Meteor App 无法连接到 MongoDB？

Question

我正在尝试在 Windows 上运行流星应用程序。我在我的机器上运行了本地 mongodb，我还在我的系统上设置了环境变量 <b>MONGO_URL=mongodb://127.0.0.1:27017/sample</b>。仍然流星应用程序无法连接到它。可能是什么问题。

以下是错误：-

C:\workspace\node-workspace\gm>meteor
[[[[[ C:\workspace\node-workspace\gm ]]]]]

=> `Meteor server running on: <b>http://127.0.0.1:3000/</b>`

app/packages/mongo-livedata/mongo_driver.js:113
      throw err;
            ^
Error: failed to connect to [127.0.0.1:3002]
    at Server.connect.connectionPool.on.server._serverState (C:\Program Files (x86)\Meteor\packages\mongo-livedata\.npm\node_modules\mongodb\lib\mongo
db\connection\server.js:564:74)
    at EventEmitter.emit (events.js:126:20)
    at connection.on._self._poolState (C:\Program Files (x86)\Meteor\packages\mongo-livedata\.npm\node_modules\mongodb\lib\mongodb\connection\connecti
on_pool.js:124:15)
    at EventEmitter.emit (events.js:99:17)
    at Socket.errorHandler (C:\Program Files (x86)\Meteor\packages\mongo-livedata\.npm\node_modules\mongodb\lib\mongodb\connection\connection.js:465:1
0)
    at Socket.EventEmitter.emit (events.js:96:17)
    at Socket._destroy.self.errorEmitted (net.js:329:14)
    at process.startup.processNextTick.process._tickCallback (node.js:244:9)
=> Exited with code: 1
=> Meteor server restarted

app/packages/mongo-livedata/mongo_driver.js:113
      throw err;
            ^
Error: failed to connect to [127.0.0.1:3002]
    at Server.connect.connectionPool.on.server._serverState (C:\Program Files (x86)\Meteor\packages\mongo-livedata\.npm\node_modules\mongodb\lib\mongo
db\connection\server.js:564:74)
    at EventEmitter.emit (events.js:126:20)
    at connection.on._self._poolState (C:\Program Files (x86)\Meteor\packages\mongo-livedata\.npm\node_modules\mongodb\lib\mongodb\connection\connecti
on_pool.js:124:15)
    at EventEmitter.emit (events.js:99:17)
    at Socket.errorHandler (C:\Program Files (x86)\Meteor\packages\mongo-livedata\.npm\node_modules\mongodb\lib\mongodb\connection\connection.js:465:1
0)
    at Socket.EventEmitter.emit (events.js:96:17)
    at Socket._destroy.self.errorEmitted (net.js:329:14)
    at process.startup.processNextTick.process._tickCallback (node.js:244:9)
=> Exited with code: 1
=> Meteor server restarted

app/packages/mongo-livedata/mongo_driver.js:113
      throw err;
            ^
Error: failed to connect to [127.0.0.1:3002]
    at Server.connect.connectionPool.on.server._serverState (C:\Program Files (x86)\Meteor\packages\mongo-livedata\.npm\node_modules\mongodb\lib\mongo
db\connection\server.js:564:74)
    at EventEmitter.emit (events.js:126:20)
    at connection.on._self._poolState (C:\Program Files (x86)\Meteor\packages\mongo-livedata\.npm\node_modules\mongodb\lib\mongodb\connection\connecti
on_pool.js:124:15)
    at EventEmitter.emit (events.js:99:17)
    at Socket.errorHandler (C:\Program Files (x86)\Meteor\packages\mongo-livedata\.npm\node_modules\mongodb\lib\mongodb\connection\connection.js:465:1
0)
    at Socket.EventEmitter.emit (events.js:96:17)
    at Socket._destroy.self.errorEmitted (net.js:329:14)
    at process.startup.processNextTick.process._tickCallback (node.js:244:9)
=> Exited with code: 1
=> Your application is crashing. Waiting for file change.

Answer 1

鉴于堆栈跟踪表明流星仍在尝试连接到端口 3002 上的 mongoDb 实例，那么要么您没有正确设置环境变量，要么您没有重新加载 cmd shell 以获取新值。

您是如何设置 MONGO_URL 的？如果您通过系统属性设置它或更新了 autoexec.bat，那么您需要重新加载 cmd shell。

您可以通过在 cmd shell 中键入来查看当前值：

echo %MONGO_URL%

然后为当前环境设置它，你可以这样做：

set MONGO_URL=mongodb://127.0.0.1:27017/sample

Answer 2

我知道这已经有一段时间了，但我遇到了同样的问题（在 7 月 13 日），我没有时间解决这个问题，最后安装了一个运行良好的 Linux。

不过，最近我有时间回过头来。以下是google群里关于此事的一些讨论-https://groups.google.com/forum/#!topic/meteor-talk/AE6GYrJImAo

我发现 Mongo DB 进程甚至没有启动，mongo_runner.js 内部有些冲突......我的解决方案是手动启动 mongo

C:\Program Files (x86)\Meteor\mongodb\bin>mongod -port 3002 --dbpath C:\Users\username\project\.meteor\local\db

以上在所需端口上启动项目并为您的项目指定数据库文件夹...之后只需像往常一样启动流星。

Answer 3

从 0.7.1 版开始，mongodb 端口是 3001，而不是 3002。

端口通常比运行 Meteor 的端口高 1（对于旧版本的流星，为 2）。例如，如果 Meteor 在端口 3000 上运行，MongoDB 将在端口 3001