About Release 8.0.0
This site contains documentation for HPE Data Fabric release 8.0.0, including installation, configuration, administration, and reference content, as well as content for the associated ecosystem components and drivers.
8.0.0 Installation
This section contains information about installing HPE Data Fabric software. It also contains information about how to migrate data and applications from an Apache Hadoop cluster to a HPE Ezmeral Data Fabric cluster.
8.0.0 Upgrade
This section describes how to upgrade HPE Data Fabric software.
8.0.0 Data Fabric
HPE Data Fabric is the industry-leading data platform for AI and analytics that solves enterprise business needs.
8.0.0 Administration
This section describes how to manage the nodes and services that make up a cluster.
- Working with Multiple Fabrics Using the Data Fabric UI
  This section describes how you can get started learning about, installing, and using the HPE Data Fabric.
- Administering Users and Clusters
  Lists topics that help manage a Data Fabric cluster.
- Administering Nodes
  Provides a synopsis of managing nodes in a cluster.
- Administering Volumes
  This section provide information about how to organize and manage data using volumes, a unique feature of HPE Data Fabric clusters.
- Administering Files and Directories
- Administering Tables
  Administration of the HPE Data Fabric Database is done primarily via the command line (maprcli) or with the Managed Control System (MCS). Regardless of whether the HPE Data Fabric Database table is used for binary files or JSON documents, the same types of commands are used with slightly different parameter options. HPE Data Fabric Database administration is associated with tables, columns and column families, and table regions.
- Administering Streams
- Administering Data Fabric Gateways
  A HPE Data Fabric gateway mediates one-way communication between a source HPE Data Fabric cluster and a destination cluster. You can replicate HPE Data Fabric Database tables (binary and JSON) and HPE Data Fabric Streams streams. HPE Data Fabric gateways also apply updates from JSON tables to their secondary indexes and propagate Change Data Capture (CDC) logs.
- Administering Services
- Monitoring the Cluster
  This section describes how to monitor the health and performance of a MapR cluster.
- Configuring Security
  Describes how to configure security and manage secure clusters.
- Managing Secure Clusters
  Provides procedures that will enable you to use Data Fabric clusters securely.
- Administering the Data Access Gateway
  The HPE Data Fabric Data Access Gateway is a service that acts as a proxy and gateway for translating requests between lightweight client applications and the HPE Data Fabric cluster. This section describes considerations when upgrading the service, how to modify configuration settings, and how to administer and manage the service.
- Planning for High Availability
- Administrator's Reference
  This section contains in-depth reference information for the administrator.
  - maprcli and REST API Syntax
    This section provides information about the HPE Data Fabric command API. Most commands can be run on the command-line interface (CLI), or by making REST requests programmatically or in a browser.
  - MinIO Client (mc) Commands
    Lists mc commands that you can use to perform operations, such as creating and editing buckets and accounts in HPE Data Fabric Object Store.
  - Utilities
    Contains information about various scripts and utilities, that help setup, maintain, and monitor clusters.
  - Configuration Files
    This section contains reference information about various configuration files.
    - cldb.conf
      Contains the configuration for CLDB nodes.
    - core-site.xml
      Describes the core-site.xml file that contains the configuration that overrides the default core parameters.
    - daemon.conf
    - db.conf
    - .dfs_attributes
    - disktab
      Describes the use of the disktab file.
    - exports
    - gateway.conf
    - mapr.login.conf
    - mapr-clusters.conf
      Provides information and instructions for configuring clusters to create the global namespace.
    - mapred-site.xml
      Lists the parameters for MapReduce configuration.
    - mfs.conf
      Lists the parameters of the MFS configuration file.
    - nfsserver.conf
      Lists the parameters for the Data Fabric NFS server.
    - warden.conf
      Lists the configuration parameters for Warden.
    - warden.<servicename>.conf
      Describes the service configuration files that Warden supports.
    - yarn-site.xml
      Describes the YARN configuration options.
    - zoo.cfg
      Lists the ZooKeeper configuration file.
    - zookeeper-env.sh
      Use this file to load or unload JMX parameters for ZooKeeper.
  - Alarms Reference
    The pages in this section provide details about all of the types of alarms.
  - HPE Data Fabric Environment
    This section provides information associated with the Data Fabric environment.
- Troubleshooting Cluster Administration
  Lists the common errors and their solutions.
- Best Practices for Backing Up HPE Data Fabric Information
  Lists the best practices and performance considerations to follow when backing up HPE Data Fabric information.
- IPv6 Support in Data Fabric
  Describes the IPv6 support feature for Data Fabric.
8.0.0 Development
This section contains information related to application development for Ezmeral ecosystem components and HPE Data Fabric products, including the file system, Database (Key-Value and JSON), and Event Streams.
Other Docs
This section contains release-independent information, including: Installer documentation, Ecosystem release notes, interoperability matrices, security vulnerabilities, and links to other Data Fabric version documentation.
Glossary
Definitions for commonly used terms in MapR Converged Data Platform environments.

daemon.conf

The file /opt/mapr/conf/daemon.conf specifies the user and group under which MapR services run, and whether all Data Fabric services run as the specified user/group, or only ZooKeeper and FileServer. The configuration parameters operate as follows:

If mapr.daemon.user and mapr.daemon.group are set, the ZooKeeper and FileServer run as the specified user/group. Otherwise, they run as root.
If mapr.daemon.runuser.warden=1, all services started by the warden run as the specified user. Otherwise, they run as root.

Sample daemon.conf file

mapr.daemon.user=mapr
mapr.daemon.group=mapr
mapr.daemon.runuser.warden=1

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HPE Data Fabric 8.0.0 Software Documentation
Abstract	This site contains documentation for HPE Data Fabric Software version 8.0.0 including installation, configuration, administration, and reference content, as well as content for the associated bundled ecosystem components and drivers.
Published	October 2025
Edition	8.0.0
Topic last updated	2024-06-20