About Release 7.9.0
This site contains documentation for HPE Ezmeral Data Fabric release 7.9.0, including installation, configuration, administration, and reference content, as well as content for the associated ecosystem components and drivers.
7.9.0 Installation
This section contains information about installing and upgrading HPE Ezmeral 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.
7.9.0 Data Fabric
HPE Ezmeral Data Fabric is the industry-leading data platform for AI and analytics that solves enterprise business needs.
7.9.0 Administration
This section describes how to manage the nodes and services that make up a cluster.
- Administering Users and Clusters
  Lists topics that help manage a data-fabric cluster.
  - Managing Users and Groups
    Provides a brief introduction to user management on an HPE Ezmeral Data Fabric cluster.
    - Setting Up Email Addresses
      Describes how to set up email addresses using the Control System and the CLI.
    - Setting Up SMTP
      Describes how to set up SMTP information using the Control System and the CLI.
    - Configuring SSO
      Describes how the HPE Ezmeral Data Fabric supports single sign-on (SSO) and how to configure it.
    - Managing Permissions
      Provides an overview of managing user permissions at the cluster, volume and file system levels.
  - Managing the Cluster
    Lists the settings for managing the 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 Ezmeral Data Fabric clusters.
- Administering Files and Directories
- Administering Tables
  Administration of the HPE Ezmeral Data Fabric Database is done primarily via the command line (maprcli) or with the Managed Control System (MCS). Regardless of whether the HPE Ezmeral 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 Ezmeral Data Fabric Database administration is associated with tables, columns and column families, and table regions.
- Administering Streams
- Administering Data Fabric Gateways
  A HPE Ezmeral Data Fabric gateway mediates one-way communication between a source HPE Ezmeral Data Fabric cluster and a destination cluster. You can replicate HPE Ezmeral Data Fabric Database tables (binary and JSON) and HPE Ezmeral Data Fabric Streams streams. HPE Ezmeral 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 Ezmeral 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 Ezmeral 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.
- Troubleshooting Cluster Administration
  Lists the common errors and their solutions.
- Best Practices for Backing Up HPE Ezmeral Data Fabric Information
  Lists the best practices and performance considerations to follow when backing up HPE Ezmeral Data Fabric information.
- IPv6 Support in Data Fabric
  Describes the IPv6 support feature for Data Fabric.
7.9.0 Development
This section contains information related to application development for Ezmeral ecosystem components and HPE Ezmeral 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.

Managing Users and Groups

Provides a brief introduction to user management on an HPE Ezmeral Data Fabric cluster.

The following two users are important when installing and setting up Data Fabric software:

root is used to install Data Fabric software on each node.
The “Data Fabric user” is the user that Data Fabric services run as (typically named mapr or hadoop) on each node. The Data Fabric user has full privileges to administer the cluster. Administrative privilege with varying levels of control can be assigned to other users as well.

Before installing Data Fabric, decide on the name, user ID (UID) and group ID (GID) for the Data Fabric user. The Data Fabric user must exist on each node, and the user name, UID and primary GID must match on all nodes.

When adding a user to a cluster node, specify the --uid option with the useradd command to guarantee that the user has the same UID on all machines.
When adding a group to a cluster node, specify the --gid option with the groupadd command to guarantee that the group has the same GID on all machines.

Data Fabric uses the native operating system configuration of each node to authenticate users and groups for access to the cluster. If you are deploying a large cluster, you should consider configuring all nodes to use LDAP or another user management system. You can use the Control System to grant specific permissions to particular users and groups. For more information, see Setting User Permissions. Each user can be restricted to a specific amount of disk usage. For more information, see Setting Quotas for Users and Groups.

By default, Data Fabric grants the user root full administrative permissions. If the nodes do not have an explicit root login, grant full permissions to another user after deployment. See Adding Cluster Permissions.

On the node where you plan to run the mapr-apiserver (the Control System), install Pluggable Authentication Modules (PAM). See PAM Configuration for more information.

You can perform the following procedures to manage users and groups in a Data Fabric cluster using the Control System (click Admin > User Settings) and the CLI:

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HPE Ezmeral Data Fabric – Customer-Managed 7.9.0 Documentation
Abstract	This site contains documentation for the customer-managed platform of the HPE Ezmeral Data Fabric version 7.9.0 including installation, configuration, administration, and reference content, as well as content for the associated bundled ecosystem components and drivers.
Published	November 2024
Edition	7.9.0