MongoDB configuration in Ubuntu14.04

I installed Ubuntu14.04 on the Virtual Machine VirtualBox and encountered an error when deploying MongoDB. Environment: System: Ubuntu (amd64 server version) onVirtualBox, memory 256 MB, dual-core CPU. Hard Disk: 8GBext4 File System (. vdi), which has been properly connected to the 64.5% Internet, and the software source has been updated. Problem: Installing mongo-server $ sudo

I installed Ubuntu 14.04 on the Virtual Machine VirtualBox and encountered an error when deploying MongoDB.

Environment:

• System: Ubuntu (amd64 server version) on VirtualBox, memory 256 MB, dual-core CPU.
• Hard Disk: 8 GB ext4 File System (. vdi), 64.5% used
• The Internet connection is normal and the software source has been updated

Problem:

Install mongo-server

$ Sudo apt-get install mongodb-server

Then, the MongoDB service cannot be started.

$ Sudo service mongodb start # why error?

Restart the VM multiple times, delete the configuration file, and reinstall mongo-server Multiple times.

$ Sudo apt-get remove-purge mongodb-server

$ Sudo apt-get install mongodb-server

Invalid.

Analysis:

Check the configuration file/etc/mongodb. conf and track several directories based on the information. The suspicious error items include:

1. Insufficient space. The -- smallfiles parameter is prompted.
2. Access denied due to insufficient log directory permissions

The adjustment is still complicated.

Attempt to manually start the mongod process and report space and permission errors

$ Mongod-f/etc/mongodb. conf # permission Error

$ Sudo mongod-f/etc/mongodb. conf # insufficient space

Check/etc/group and/etc/passwd. MongoDB-related items exist, indicating that the MongoDB account has been created.

Trade-offs:

Directly modifying the default log directory and data file permissions may still cause problems. I don't want to worry about hierarchical directory permissions. It is known from/etc/passwd that the home of MongoDB is in/home/mongodb, so let it go back to its home.

Method:

Create a home address for MongoDB and give it Property Rights

$ Sudo mkdir-p/home/mongodb

$ Sudo chown mongodb: mongodb/home/mongodb

Adjust the configuration file, point to your hometown, and add Parameters

$ Sudo vim/etc/mongodb. conf

...

Dbpath =/home/mongodb

Logpath =/home/mongodb/mongo. log

Smallfiles = true

...

Restart again. After this adjustment, the MongoDB service can be properly maintained

$ Sudo service mongodb [start | restart | status]

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MongoDB Installation Guide http://www.linuxidc.com/Linux/2014-08/105364.htm in Ubunu 14.04

MongoDB authoritative Guide (The Definitive Guide) English version [PDF] http://www.linuxidc.com/Linux/2012-07/66735.htm

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For more information about Ubuntu, see Ubuntu special page http://www.linuxidc.com/topicnews.aspx? Tid = 2

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