mongodb在意外关机后崩溃

时间：2012-10-11 11:28:09

标签： mongodb

在我们的vps启动后我们启动它，mongod服务没有自动启动，我们无法通过service mongod start启动它， 文件/var/log/mongo/mongod.log包含以下日志：

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


Thu Oct 11 13:51:18 
Thu Oct 11 13:51:18 warning: 32-bit servers don't have journaling enabled by default. Please use --journal if you want durability.
Thu Oct 11 13:51:18 
Thu Oct 11 13:51:18 [initandlisten] MongoDB starting : pid=3821 port=27017 dbpath=/var/lib/mongo 32-bit host=server2.paransa.org
Thu Oct 11 13:51:18 [initandlisten] 
Thu Oct 11 13:51:18 [initandlisten] ** NOTE: when using MongoDB 32 bit, you are limited to about 2 gigabytes of data
Thu Oct 11 13:51:18 [initandlisten] **       see http://blog.mongodb.org/post/137788967/32-bit-limitations
Thu Oct 11 13:51:18 [initandlisten] **       with --journal, the limit is lower
Thu Oct 11 13:51:18 [initandlisten] 
Thu Oct 11 13:51:18 [initandlisten] ** WARNING: You are running in OpenVZ. This is known to be broken!!!
Thu Oct 11 13:51:18 [initandlisten] 
Thu Oct 11 13:51:18 [initandlisten] db version v2.2.0, pdfile version 4.5
Thu Oct 11 13:51:18 [initandlisten] git version: f5e83eae9cfbec7fb7a071321928f00d1b0c5207
Thu Oct 11 13:51:18 [initandlisten] build info: Linux domU-12-31-39-01-70-B4 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:39:36 EST 2008 i686 BOOST_LIB_VERSION=1_49
Thu Oct 11 13:51:18 [initandlisten] options: { config: "/etc/mongod.conf", dbpath: "/var/lib/mongo", fork: "true", logappend: "true", logpath: "/var/log/mongo/mongod.log", pidfilepath: "/var/run/mongodb/mongod.pid" }
Thu Oct 11 13:51:18 [initandlisten] couldn't open /var/lib/mongo/mydb_main.ns errno:13 Permission denied
Thu Oct 11 13:51:18 [initandlisten] error couldn't open file /var/lib/mongo/mydb_main.ns terminating
Thu Oct 11 13:51:18 dbexit: 
Thu Oct 11 13:51:18 [initandlisten] shutdown: going to close listening sockets...
Thu Oct 11 13:51:18 [initandlisten] shutdown: going to flush diaglog...
Thu Oct 11 13:51:18 [initandlisten] shutdown: going to close sockets...
Thu Oct 11 13:51:18 [initandlisten] shutdown: waiting for fs preallocator...
Thu Oct 11 13:51:18 [initandlisten] shutdown: closing all files...
Thu Oct 11 13:51:18 [initandlisten] closeAllFiles() finished
Thu Oct 11 13:51:18 [initandlisten] shutdown: removing fs lock...
Thu Oct 11 13:51:18 dbexit: really exiting now

