Node.js AWS上的Mongodb问题

我一直在尝试在我的AWS EC2实例上安装Mongodb，以便与我编写的Node.js服务器配合使用

根据指南，我能够“安装”monogdb

但是，我将mongod和mongo的路径设置为别名，因为在我注销时这些路径被删除

alias mongod='/home/ec2-user/mongodb/mongodb-linux-x86_64-3.0.0/bin/mongod'
alias mongo='/home/ec2-user/mongodb/mongodb-linux-x86_64-3.0.0/bin/mongo'

我可以用这个别名启动mongo服务器，没问题

但是，当我运行node server.js时，我得到

/home/ec2-user/project/node_modules/mongodb/lib/mongodb/connection/base.js:246
        throw message;
              ^
AssertionError: {"name":"MongoError","ok":0,"errmsg":"ns not found"} == null
    at /home/ec2-user/project/server.js:38:13
    at /home/ec2-user/project/node_modules/mongodb/lib/mongodb/db.js:1217:20
    at /home/ec2-user/project/node_modules/mongodb/lib/mongodb/db.js:1194:16
    at /home/ec2-user/project/node_modules/mongodb/lib/mongodb/db.js:1903:9
    at Server.Base._callHandler (/home/ec2-user/project/node_modules/mongodb/lib/mongodb/connection/base.js:453:41)
    at /home/ec2-user/project/node_modules/mongodb/lib/mongodb/connection/server.js:487:18
    at MongoReply.parseBody (/home/ec2-user/project/node_modules/mongodb/lib/mongodb/responses/mongo_reply.js:68:5)
    at null.<anonymous> (/home/ec2-user/project/node_modules/mongodb/lib/mongodb/connection/server.js:445:20)
    at emit (events.js:95:17)
    at null.<anonymous> (/home/ec2-user/project/node_modules/mongodb/lib/mongodb/connection/connection_pool.js:207:13)

---

错误

ns not found

表示某些操作是在不存在的命名空间（ns）上运行的，就像您打算在

数据库上操作。collection

，但尝试在

数据库上操作。collection

。基于代码中错误发生的位置，这有意义吗？如果没有，你能从你的server.js发布有问题的行吗

2015-03-29T20:40:45.782+0000 I NETWORK  [initandlisten] connection accepted from 127.0.0.1:37394 #34 (1 connection now open)
2015-03-29T20:40:45.782+0000 I NETWORK  [initandlisten] connection accepted from 127.0.0.1:37395 #35 (2 connections now open)
2015-03-29T20:40:45.783+0000 I NETWORK  [initandlisten] connection accepted from 127.0.0.1:37396 #36 (3 connections now open)
2015-03-29T20:40:45.783+0000 I NETWORK  [initandlisten] connection accepted from 127.0.0.1:37397 #37 (4 connections now open)
2015-03-29T20:40:45.784+0000 I NETWORK  [initandlisten] connection accepted from 127.0.0.1:37398 #38 (5 connections now open)
2015-03-29T20:40:46.721+0000 I COMMAND  [conn35] CMD: drop data.page-1
2015-03-29T20:40:46.749+0000 I COMMAND  [conn36] CMD: drop data.page-2
2015-03-29T20:40:46.772+0000 I COMMAND  [conn37] CMD: drop data.page-4
2015-03-29T20:40:46.803+0000 I COMMAND  [conn38] CMD: drop data.page-3
2015-03-29T20:40:46.822+0000 I COMMAND  [conn34] CMD: drop data.page-5
2015-03-29T20:40:46.829+0000 I NETWORK  [conn34] end connection 127.0.0.1:37394 (4 connections now open)
2015-03-29T20:40:46.829+0000 I NETWORK  [conn35] end connection 127.0.0.1:37395 (3 connections now open)
2015-03-29T20:40:46.829+0000 I NETWORK  [conn36] end connection 127.0.0.1:37396 (2 connections now open)
2015-03-29T20:40:46.829+0000 I NETWORK  [conn37] end connection 127.0.0.1:37397 (1 connection now open)
2015-03-29T20:40:46.829+0000 I NETWORK  [conn38] end connection 127.0.0.1:37398 (0 connections now open)