restart at any time, enter `rs`
2013-09-10T01:33:30.511664+00:00 app[web.1]: 10 Sep 01:33:30 - [nodemon] watching: /app/config
2013-09-10T01:33:30.511664+00:00 app[web.1]: 10 Sep 01:33:30 - [nodemon] watching: /app/app
2013-09-10T01:33:30.536018+00:00 app[web.1]: 10 Sep 01:33:30 - [nodemon] Unable to write to temp directory. If you experience problems with file reloading, ensure /tmp is writable.
2013-09-10T01:33:30.550590+00:00 app[web.1]: debugger listening on port 5858
2013-09-10T01:33:30.578354+00:00 app[web.1]: Running "watch" task
2013-09-10T01:33:30.624330+00:00 app[web.1]: Waiting...10 Sep 01:33:30 - [nodemon] reading ignore list
2013-09-10T01:33:31.152639+00:00 app[web.1]:         throw er; // Unhandled 'error' event
2013-09-10T01:33:31.154862+00:00 app[web.1]:     at null.<anonymous> (/app/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/server.js:540:74)
2013-09-10T01:33:31.148967+00:00 app[web.1]: Express app started on port 3000
2013-09-10T01:33:31.152143+00:00 app[web.1]: 
2013-09-10T01:33:31.152401+00:00 app[web.1]: events.js:72
2013-09-10T01:33:31.154862+00:00 app[web.1]: Error: failed to connect to [localhost:27017]
2013-09-10T01:33:31.154862+00:00 app[web.1]:     at null.<anonymous> (/app/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/connection_pool.js:140:15)
2013-09-10T01:33:31.154862+00:00 app[web.1]:     at Socket.<anonymous> (/app/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/connection.js:478:10)
2013-09-10T01:33:31.154862+00:00 app[web.1]:     at Socket.EventEmitter.emit (events.js:95:17)
2013-09-10T01:33:31.154862+00:00 app[web.1]:     at process._tickCallback (node.js:415:13)

非常欢迎任何意见或建议。提前致谢。

Answer 1

您需要在某个地方托管 MongoDB。有许多 MongoDB 托管服务，MongoHQ 和 MongoLab 最受欢迎。我使用 MongoHQ 取得了不错的效果，但我必须承认我没有对我的系统施加压力。您可以注册免费试用(我认为您可以获得 512MB)，完成后，将您的连接字符串替换为(您将在注册时获得所有详细信息):

'mongodb://username:password@domain:port/dbName'