无法启动mongodb作为sudo

Question

尝试启动时,mongodb返回与访问文件相关的错误:

root@mongo01:~# sudo service mongodb start
mongodb start/running, process 4118
root@mongo01:~# Mon Jul 25 17:03:54 [initandlisten] MongoDB starting : pid=4118 port=27017 dbpath=/var/lib/mongodb 64-bit 
Mon Jul 25 17:03:54 [initandlisten] db version v1.8.2, pdfile version 4.5
Mon Jul 25 17:03:54 [initandlisten] git version: 433bbaa14aaba6860da15bd4de8edf600f56501b
Mon Jul 25 17:03:54 [initandlisten] build sys info: Linux bs-linux64.10gen.cc 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_41
Mon Jul 25 17:03:54 [initandlisten] couldn't open /var/lib/mongodb/adrise.ns errno:13 Permission denied
Mon Jul 25 17:03:54 [initandlisten] error couldn't open file /var/lib/mongodb/adrise.ns terminating
Mon Jul 25 17:03:54 dbexit: 
Mon Jul 25 17:03:54 [initandlisten] shutdown: going to close listening sockets...
Mon Jul 25 17:03:54 [initandlisten] shutdown: going to flush diaglog...
Mon Jul 25 17:03:54 [initandlisten] shutdown: going to close sockets...
Mon Jul 25 17:03:54 [initandlisten] shutdown: waiting for fs preallocator...
Mon Jul 25 17:03:54 [initandlisten] shutdown: closing all files...
Mon Jul 25 17:03:54 closeAllFiles() finished
Mon Jul 25 17:03:54 [initandlisten] shutdown: removing fs lock...
Mon Jul 25 17:03:54 dbexit: really exiting now

要么

Mon Jul 25 17:03:22 [initandlisten] MongoDB starting : pid=4095 port=27017 dbpath=/var/lib/mongodb 64-bit 
Mon Jul 25 17:03:22 [initandlisten] db version v1.8.2, pdfile version 4.5
Mon Jul 25 17:03:22 [initandlisten] git version: 433bbaa14aaba6860da15bd4de8edf600f56501b
Mon Jul 25 17:03:22 [initandlisten] build sys info: Linux bs-linux64.10gen.cc 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_41
Mon Jul 25 17:03:22 [initandlisten] journal dir=/var/lib/mongodb/journal
Mon Jul 25 17:03:22 [initandlisten] recover : no journal files present, no recovery needed
Mon Jul 25 17:03:22 [initandlisten] info preallocateIsFaster couldn't run; returning false
Mon Jul 25 17:03:22 [initandlisten] exception in initAndListen std::exception: couldn't open file /var/lib/mongodb/journal/j._0 for writing errno:13 Permission denied, terminating
Mon Jul 25 17:03:22 dbexit: 
Mon Jul 25 17:03:22 [initandlisten] shutdown: going to close listening sockets...
Mon Jul 25 17:03:22 [initandlisten] shutdown: going to flush diaglog...
Mon Jul 25 17:03:22 [initandlisten] shutdown: going to close sockets...
Mon Jul 25 17:03:22 [initandlisten] shutdown: waiting for fs preallocator...
Mon Jul 25 17:03:22 [initandlisten] shutdown: lock for final commit...
Mon Jul 25 17:03:22 [initandlisten] shutdown: final commit...
Mon Jul 25 17:03:22 [initandlisten] shutdown: closing all files...
Mon Jul 25 17:03:22 closeAllFiles() finished
Mon Jul 25 17:03:22 [initandlisten] shutdown: journalCleanup...
Mon Jul 25 17:03:22 [initandlisten] removeJournalFiles
Mon Jul 25 17:03:22 [initandlisten] shutdown: removing fs lock...
Mon Jul 25 17:03:22 dbexit: really exiting now

当我尝试:

root @ mongo01:〜#mongodb -f /etc/mongodb.conf

它开始正常,任何想法导致问题？

谢谢

Answer 1

Mon Jul 25 17:03:54 [initandlisten] couldn't open /var/lib/mongodb/adrise.ns errno:13 Permission denied

这是权限问题,请运行以下命令:

sudo chown -R mongodb:mongodb /var/lib/mongodb

Answer 2

所以我突然遇到了这个问题,我不知道为什么.问题是upstart文件想要以用户mongodb的身份运行mongo.来自/etc/init/mongodb.conf:

if [ "x$ENABLE_MONGODB" = "xyes" ]; then exec start-stop-daemon --start --quiet --chuid mongodb --exec  /usr/bin/mongod -- --config /etc/mongodb.conf; fi

chuid部分告诉它以不同的用户身份运行,即使您以root身份运行此脚本.出于某种原因,当我ls -l进入时/var/lib/mongodb,我注意到所有文件都归root所有,这就是为什么我们的mongodb用户无法使用它们.我这样做了:

sudo chown mongodb:mongodb /var/lib/mongodb

一切都很顺利.问题首先是怎么发生的？不确定.

Answer 3

该文件是您的第一个数据文件/var/lib/mongodb/adrise.ns。实际上，具体来说，它是一个标识其他数据库文件的命名空间文件。

为了让 MongoDB 正常工作，该mongod过程需要访问两个文件夹：

1. 数据文件夹：根据您的情况/var/lib/mongodb/
2. 日志文件夹：不确定你把它放在哪里

现在，如果您以 root 用户身份运行它，它应该可以访问每个文件夹。但您应该确保没有其他人锁定此文件夹。

但是，您应该能够以较低的权限运行它。通常您只需要用户级权限，只需确保用户有权访问这些文件夹即可。如果可能的话，您需要在低于 root 的级别运行它。许多人实际上创建了一个mongodb用户并在自己的上下文中运行它。