为什么我不能启动mongodb

Question

这是错误:

(mysite)zjm1126@zjm1126-G41MT-S2:~$ /usr/local/mongodb/bin/mongod 
/usr/local/mongodb/bin/mongod --help for help and startup options
Wed Apr 27 10:02:41 [initandlisten] MongoDB starting : pid=2652 port=27017 dbpath=/data/db/ 32-bit 

** NOTE: when using MongoDB 32 bit, you are limited to about 2 gigabytes of data
**       see http://blog.mongodb.org/post/137788967/32-bit-limitations
**       with --dur, the limit is lower

Wed Apr 27 10:02:41 [initandlisten] db version v1.8.1, pdfile version 4.5
Wed Apr 27 10:02:41 [initandlisten] git version: a429cd4f535b2499cc4130b06ff7c26f41c00f04
Wed Apr 27 10:02:41 [initandlisten] build sys info: Linux bs-linux32.10gen.cc 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:39:36 EST 2008 i686 BOOST_LIB_VERSION=1_37
Wed Apr 27 10:02:41 [initandlisten] exception in initAndListen std::exception: Unable to create / open lock file for lockfilepath: /data/db/mongod.lock errno:13 Permission denied, terminating
Wed Apr 27 10:02:41 dbexit: 
Wed Apr 27 10:02:41 [initandlisten] shutdown: going to close listening sockets...
Wed Apr 27 10:02:41 [initandlisten] shutdown: going to flush diaglog...
Wed Apr 27 10:02:41 [initandlisten] shutdown: going to close sockets...
Wed Apr 27 10:02:41 [initandlisten] shutdown: waiting for fs preallocator...
Wed Apr 27 10:02:41 [initandlisten] shutdown: closing all files...
Wed Apr 27 10:02:41 closeAllFiles() finished
Wed Apr 27 10:02:41 [initandlisten] shutdown: removing fs lock...
Wed Apr 27 10:02:41 [initandlisten] couldn't remove fs lock errno:9 Bad file descriptor
Wed Apr 27 10:02:41 dbexit: really exiting now

Answer 1

启动MongoDB的用户帐户需要具有该目录的写权限/data/db/ ...您可以这样更改...

此命令将更改/data/db/所使用的用户帐户的所有者.

$ sudo chown `id -u` /data/db
$ mongod 

如果仍然遇到启动MongoDB的问题,则需要删除/data/db/mongod.lock然后在数据库上运行修复...

mongod --repair

更多关于修复命令的信息.

Answer 2

无论是sudo在通话mongod或更改的权限/data/db/mongod.lock,以便它是你写的.

Answer 3

我通过在mongodb上做了一个chown来解决这个问题.

sudo chown -R mongodb:mongodb /data

这是因为,当你这样做

ls -lrth /data
drwxr-xr-x 2 mongodb mongodb  6 Jan  5 02:31 journal
-rwxr-xr-x 1 mongodb mongodb  0 Jan  5 02:31 mongod.lock
drwxr-xr-x 2 ubuntu  root    24 May  8 20:02 configdb

希望这可以帮助.

Answer 4

确保没有运行mongod实例.

这对我有用.我首先通过查看终端来检查是否在后台运行了一个实例:ps aux | grep mongo

我看到有:48358 bla bla mongod

所以我杀了它:杀掉48358

然后我就能运行得很好.