HPE Ezmeral Data Fabric 6.2 is In Maintenance and transitions to "End of Maintenance" in June 2024. Please see the latest documentation.

About Release 6.2
This site contains documentation for HPE Ezmeral Data Fabric release 6.2 including installation, configuration, administration, and reference content, as well as content for the associated bundled ecosystem components and drivers.
6.2 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.
6.2 Data Fabric
HPE Ezmeral Data Fabric is the industry-leading data platform for AI and analytics that solves enterprise business needs.
6.2 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 a data-fabric cluster.
  - Managing the Cluster
    Lists the settings for managing the data-fabric cluster.
    - Managing Auditing
      Provides instructions for using data-fabric auditing features.
    - Configuring Balancer Settings
      Provides an overview of the HPE Ezmeral Data Fabric disk space and replication role balancers.
    - Managing Licenses
      Provides a synopsis of adding licenses using the Control System and the CLI.
    - Setting Quota Defaults for Users and Groups
      Explains how to set disk space quotas for users and groups.
    - Specifying the Location of Gateways
      Describes how to set the location of the HPE Ezmeral Data Fabric gateways using either the Control System or the CLI.
    - Managing Alarms
    - Working with Multiple Instances of the File System
      The Multi-file system feature allows multiple instances of the file server to run on a single node in a single process.
    - Converting a Cluster from Root to Non-Root User from the Command-Line
      Provides a synopsis of changing the running user from root to a non-root user on a cluster.
    - Starting Up a Cluster
      Lists the steps to start a cluster that was previously shut down.
    - Shutting Down a Cluster
      Lists the considerations to note and the procedure to shutdown a cluster.
    - Managing Another Unsecure Cluster Using the Control System
      When logged into the Control System of one cluster, you can navigate to the Control System of another unsecure cluster.
    - Allocating Cluster Resource from the Command-Line
      Provides a general overview on allocating cluster resources for a data-fabric Hadoop 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 MapR 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.
6.2 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.

Specifying the Location of Gateways

Describes how to set the location of the HPE Ezmeral Data Fabric gateways using either the Control System or the CLI.

About this task

On every source HPE Ezmeral Data Fabric cluster, you can specify the location of the gateways by adding a DNS record to your DNS server's zone file for your domain. In your DNS server’s zone file for your domain, add a record for the cluster where gateways are located, listing the nodes to use as gateways. You can use the Control System to create a record that you can copy into a DNS configuration file, run a maprcli command to generate the record, or create a record manually. For more information on gateways, see Managing Gateways.

Specifying the Location of Gateways Using the Control System

About this task

To create a record using the Control System, follow these steps:

Procedure

Log in to the Control System on the cluster where the gateways are located.
Click Admin > Cluster Settings > Gateway.
Click Copy to Clipboard to copy the generated DNS entry.
Paste the record into your zone file.

Specifying the Location of Gateways Using the CLI

About this task

To generate a record by using the maprcli command, follow these steps:

Procedure

On the cluster where the gateways are located, run the following command.
```
maprcli cluster gateway local -format dns
```
If you want to run the command from a different cluster and point to the cluster that hosts the gateways, use the -cluster parameter to provide the name of the latter cluster.
Copy and paste the output of this command into your zone file.

Creating a Record Manually

About this task

If you want to create a record manually, use this format:

gateway.<clustername> IN TXT "<space-delimited list of hostnames>"

You can also specify IP addresses, though using hostnames is recommended so that it is easier to locate gateways if their IP addresses change. Combinations of hostnames and IP addresses are also supported. The default port is 7660. If a gateway is using a different port, append a colon to the address and then specify the port number. Here is an example entry:

gateway.newyork.bigcompany.com gw1ny.bigcompany.com gw2ny.bigcompany.com

Multi-homing is also supported. Simply separate the entries for a single node with semicolons, as in this example that uses IP addresses:

gateway.newyork.bigcompany.com 10.10.34.20 10.10.34.22 10.10.34.24;173.194.79.121