Mongodb服务器没有启动

Question

我正在使用Django frameowrk。我的客户在js，后端使用mongodb。两天前，我停止并重新启动了Apache2 服务器，网站运行良好。今天突然网站显示500 Internel serve error。当我检查 error.log 文件时，它显示：

[.....] ConnectionError: Cannot connect to the database:
[.....] could not connect to localhost:27017: [Errno 111] Connection refused

所以，我尝试通过python 测试与mongodb 的连接，如下所示：

>>> from pymongo import Connection
>>> connection = Connection('localhost',27017)
 Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "/usr/local/lib/python2.6/dist-packages/pymongo/connection.py", line 381, in __init__
self.__find_node()
File "/usr/local/lib/python2.6/dist-packages/pymongo/connection.py", line 659, in __find_node
raise AutoReconnect(', '.join(errors))
pymongo.errors.AutoReconnect: could not connect to localhost:27017: [Errno 111] Connection refused

我还使用$mongo 测试了连接，它显示：

MongoDB shell version: 2.4.9
connecting to: test
Mon Jan 20 15:22:53.729 Error: couldn't connect to server 127.0.0.1:27017 at    src/mongo/shell/mongo.js:145
exception: connect failed

我试图寻找这个问题的答案，在那里我看到人们告诉删除mongod.lock 文件并像这里Pymongo keeps refusing the connection at 27017 和MongoDB won't start after server crash 一样重新启动mongodb，但这里写的是：http://docs.mongodb.org/manual/tutorial/recover-data-following-unexpected-shutdown/@987654337 @我真的很困惑该怎么办？我是否应该删除mongod.lock 文件？另外，我是否需要先启动mongodbserver，然后再启动apache2server？ mongodb日志文件显示：

   tail -n -30 mongodb.log 

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


   Mon Jan 20 15:10:19.740 [initandlisten] MongoDB starting : pid=8061 port=27017    dbpath=/var/lib/mongodb 64-bit host=hand
   Mon Jan 20 15:10:19.740 [initandlisten] db version v2.4.9
   Mon Jan 20 15:10:19.740 [initandlisten] git version:   xxxxx //gives the number
   Mon Jan 20 15:10:19.740 [initandlisten] build info:  xxxx 
   Mon Jan 20 15:10:19.740 [initandlisten] allocator: tcmalloc
   Mon Jan 20 15:10:19.740 [initandlisten] options: { config: "/etc/mongodb.conf", dbpath: "/var/lib/mongodb", logappend: "true", logpath: "/var/log/mongodb/mongodb.log" }
   Mon Jan 20 15:10:19.742 [initandlisten] journal dir=/var/lib/mongodb/journal
   Mon Jan 20 15:10:19.742 [initandlisten] recover : no journal files present, no recovery needed
   Mon Jan 20 15:10:19.742 [initandlisten] 
   Mon Jan 20 15:10:19.742 [initandlisten] ERROR: Insufficient free space for journal files
   Mon Jan 20 15:10:19.742 [initandlisten] Please make at least 3379MB available in /var/lib/mongodb/journal or use --smallfiles
   Mon Jan 20 15:10:19.742 [initandlisten] 
   Mon Jan 20 15:10:19.743 [initandlisten] exception in initAndListen: 15926 Insufficient free space for journals, terminating
   Mon Jan 20 15:10:19.743 dbexit: 
   Mon Jan 20 15:10:19.743 [initandlisten] shutdown: going to close listening sockets...
   Mon Jan 20 15:10:19.743 [initandlisten] shutdown: going to flush diaglog...
   Mon Jan 20 15:10:19.743 [initandlisten] shutdown: going to close sockets...
   Mon Jan 20 15:10:19.743 [initandlisten] shutdown: waiting for fs preallocator...
   Mon Jan 20 15:10:19.743 [initandlisten] shutdown: lock for final commit...
   Mon Jan 20 15:10:19.743 [initandlisten] shutdown: final commit...
   Mon Jan 20 15:10:19.743 [initandlisten] shutdown: closing all files...
   Mon Jan 20 15:10:19.743 [initandlisten] closeAllFiles() finished
   Mon Jan 20 15:10:19.743 [initandlisten] journalCleanup...
   Mon Jan 20 15:10:19.743 [initandlisten] removeJournalFiles
   Mon Jan 20 15:10:19.743 [initandlisten] shutdown: removing fs lock...
   Mon Jan 20 15:10:19.743 dbexit: really exiting now

如果我运行以下命令，它会显示：

   $ sudo service mongodb start
     Starting database: mongodb failed!

Answer 1

嗯，错误信息很清楚：您没有足够的可用磁盘空间：

ERROR: Insufficient free space for journal files
   Please make at least 3379MB available in 
                                   /var/lib/mongodb/journal or use --smallfiles
   exception in initAndListen: 15926 Insufficient free space for journals, terminating

通常，MongoDB 对磁盘空间比较贪婪。特别是，恢复和压缩使用相当多的磁盘，因为它复制了它处理的数据文件。确保你总是有一些空闲的演出。