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RapidMiner Server home directory

The RapidMiner Server home directory is a docker volume named rapidminer-server-home – see the installation guide to install and start using RapidMiner Server. All data and directories created and used by RapidMiner Server, like the RapidMiner Server home directory, reside within this volume. This document outlines the purpose of the various files and subdirectories within the RapidMiner Server home volume.

What is the RapidMiner Server home directory?

The RapidMiner Server home directory is where your RapidMiner Server configuration and data is stored. In particular, it stores the contents of the RapidMiner Server Projects, including all user data that was uploaded from RapidMiner Studio and generated via RapidMiner processes.

What does the RapidMiner Server home directory contain?

To get access to the home directory, read Editing files within containers: the home directory.

Your RapidMiner Server home directory contains the following directories and files:

Path	Description
`.RapidMiner/`	Execution context directory used by RapidMiner Core.
`data/`	Data directory which contains persistent data like the repository content and caches.
`data/git_server/`	Contains the Project content.
`data/git_lfs_server/`	Contains the Project large files content.
`config/`	Contains application configuration.
`resources/jdbc/`	Contains externally installed JDBC drivers.
`resources/extensions/`	Contains extensions used by RapidMiner Server. See how to install extensions for more information.
`resources/licenses/`	Contains the RapidMiner Server license(s).
`resources/libs/`	Contains custom Java libraries which are used in a RapidMiner process.
`log/`	Contains log files for RapidMiner Server.

Handling disk space

By default, all user generated contents like processes, models or data sets will be put inside the RapidMiner Server home directory. As those contents can grow in size depending on your users' use of Projects, we advise to always have enough space left on the disk which is hosting the RapidMiner Server home directory.

In addition to regularly checking disk space availability as admin, RapidMiner Server provides two safety mechanisms to reject uploading any items which would exceed available disk space when using Projects. By default, at least five gigabytes are required to be available for the underlying Git and LFS storage. Although the default values should provide an adequate safety, checks can be disabled or configured further with the help of the deployment's environment. Adjust to your liking if needed.

REPOSITORIES_GIT_ENABLE_DISKSPACE_CHECK_HOOK = true
REPOSITORIES_GIT_DISKSPACE_CHECK_THRESHOLD = 5120M
REPOSITORIES_LFS_ENABLE_DISKSPACE_CHECK = true
REPOSITORIES_MIN_LFS_DISKSPACE_CHECK_THRESHOLD = 5120M

Securing the RapidMiner Server home directory

The Projects' data and other configuration files all contain information that may be considered secret (server settings, Project content, database passwords, etc).

For production use, we strongly recommend that you secure this volume against unauthorized access.

We recommend the following precautions:

Assign a separate restricted user account on the machine for running RapidMiner Server (not a root/administrator user)

If you wish to run RapidMiner Server on port 80, use a reverse proxy server like Apache HTTP Server or nginx (do not run as root/Administrator if security of the home directory is important to you)
Ensure that only the user running RapidMiner Server can access the RapidMiner Server home directory, and that this user has read, write and execute permissions, by setting file system permissions appropriately for your operating system.
Ensure that your file system is encrypted (e.g. via eCryptfs, dm-crypt, EFS or FileVault)

Technical notes

One RapidMiner Server home volume per RapidMiner Server instance!

You can only have one RapidMiner Server home volume per RapidMiner Server installation. If you have multiple RapidMiner Server installations, you will need to set up a RapidMiner Server home volume for each installation or share them cross network via proper means.
The RapidMiner Server home directory contains the RapidMiner Server Projects' contents. As this content can be uploaded by the user the file system needs to support the UTF-8 charset encoding. Example configuration for Linux via /etc/environment:
```
  export LANG=en_US.UTF-8
  export LANGUAGE=en_US:en
  export LC_ALL=en_US.UTF-8
```
As noted above, data/git_.../ contains the Projects content being managed by RapidMiner Server. We strongly recommend that customers never modify it, nor interact with it directly.

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