无法连接到服务器127.0.0.1:27017

Question

我收到以下错误:

alex@alex-K43U:/$ mongo
MongoDB shell version: 2.2.0
connecting to: test
Thu Oct 11 11:46:53 Error: couldn't connect to server 127.0.0.1:27017 src/mongo/shell/mongo.js:91
exception: connect failed
alex@alex-K43U:/$ 

当我尝试启动mongodb时会发生这种情况:

* Starting database mongodb                                             [fail]

我已经试过了 mongo --repair

我将chown和chmod设为var,lib和data/db以及log mongodb.

不知道还能做什么.有什么建议？

mongodb.log:

***** SERVER RESTARTED *****


Thu Oct 11 08:29:40 
Thu Oct 11 08:29:40 warning: 32-bit servers don't have journaling enabled by default. Please use --journal if you want durability.
Thu Oct 11 08:29:40 
Thu Oct 11 08:29:41 [initandlisten] MongoDB starting : pid=1052 port=27017 dbpath=/var/lib/mongodb 32-bit host=alex-K43U
Thu Oct 11 08:29:41 [initandlisten] 
Thu Oct 11 08:29:41 [initandlisten] ** NOTE: when using MongoDB 32 bit, you are limited to about 2 gigabytes of data
Thu Oct 11 08:29:41 [initandlisten] **       see http://blog.mongodb.org/post/137788967/32-bit-limitations
Thu Oct 11 08:29:41 [initandlisten] **       with --journal, the limit is lower
Thu Oct 11 08:29:41 [initandlisten] 
Thu Oct 11 08:29:41 [initandlisten] db version v2.2.0, pdfile version 4.5
Thu Oct 11 08:29:41 [initandlisten] git version: f5e83eae9cfbec7fb7a071321928f00d1b0c5207
Thu Oct 11 08:29:41 [initandlisten] build info: Linux domU-12-31-39-01-70-B4 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:39:36 EST 2008 i686 BOOST_LIB_VERSION=1_49
Thu Oct 11 08:29:41 [initandlisten] options: { config: "/etc/mongodb.conf", dbpath: "/var/lib/mongodb", logappend: "true", logpath: "/var/log/mongodb/mongodb.log" }
Thu Oct 11 08:29:41 [initandlisten] Unable to check for journal files due to: boost::filesystem::basic_directory_iterator constructor: No such file or directory: "/var/lib/mongodb/journal"
************** 
Unclean shutdown detected.
Please visit http://dochub.mongodb.org/core/repair for recovery instructions.
*************
Thu Oct 11 08:29:41 [initandlisten] exception in initAndListen: 12596 old lock file, terminating
Thu Oct 11 08:29:41 dbexit: 
Thu Oct 11 08:29:41 [initandlisten] shutdown: going to close listening sockets...
Thu Oct 11 08:29:41 [initandlisten] shutdown: going to flush diaglog...
Thu Oct 11 08:29:41 [initandlisten] shutdown: going to close sockets...
Thu Oct 11 08:29:41 [initandlisten] shutdown: waiting for fs preallocator...
Thu Oct 11 08:29:41 [initandlisten] shutdown: closing all files...
Thu Oct 11 08:29:41 [initandlisten] closeAllFiles() finished
Thu Oct 11 08:29:41 dbexit: really exiting now

编辑:

我删除了锁然后做了mongod修复并得到了这个错误:

Thu Oct 11 12:05:37 [initandlisten] exception in initAndListen: 10309 Unable to create/open lock file: /data/db/mongod.lock errno:13 Permission denied Is a mongod instance already running?, terminating

所以我用sudo做到了:

