无法启动mongod服务

Question

我使用this link中的信息安装了mongodb。但是，当我使用服务mongod start命令时，出现以下错误。有人可以帮我解决问题吗？

[[email protected] ~]$ service mongod start 
/etc/init.d/mongod: line 54: ulimit: open files: cannot modify limit: Operation not permitted 
/etc/init.d/mongod: line 56: ulimit: max user processes: cannot modify limit: Operation not permitted 
Starting mongod: runuser: using restricted shell /bin/false 
runuser: cannot set groups: Operation not permitted 
                  [FAILED] 
[[email protected] ~]$ sudo service mongod start 
[sudo] password for Piyush: 
Starting mongod:           [FAILED] 

我试过使用--repair命令。我得到了以下的输出：

[[email protected] ~]$ sudo mongod --repair 
2014-09-24T00:05:06.089-0400 [initandlisten] MongoDB starting : pid=2807 port=27017 dbpath=/data/db 64-bit host=localhost.localdomain 
2014-09-24T00:05:06.089-0400 [initandlisten] db version v2.6.4 
2014-09-24T00:05:06.089-0400 [initandlisten] git version: 3a830be0eb92d772aa855ebb711ac91d658ee910 
2014-09-24T00:05:06.089-0400 [initandlisten] build info: Linux build7.nj1.10gen.cc 2.6.32-431.3.1.el6.x86_64 #1 SMP Fri Jan 3 21:39:27 UTC 2014 x86_64 BOOST_LIB_VERSION=1_49 
2014-09-24T00:05:06.089-0400 [initandlisten] allocator: tcmalloc 
2014-09-24T00:05:06.090-0400 [initandlisten] options: { repair: true } 
2014-09-24T00:05:06.106-0400 [initandlisten] finished checking dbs 
2014-09-24T00:05:06.106-0400 [initandlisten] dbexit: 
2014-09-24T00:05:06.106-0400 [initandlisten] shutdown: going to close listening sockets... 
2014-09-24T00:05:06.106-0400 [initandlisten] shutdown: going to flush diaglog... 
2014-09-24T00:05:06.106-0400 [initandlisten] shutdown: going to close sockets... 
2014-09-24T00:05:06.106-0400 [initandlisten] shutdown: waiting for fs preallocator... 
2014-09-24T00:05:06.106-0400 [initandlisten] shutdown: closing all files... 
2014-09-24T00:05:06.106-0400 [initandlisten] closeAllFiles() finished 
2014-09-24T00:05:06.107-0400 [initandlisten] shutdown: removing fs lock... 
2014-09-24T00:05:06.107-0400 [initandlisten] dbexit: really exiting now 

[编辑1] _____________________________________________________________________________

在日志文件中我看到：

[[email protected] ~]# cat /var/log/mongodb/mongod.log.2014-09-24T16-00-32 
2014-09-24T11:54:23.636-0400 ***** SERVER RESTARTED ***** 
2014-09-24T11:54:23.665-0400 [initandlisten] MongoDB starting : pid=3004 port=27017 dbpath=/var/lib/mongo 64-bit host=localhost.localdomain 
2014-09-24T11:54:23.665-0400 [initandlisten] db version v2.6.4 
2014-09-24T11:54:23.665-0400 [initandlisten] git version: 3a830be0eb92d772aa855ebb711ac91d658ee910 
2014-09-24T11:54:23.665-0400 [initandlisten] build info: Linux build7.nj1.10gen.cc 2.6.32-431.3.1.el6.x86_64 #1 SMP Fri Jan 3 21:39:27 UTC 2014 x86_64 BOOST_LIB_VERSION=1_49 
2014-09-24T11:54:23.665-0400 [initandlisten] allocator: tcmalloc 
2014-09-24T11:54:23.665-0400 [initandlisten] options: { config: "/etc/mongod.conf", net: { bindIp: "127.0.0.1" }, processManagement: { fork: true, pidFilePath: "/var/run/mongodb/mongod.pid" }, storage: { dbPath: "/var/lib/mongo" }, systemLog: { destination: "file", logAppend: true, path: "/var/log/mongodb/mongod.log" } } 
2014-09-24T11:54:23.680-0400 [initandlisten] journal dir=/var/lib/mongo/journal 
2014-09-24T11:54:23.680-0400 [initandlisten] recover : no journal files present, no recovery needed 
2014-09-24T11:54:23.680-0400 [initandlisten] 
2014-09-24T11:54:23.680-0400 [initandlisten] ERROR: Insufficient free space for journal files 
2014-09-24T11:54:23.680-0400 [initandlisten] Please make at least 3379MB available in /var/lib/mongo/journal or use --smallfiles 
2014-09-24T11:54:23.680-0400 [initandlisten] 
2014-09-24T11:54:23.681-0400 [initandlisten] exception in initAndListen: 15926 Insufficient free space for journals, terminating 
2014-09-24T11:54:23.681-0400 [initandlisten] dbexit: 
2014-09-24T11:54:23.681-0400 [initandlisten] shutdown: going to close listening sockets... 
2014-09-24T11:54:23.681-0400 [initandlisten] shutdown: going to flush diaglog... 
2014-09-24T11:54:23.681-0400 [initandlisten] shutdown: going to close sockets... 
2014-09-24T11:54:23.681-0400 [initandlisten] shutdown: waiting for fs preallocator... 
2014-09-24T11:54:23.681-0400 [initandlisten] shutdown: lock for final commit... 
2014-09-24T11:54:23.681-0400 [initandlisten] shutdown: final commit... 
2014-09-24T11:54:23.681-0400 [initandlisten] shutdown: closing all files... 
2014-09-24T11:54:23.681-0400 [initandlisten] closeAllFiles() finished 
2014-09-24T11:54:23.681-0400 [initandlisten] journalCleanup... 
2014-09-24T11:54:23.681-0400 [initandlisten] removeJournalFiles 
2014-09-24T11:54:23.684-0400 [initandlisten] shutdown: removing fs lock... 
2014-09-24T11:54:23.684-0400 [initandlisten] dbexit: really exiting now 

Answer 1

1. 的--repair标志是为了修复损坏的数据库，不解决任何权限问题
2. 你显然没有按照链接的指示太紧密，因为他确实以root身份启动服务。 ;）sudo可能只允许用户调用它的超级用户权限来执行init脚本的某些部分。其他可能（尽管它们不应该）默默地失败。至少对于init脚本来说：sudo！=是root。
3. 解决此问题的方法：sudo chown mongod -R /var/log/mongodb/ && sudo chown mongod -R /var/run/mongodb && sudo chown -R /var/lib/mongo然后成为root并尝试使用sudo -u mongod mongod --dbpath /var/lib/mongo --logpath /var/log/mongodb/mongod.log手动运行mongo。如果还有其他问题，mongodb会告诉你。修正这些问题，直到手动启动mongodb为止，因为上面所写的工作完美无瑕，然后从这一点开始使用initscript。

编辑：纠正--dbpath选项，根据注释