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.
  - Alarms Reference
    The pages in this section provide details about all of the types of alarms.
    - User/Group Alarms
    - Cluster Alarms
    - Node Alarms
      - CLDB Service Alarm
      - Core Present Alarm
      - Debug Logging Active
      - Disk Failure
      - Duplicate Host ID
      - FileServer Service Alarm
      - Gateway Service Alarm
      - Beeswax Service Alarm
      - S3 Server Alarm
      - Heartbeat Processing Slow
      - HBMaster Service Alarm
      - HBRegion Service Alarm
      - High MAST Gateway Memory Alarm
      - HistoryServer Alarm
      - HiveMeta Alarm
      - HiveServer 2 Alarm
      - Hoststats Alarm
      - Incorrect Topology Alarm
      - Installation Directory Full Alarm
      - Instance Mismatch Alarm
      - High FileServer Memory Alarm
      - MapR User Mismatch
      - Memory Allocation Alarm
      - Memory Usage Alarm
      - High NFS4 Memory Alarm
      - NFS Gateway Alarm
      - NFSv4 Service Alarm
      - NodeManager Alarm
        Explains how to resolve the issue with the Node Manager service stopping on the node.
      - No Disk Attached Alarm
      - No Heartbeat Alarm
        Describes the NODE_ALARM_NO_HEARTBEAT alarm.
      - Security Certificate Expiry Alarm
        Describes the NODE_ALARM_CERTIFICATE_NEAR_EXPIRATION alarm.
      - Node Too Many Containers
      - PAM Misconfigured Alarm
      - ResourceManager Alarm
      - Root Partition Full Alarm
      - Tiny Buckets Flush Alarm
      - Time Skew Alarm
      - Version Alarm
      - WebServer Service Alarm
    - Table-Replication Alarms
    - Secondary Index Alarms
    - Volume 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.

Security Certificate Expiry Alarm

Describes the NODE_ALARM_CERTIFICATE_NEAR_EXPIRATION alarm.

UI Column

SSL Certificate Expiry

Logged As

NODE_ALARM_CERTIFICATE_NEAR_EXPIRATION

Meaning

SSL certificates are expiring within the number of days denoted by the CLDB setting cldb.ssl.cert.expiring.alarm.days. See cldb.conf for more information.

Resolution

Renew the SSL certificates. See Importing a Certificate Authority Signed (CA Signed) SSL Certificate Into a MapR Cluster for more information.

Configuration

None.

Specification

This alarm is raised when any of the first ten security certificates in /opt/mapr/conf/ssl_keystore or in /opt/mapr/conf/ssl_truststore are set to expire within the number of days denoted by the CLDB setting cldb.ssl.cert.expiring.alarm.days. Once the alarm is raised, the administrator needs to find out the certificates that are expiring, and renew them.

To find out the certificates that are expiring, use the /opt/mapr/server/getSSLExpiryCerts.py Python script. For example:

python /opt/mapr/server/getSSLExpiryCerts.py -print
            Below certificates expiring in the next 120 days
            Truststore:
            Alias: 100day valid until: Mon Jul 13 04:04:15 PDT 2020
            Alias: 65day valid until: Mon Jun 08 03:45:44 PDT 2020
            Alias: 70day valid until: Sat Jun 13 03:46:00 PDT 2020
            Alias: 80day valid until: Tue Jun 23 03:46:14 PDT 2020
            Alias: 90day valid until: Fri Jul 03 04:03:57 PDT 2020
            Keystore:
            Alias: 3daymay17 valid until: Thu May 21 04:20:26 PDT 2020

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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	November 2025
Edition	8.0.0
Topic last updated	2020-06-24