alex@alex-K43U:~$ sudo mongod --repair
Thu Oct 11 12:05:42 
Thu Oct 11 12:05:42 warning: 32-bit servers don't have journaling enabled by default. Please use --journal if you want durability.
Thu Oct 11 12:05:42 
Thu Oct 11 12:05:42 [initandlisten] MongoDB starting : pid=5129 port=27017 dbpath=/data/db/ 32-bit host=alex-K43U
Thu Oct 11 12:05:42 [initandlisten] 
Thu Oct 11 12:05:42 [initandlisten] ** NOTE: when using MongoDB 32 bit, you are limited to about 2 gigabytes of data
Thu Oct 11 12:05:42 [initandlisten] **       see http://blog.mongodb.org/post/137788967/32-bit-limitations
Thu Oct 11 12:05:42 [initandlisten] **       with --journal, the limit is lower
Thu Oct 11 12:05:42 [initandlisten] 
Thu Oct 11 12:05:42 [initandlisten] db version v2.2.0, pdfile version 4.5
Thu Oct 11 12:05:42 [initandlisten] git version: f5e83eae9cfbec7fb7a071321928f00d1b0c5207
Thu Oct 11 12:05:42 [initandlisten] build info: Linux domU-12-31-39-01-70-B4 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:39:36 EST 2008 i686 BOOST_LIB_VERSION=1_49
Thu Oct 11 12:05:42 [initandlisten] options: { repair: true }
Thu Oct 11 12:05:42 [initandlisten] Unable to check for journal files due to: boost::filesystem::basic_directory_iterator constructor: No such file or directory: "/data/db/journal"
Thu Oct 11 12:05:42 [initandlisten] finished checking dbs
Thu Oct 11 12:05:42 dbexit: 
Thu Oct 11 12:05:42 [initandlisten] shutdown: going to close listening sockets...
Thu Oct 11 12:05:42 [initandlisten] shutdown: going to flush diaglog...
Thu Oct 11 12:05:42 [initandlisten] shutdown: going to close sockets...
Thu Oct 11 12:05:42 [initandlisten] shutdown: waiting for fs preallocator...
Thu Oct 11 12:05:42 [initandlisten] shutdown: closing all files...
Thu Oct 11 12:05:42 [initandlisten] closeAllFiles() finished
Thu Oct 11 12:05:42 [initandlisten] shutdown: removing fs lock...
Thu Oct 11 12:05:42 dbexit: really exiting now

但仍然有同样的问题.

Answer 1

Step 1: Remove lock file.
sudo rm /var/lib/mongodb/mongod.lock

Step 2: Repair mongodb. 
sudo mongod --repair 

Step 3: start mongodb.
sudo start mongodb 
or
sudo service mongodb start

Step 4: Check status of mongodb.
sudo status mongodb 
or   
sudo service mongodb status

Step 5: Start mongo console.
mongo 

Answer 2

你跑mongod前跑了mongo吗？

我从http://docs.mongodb.org/manual/tutorial/install-mongodb-on-os-x/上按照mongodb的安装说明操作,我遇到了与你mongo在实际运行mongo进程之前运行时相同的错误.mongod.我认为安装mongodb也会启动它,但你需要mongod在你做任何需要mongodb的事情之前手动启动它.

Answer 3

这是因为mongod进程失效,你必须运行下面的命令才能启动mongod进程:

sudo service mongodb stop
sudo rm /var/lib/mongodb/mongod.lock
sudo mongod --repair --dbpath /var/lib/mongodb
sudo mongod --fork --logpath /var/lib/mongodb/mongodb.log --dbpath /var/lib/mongodb 
sudo service mongodb start

希望这对你有所帮助.

Answer 4

日志表明mongodb正在终止,因为有一个旧的锁文件.

如果您不是并且没有运行日记功能,请删除锁定文件,运行修复,然后再次启动mongodb.

如果您已启用或正在运行日记功能,请参阅相关的Mongo DB文档.请注意,他们说"如果您使用日记功能运行,则不应进行修复以恢复到一致状态." 因此,如果你是日记,修复可能会使事情变得更糟.

Answer 5

尝试

sudo service mongodb start

这解决了我的问题.

Answer 6

苹果系统

如果你有 mac 并使用 mongodb4.4，你可以运行：

brew services start mongodb-community@4.4

Answer 7

检查您的文件系统可用空间,如果较少则增加它.这也可能导致mongo无法启动.检查/var/log/mongodb/mongodb.log文件.

ERROR: Insufficient free space for journal files
Please make at least 3379MB available in /var/lib/mongodb/journal or use --smallfiles

Answer 8

尝试mongod之前运行mongo.

sudo /usr/sbin/mongod 在我的opensuse上

这解决了我的问题,

Answer 9

所以首先你必须通过下面的命令删除mongod.lock文件

sudo rm /var/lib/mongodb/mongod.lock

然后通过发出以下命令重新启动mongo服务

sudo service mongod restart 

Answer 10

在 Windows 中cmd以管理员身份运行：

1.创建目录：

mkdir c:\mongo\data\db

2.安装服务：

mongod.exe --install --logpath c:\mongo\logs --logappend --bind_ip 127.0.0.1 --dbpath c:\mongo\data\db --directoryperdb

3.启动MongoDB：

net start MongoDB

4.启动Mongo shell：

c:\mongo\bin\mongo.exe

这个解决方案对我有用。