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.
  - 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
      - Viewing the List of Alarms
        Specifies how to view the list of alarms raised, using either the Control System or the CLI.
      - Configuring Alarm Settings
        Set the severity and notifications for each alarm using either the Control System or the CLI.
      - Configuring the Alarm Threshold Using the CLI
        You can configure the alarm threshold for certain alarms. For the alarms that support threshold configuration, this topic describes the command to run to set the threshold.
      - Viewing Alarm Information
        Describes how to view alarm information using the Control System.
      - Dismissing an Alarm
        Describes how to dismiss an alarm, either manually or automatically, using either the Control System or the CLI.
      - Muting and Unmuting Alarms
        Describes how to mute and unmute alarms using either the Control System or the CLI.
    - 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.
    - 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 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.

Viewing the List of Alarms

Specifies how to view the list of alarms raised, using either the Control System or the CLI.

About this task

You can view all the alarms on the Control System and using the CLI.

Viewing the List of Alarms in the Control System

Procedure

Log in to the Control System and click Admin > Cluster Settings > Alarms.
The ALL ALARMS pane displays all the alarms on the cluster.

Select:

Cluster Alarms — indicate problems that affect the cluster as a whole
Node Alarms — indicate problems on individual nodes
Table Alarms — indicate table replication-related problems
User/Group Alarms — indicate problems with user or group quotas
Volume Alarms — indicate problems in individual volumes

For the selected view, the pane displays the following for each alarm:

Column Name	Column Description
Alarm Name	The name of the alarm.
Severity	The user-defined severity for the alarm.
Description	A one-line description of the alarm.
Info	Information on the alarm including alarm name, description, and recommended action to address the alarm.

You can click the alarm name to configure alarm settings.

Retrieving the List of Alarms Using the CLI or REST API

About this task

The basic command to list all alarms by type (Cluster, Node, User, or Volume) is:

maprcli alarm list -type (cluster|node|volume|AE)

For complete reference information, see alarm list.

Partners Support Dev-Hub Community Training ALA Privacy Policy Glossary

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