Mongodb服务无法启动

Question

我不知道为什么,昨天服务工作正常,突然间我无法启动MongoDB.

[root@purr ~]# service mongod start
Starting mongod: Thu Aug 29 23:26:07.550 
Thu Aug 29 23:26:07.550 warning: 32-bit servers don't have journaling enabled by default. Please use --journal if you want durability.
Thu Aug 29 23:26:07.550 
about to fork child process, waiting until server is ready for connections.
forked process: 5078
all output going to: /var/log/mongo/mongod.log
ERROR: child process failed, exited with error number 100
                                                           [FAILED]

我查看了/var/log/mongo/mongod.log以及以下内容:

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


Thu Aug 29 23:29:05.874 [initandlisten] MongoDB starting : pid=5118 port=27017 dbpath=/var/lib/mongo 32-bit host=purr.ipetfindr.com
Thu Aug 29 23:29:05.874 [initandlisten]
Thu Aug 29 23:29:05.874 [initandlisten] ** NOTE: This is a 32 bit MongoDB binary.
Thu Aug 29 23:29:05.874 [initandlisten] **   32 bit builds are limited to less than 2GB of data (or less with --journal).
Thu Aug 29 23:29:05.874 [initandlisten] **   Note that journaling defaults to off for 32 bit and is currently off.
Thu Aug 29 23:29:05.874 [initandlisten] **   See http://dochub.mongodb.org/core/32bit
Thu Aug 29 23:29:05.874 [initandlisten]
Thu Aug 29 23:29:05.874 [initandlisten] ** WARNING: You are running in OpenVZ. This is known to be broken!!!
Thu Aug 29 23:29:05.875 [initandlisten]
Thu Aug 29 23:29:05.875 [initandlisten] db version v2.4.6
Thu Aug 29 23:29:05.875 [initandlisten] git version: b9925db5eac369d77a3a5f5d98a145eaaacd9673
Thu Aug 29 23:29:05.875 [initandlisten] build 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_49
Thu Aug 29 23:29:05.875 [initandlisten] allocator: system
Thu Aug 29 23:29:05.875 [initandlisten] options: { config: "/etc/mongod.conf", dbpath: "/var/lib/mongo", fork: "true", logappend: "true", logpath: "/var/log/mongo/mongod.log", pidf$
**************
Unclean shutdown detected.
Please visit http://dochub.mongodb.org/core/repair for recovery instructions.
*************
Thu Aug 29 23:29:05.875 [initandlisten] exception in initAndListen: 12596 old lock file, terminating
Thu Aug 29 23:29:05.875 dbexit:
Thu Aug 29 23:29:05.875 [initandlisten] shutdown: going to close listening sockets...
Thu Aug 29 23:29:05.875 [initandlisten] shutdown: going to flush diaglog...
Thu Aug 29 23:29:05.875 [initandlisten] shutdown: going to close sockets...
Thu Aug 29 23:29:05.875 [initandlisten] shutdown: waiting for fs preallocator...
Thu Aug 29 23:29:05.875 [initandlisten] shutdown: closing all files...
Thu Aug 29 23:29:05.875 [initandlisten] closeAllFiles() finished
Thu Aug 29 23:29:05.875 dbexit: really exiting now

我应该如何解决此问题,重新启动服务器,服务似乎不起作用.

修复后出错

不知道该怎么做是说错误无法打开文件/ var/lib/mongo/local.ns终止

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


Fri Aug 30 04:49:43.041 [initandlisten] MongoDB starting : pid=3300 port=27017 dbpath=/var/lib/mongo 32-bit host=purr.ipetfindr.com
Fri Aug 30 04:49:43.041 [initandlisten]
Fri Aug 30 04:49:43.041 [initandlisten] ** NOTE: This is a 32 bit MongoDB binary.
Fri Aug 30 04:49:43.041 [initandlisten] **   32 bit builds are limited to less than 2GB of data (or less with --journal).
Fri Aug 30 04:49:43.041 [initandlisten] **   Note that journaling defaults to off for 32 bit and is currently off.
Fri Aug 30 04:49:43.041 [initandlisten] **   See http://dochub.mongodb.org/core/32bit
Fri Aug 30 04:49:43.041 [initandlisten]
Fri Aug 30 04:49:43.041 [initandlisten] ** WARNING: You are running in OpenVZ. This is known to be broken!!!
Fri Aug 30 04:49:43.041 [initandlisten]
Fri Aug 30 04:49:43.041 [initandlisten] db version v2.4.6
Fri Aug 30 04:49:43.041 [initandlisten] git version: b9925db5eac369d77a3a5f5d98a145eaaacd9673
Fri Aug 30 04:49:43.041 [initandlisten] build 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_49
Fri Aug 30 04:49:43.041 [initandlisten] allocator: system
Fri Aug 30 04:49:43.041 [initandlisten] options: { config: "/etc/mongod.conf", dbpath: "/var/lib/mongo", fork: "true", logappend: "true", logpath: "/var/log/mongo/mongod.log", pidf$
Fri Aug 30 04:49:43.058 [initandlisten] couldn't open /var/lib/mongo/local.ns errno:13 Permission denied
Fri Aug 30 04:49:43.058 [initandlisten] error couldn't open file /var/lib/mongo/local.ns terminating
Fri Aug 30 04:49:43.059 dbexit:
Fri Aug 30 04:49:43.059 [initandlisten] shutdown: going to close listening sockets...
Fri Aug 30 04:49:43.059 [initandlisten] shutdown: going to flush diaglog...
Fri Aug 30 04:49:43.059 [initandlisten] shutdown: going to close sockets...
Fri Aug 30 04:49:43.059 [initandlisten] shutdown: waiting for fs preallocator...
Fri Aug 30 04:49:43.059 [initandlisten] shutdown: closing all files...
Fri Aug 30 04:49:43.059 [initandlisten] closeAllFiles() finished
Fri Aug 30 04:49:43.059 [initandlisten] shutdown: removing fs lock...
Fri Aug 30 04:49:43.059 dbexit: really exiting now

Answer 1

运行修复后,我能够启动mongod proccessor但是作为root,这意味着service mongod start不起作用.要修复此问题,我需要确保数据库文件夹中的所有文件都已拥有并分组到mongod.我通过以下方式做到了这一点:

1. 检查数据库文件夹中的文件权限
   1. 请注意,你需要在我的dbpath文件夹中, /var/lib/mongo我去了cd /var/lib
   2. 我跑了 ls -l mongo
2. 这告诉我数据库由root拥有,这是错误的.我跑了以下来解决这个问题:chown -R mongod:mongod mongo.这会将文件夹中每个文件的所有者和组更改为mongod.(如果使用mongodb包,chown -R mongodb:mongodb mongodb)

我希望将来可以帮助别人.

Answer 2

我C:\mongodb\bin\mongod.exe --repair首先执行了解决这个问题.然后当我再次运行MongoDB时C:\mongodb\bin\mongod.exe,它成功启动了.

Answer 3

我通过删除d:\ test\mongodb\data\mongod.lock文件解决了这个问题.当您重新连接mongo db时,此文件将在同一文件夹中自动生成.这个对我有用.