正如您所看到的，日志说mongo服务器无法打开* .ns文件导致许可湖

但如果我通过以下命令手动运行服务器：

mongod --dbpath=/var/lib/mongo -f /etc/mongod.conf

似乎一切都很好，关于日志文件：

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


Thu Oct 11 14:02:06 
Thu Oct 11 14:02:06 warning: 32-bit servers don't have journaling enabled by default. Please use --journal if you want durability.
Thu Oct 11 14:02:06 
Thu Oct 11 14:02:06 [initandlisten] MongoDB starting : pid=4090 port=27017 dbpath=/var/lib/mongo 32-bit host=server2.paransa.org
Thu Oct 11 14:02:06 [initandlisten] 
Thu Oct 11 14:02:06 [initandlisten] ** NOTE: when using MongoDB 32 bit, you are limited to about 2 gigabytes of data
Thu Oct 11 14:02:06 [initandlisten] **       see http://blog.mongodb.org/post/137788967/32-bit-limitations
Thu Oct 11 14:02:06 [initandlisten] **       with --journal, the limit is lower
Thu Oct 11 14:02:06 [initandlisten] 
Thu Oct 11 14:02:06 [initandlisten] ** WARNING: You are running in OpenVZ. This is known to be broken!!!
Thu Oct 11 14:02:06 [initandlisten] 
Thu Oct 11 14:02:06 [initandlisten] db version v2.2.0, pdfile version 4.5
Thu Oct 11 14:02:06 [initandlisten] git version: f5e83eae9cfbec7fb7a071321928f00d1b0c5207
Thu Oct 11 14:02:06 [initandlisten] build info: Linux domU-12-31-39-01-70-B4 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:39:36 EST 2008 i686 BOOST_LIB_VERSION=1_49
Thu Oct 11 14:02:06 [initandlisten] options: { config: "/etc/mongod.conf", dbpath: "/var/lib/mongo", fork: "true", logappend: "true", logpath: "/var/log/mongo/mongod.log", pidfilepath: "/var/run/mongodb/mongod.pid" }
Thu Oct 11 14:02:07 [websvr] admin web console waiting for connections on port 28017
Thu Oct 11 14:02:07 [initandlisten] waiting for connections on port 27017

并使用--repair arg没有帮助 （也许是因为它可以用mongod --dbpath=/var/lib/mongo -f /etc/mongod.conf手动启动并在命令中添加--repair arg，记录一切正常！...

任何建议？

5 个答案:

答案 0 :(得分：16)

这是一个权限问题，当您通过服务启动时，您正在以mongod（或mongodb等）用户身份运行，当您使用sudo或调用时，您可能以root身份运行（您在上面的注释中确认了这一点）作为根。您需要修复该文件夹中所有文件的权限，而不是以root用户身份启动该服务。

要根据您发布的内容修复文件，假设您的相关用户是mongodb并且该组是mongodb，您可以使用sudo（或以root身份）执行以下操作 - 替换您系统的相应用户：

chown -R mongodb:mongodb /var/lib/mongo
chown -R mongodb:mongodb /var/run/mongodb
chown mongodb:mongodb /var/log/mongo/mongod.log

修复这些文件夹的权限后，您应该可以再次通过服务启动。注意：如果您发布ls -al /var/lib/mongo的输出，那么我可以为您提供运行所需的确切命令

答案 1 :(得分：4)

sudo rm /data/db/mongod.lock
sudo mongod --dbpath /data/db --repair
sudo mongod --dbpath /data/db

答案 2 :(得分：2)

在CMD中启动mongod.exe之前，请尝试删除*.lock文件夹中的"\data\db"文件。

答案 3 :(得分：2)

Stop the MongoDB service

sudo service mongodb stop     删除MongoDB锁定文件

sudo rm /var/lib/mongodb/mongod.lock

Change ownership from root to the MongoDB path

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

Access the mongodb Shell   

 sudo mongod --dbpath=/var/lib/mongodb

Start the MongoDB service

sudo service mongodb start
Test the mongo application

mongo

答案 4 :(得分：1)

您可以使用以下命令从void OnCollisionEnter (Collision other) { if (other.transform.CompareTag (GameConstants.TAG_OBSTACLE)) { Vector3 splashEffectPos = groundCheck.position; if (splashEffectPos.y < 0.05f) splashEffectPos.y = 0.05f; // stop game music if (SoundManager.Instance.EnableSound) { gameSoundAS.Play (); gameMusicAS.Stop (); // gameSoundAS.PlayOneShot (ballCollisionClip); } GameObject splash = Instantiate (splashEffectPrefab, splashEffectPos, Quaternion.identity); splash.transform.SetParent (GameController.Instance.transform); GameController.Instance.GameOver (); gameObject.SetActive (false); } } 自动永久运行mongodb：

rc.local

不要担心意外关闭。

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