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7.5.2. Configuring MongoDB


The MongoDB configuration consists of three main steps:
  • Configuring authentication
  • Configuring default database size
  • Configuring the firewall and mongod daemon

Procedure 7.9. To Configure Authentication and Default Database Size for MongoDB:

  1. Open the /etc/mongodb.conf file.
  2. Locate the line beginning with auth = and ensure it is set to true:
    auth = true
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  3. Add the following line at the end of the file:
    smallfiles = true
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  4. Ensure no other lines exist that begin with either auth = or smallfiles =.
  5. Save and close the file.

Procedure 7.10. To Configure the Firewall and Mongo Daemon:

  1. Ensure the mongod daemon starts on boot:
    # chkconfig mongod on
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  2. Start the mongod daemon immediately:
    # service mongod start
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Note

If you use the kickstart or bash script, the configure_datastore function performs these steps.
Verifying MongoDB Configuration

Before continuing with further configuration, verify that you can connect to the MongoDB database:

# mongo
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This command starts a MongoDB interactive session. Press CTRL+D to leave this session and return to the command shell.

Important

The start and restart actions of MongoDB return before the daemon is ready to accept connections. As a result, MongoDB takes time to initialize the journal, which can take several minutes. If you receive the message "Error: couldn't connect to server 127.0.0.1" with the mongo command, wait and try again. When MongoDB is ready, it will write a "waiting for connections" message in the /var/log/mongodb/mongodb.log file. A connection to the MongoDB database is required for the ensuing steps.
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