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
      - 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.
    - 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.

Viewing Alarm Information

Describes how to view alarm information using the Control System.

About this task

You can view notes for an alarm in the Control System.

Viewing Alarm Information in the Alarms Page

Procedure

Log in to the Control System and click Admin > Cluster Settings > Alarms.
Select:
- Cluster Alarms to view notes for the alarms that affect the cluster as a whole
- Node Alarms to view notes for the alarms that indicate problems on individual nodes
- Table Alarms to view notes for the alarms that indicate table replication-related problems
- User Alarms to view notes for the alarms that indicate problems with user or group quotas
- Volume Alarms to view notes for the alarms that indicate problems in individual volumes
Click associated with the alarm in the Info column.
The Alarm Information window displays a description of the alarm and the recommended action to address the alarm.

Viewing Alarm Information in the Active Alarms Pane

Procedure

Click

associated with the alarm in the Active Alarms pane to view information on the alarm.

The Alarm Information window displays a description of the alarm, type of alarm, information on the alarm, and recommended action to address the alarm.