Skip to content

Overview

Essentials you should know about MongoDB.

Structure

  • MongoDB is a schema-less and document-oriented NoSQL database.
  • MongoDB uses documents instead of tables.
  • Mongo DB combines documents to collections.
  • The documents may have different structures. The structure is created during runtime.

Examples - database content

  • In the case of PLOSSYS 5, MongoDB contains the data of printers and jobs.
  • In the case of SEAL Print Client, MongoDB contains the complete data, e. g. documents, panels, tasks, user settings and other.

Windows - Directories and Files

MongoDB uses the following directories and files:

  • Installation directory: C:\Program Files\MongoDB\Server\4.4
  • Configuration file: C:\ProgramData\SEAL Systems\config\mongod.conf
  • Data directory: C:\ProgramData\SEAL Systems\data\seal-mongodb
  • Log file: C:\ProgramData\SEAL Systems\log\mongod.log

Linux - Directories and Files

MongoDB uses the following directories and files:

  • Installation directory: /usr/bin
  • Configuration files:
    • seal-specific: /opt/seal/etc/mongod.conf
    • original from MongoDB: /etc/mongod.conf.orig
  • Data directory: /opt/seal/data/seal-mongodb
  • Log file: /var/log/seal/mongod.log

Database Backup

You may use different ways to back up your database, for example:

  • Copy the database files
  • Call the mongodump program

Literature - database backup

For further information, refer to the original MongoDB documentation.

Access Methods

You may use different ways to access your database:

  • The mongo command line tool

  • Different user interfaces offered by several software vendors.

    For more information, refer to the original MongoDB documentation.

Caution - writing

Be careful when writing into the database!

Securing MongoDB

You may use different ways to secure MongoDB:

Hint - strongly recommended

For security reasons we strongly recommend configuring the TLS encryption.

For enhancing the security activate the user authentication for MongoDB in addition.

MongoDB in a Cluster

If you run MongoDB in a cluster, the data stored in the database are distributed. Therefore, a failure of a MongoDB node does not affect the integrity of the database.

For details on the configuration MongoDB in a cluster, refer to

Hint - automatic synchronization

The database within a cluster is synchronized automatically. Therefore you need to add or change data on one of the cluster servers only.