MongoDB configuration in Ubuntu14.04, mongodbubuntu14.04

MongoDB configuration in Ubuntu14.04, mongodbubuntu14.04

I installed Ubuntu14.04 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:

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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