MongoDB 正在运行但无法使用 shell 进行连接 [英] MongoDB running but can't connect using shell

问题描述

CentOS 5.x Linux 和 MongoDB 2.0.1(尝试了 main 和 legacy-static)

CentOS 5.x Linux with MongoDB 2.0.1 (tried main and legacy-static)

MongoDB 正在运行:

MongoDB is running:

root     31664  1.5  1.4  81848 11148 ?        Sl   18:40   0:00 ./mongod -f mongo.conf -vvvvv --fork

使用简单的 shell 连接访问服务器失败:

Using a simple shell connect to get to the server fails:

[root@xxxx bin]# ./mongo
MongoDB shell version: 2.0.1
connecting to: test
Mon Oct 31 18:41:32 Error: couldn't connect to server 127.0.0.1 shell/mongo.js:84
exception: connect failed

端口 28017 上的 Web 界面加载良好，从远程 Linux 主机使用 MongoDB shell 也是如此.也可以 telnet 到 localhost:27017，这意味着没有端口被阻塞.这台机器上也没有运行 SELinux.我也试过明确指定 localhost:2017/db 无济于事.

The web interface on port 28017 loads fine, as does using the MongoDB shell from a remote Linux host. Can also telnet to localhost:27017, which means no ports are blocked. There is no SELinux running on this machine as well. I have also tried explicitly specifying localhost:2017/db to no avail.

$ ./mongo remote-ip:27017
MongoDB shell version: 2.0.1
connecting to: remote-ip:27017/test
> show dbs
local   0.03125GB
>

日志在这个主题上完全是妈妈的:

Logs are completely mum on the subject:

.....
Mon Oct 31 18:40:34 [initandlisten] fd limit hard:1024 soft:1024 max conn: 819
Mon Oct 31 18:40:34 [initandlisten] waiting for connections on port 27017
Mon Oct 31 18:40:34 BackgroundJob starting: snapshot
Mon Oct 31 18:40:34 BackgroundJob starting: ClientCursorMonitor
Mon Oct 31 18:40:34 BackgroundJob starting: PeriodicTask::Runner
Mon Oct 31 18:40:34 [websvr] fd limit hard:1024 soft:1024 max conn: 819
Mon Oct 31 18:40:34 [websvr] admin web console waiting for connections on port 28017

跟踪 mongo shell 客户端仅显示一个有问题的调用:

Stracing the mongo shell client shows only one problematic call:

[pid 31708] connect(4, {sa_family=AF_INET, sin_port=htons(27017), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 EBADF (Bad file descriptor)

文件系统干净，没有 ulimit 限制(以 root 身份运行进行测试).我可以从 strace 中看到 mongo 客户端正在尝试通过 TCP (AF_INET) 进行连接，但是由于它是本地的并且 MongoDB 创建了一个文件套接字，有没有办法告诉客户端通过那个连接?或者更好的是，为什么客户会抛出 EBADF?

Filesystem is clean, no ulimit restrictions (running as root for testing). I can see from the strace that the mongo client is trying to connect via TCP (AF_INET), but since it is local and MongoDB creates a file socket, is there a way to tell the client to connect through that instead? Or better yet, why would the client be throwing a EBADF?

我的基本 Mongo conf:

My basic Mongo conf:

dbpath=/root/mongodb-linux-i686-2.0.1/data
logpath=/root/mongodb-linux-i686-2.0.1/logs/mongo.log
slowms=15
rest=1

推荐答案

我认为这个版本的 mongoDb 客户端缺少一些默认配置.尝试运行:

I think there is some default config what is missing in this version of mongoDb client. Try to run:

mongo 127.0.0.1:27017

这很奇怪，但后来我遇到了问题消失了:)(所以没有任何参数的简单命令mongo"开始为我再次工作)

It's strange, but then I've experienced the issue went away :) (so the simple command 'mongo' w/o any params started to work again for me)

[Ubuntu Linux 11.10 x64 / MongoDB 2.0.1]

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