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.
- Planning the Cluster
  Describes information and factors used in planning your cluster.
- Installing Core and Ecosystem Components
  Describes how to install HPE Ezmeral Data Fabric software and ecosystem components with or without the Installer.
  - Data Fabric Repositories and Packages
    Describes the repositories for Data Fabric software and the ecosystem components.
  - Package Dependencies
    Lists the interdependencies between packages across all the supported Operating Systems
  - Preparing Each Node
    Defines minimum requirements for each node in your cluster.
  - Installing with the Installer
    The Installer automates the process of installing Data Fabric software and offers you a variety of options to complete the installation.
  - Installing without the Installer
    Describes how to install HPE Ezmeral Data Fabric software and ecosystem components manually.
    - Step 1: (Optional) Enable FIPS Mode
      If your cluster must be FIPS-compliant, you must enable FIPS mode at the operating system level before installing data-fabric software. If FIPS compliance is not needed, you can skip this step.
    - Step 2: Import the Package Key
      Before you install Data Fabric packages, you must import the package key.
    - Step 3: Prepare Packages and Repositories
      To install services correctly, each node must have access to the package files.
    - Step 4: Install Cluster Service Packages
      The installation process varies based on the location of your packages and the configuration of your cluster.
    - Step 5: Verify Installation Success
      To confirm success, check each node.
    - Step 6: Set Environment Variables
      Before starting ZooKeeper or Warden, you must complete this step.
    - Step 7: Configure Nodes
      Connect nodes to the cluster, configure security, and arrange node storage.
    - Step 8: Bring up the Cluster
      Before you can install monitoring or ecosystem components, you must enable the cluster by starting ZooKeeper and Warden and verifying the cluster installation status.
      - Starting ZooKeeper and Warden
        Starting ZooKeeper and Warden brings up the cluster.
      - Enabling the HPE Ezmeral Data Fabric Object Store
        Some post-installation steps must be performed before you can use the HPE Ezmeral Data Fabric Object Store.
      - Troubleshooting Installation
        If you are having difficulty bringing up the cluster, you have a number of options.
      - Installing the Cluster License
        You must have a valid license to unlock the enterprise features of the HPE Ezmeral Data Fabric. You can obtain a trial license by contacting your HPE support representative.
      - Verifying the Cluster Installation Status
        You can use the command line or the Control System to verify the status of your installation.
    - Step 9: Install Metrics Monitoring
      Metrics monitoring is part of monitoring, which also includes log monitoring. Monitoring components are available as part of the Ecosystem Pack (EEP) that you selected for the cluster.
    - Step 10: Install Log Monitoring
      Installing the monitoring logging components is optional. The logging components enable the collection, storage, and visualization of core logs, system logs, and ecosystem component logs. Monitoring components are available as part of the Ecosystem Pack (EEP) that you selected for the cluster.
    - Step 11: Install Ecosystem Components Manually
      You can install one or more ecosystem components from any Ecosystem Pack (EEP) that is supported by the data-fabric cluster version. An EEP consists of a group of ecosystem components that work together.
    - Step 12: Run configure.sh
      Run configure.sh with the -R option to complete the configuration of ecosystem components that were added manually.
  - Configuring the Cluster
    Describes post-installation configuration tasks for HPE Ezmeral Data Fabric clusters.
- Installing the HPE Ezmeral Data Fabric File Store
  Describes how to install File Store software with or without the Installer.
- Installing HPE Ezmeral Data Fabric Object Store
  Describes installation of the HPE Ezmeral Data Fabric Object Store software with or without the Installer.
- Installing Kubernetes Interfaces for Data Fabric
  This section describes how to plan for and install the Container Storage Interface (CSI) Storage Plugin and the Kubernetes Interfaces for Data Fabric FlexVolume Driver.
- Upgrading Core or EEP Components
  Depending on your current configuration, you may choose to upgrade the release version (core), ecosystem components, clients, or monitoring components.
- Setting Up Clients and Services
  Describes how to set up and use interfaces to an HPE Ezmeral Data Fabric cluster from a client computer.
- Setting Up the Control System
  Describes how to configure and access the Control System.
- Migrating to the HPE Ezmeral Data Fabric
  Provides instructions for migrating business-critical data and applications from an Apache Hadoop cluster to an HPE Ezmeral Data Fabric cluster.
- Applying a Patch
  You can apply a patch by using the Installer, by using the command line (a manual process), or by using an Installer Stanza.
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.
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.

Troubleshooting Installation

If you are having difficulty bringing up the cluster, you have a number of options.

Difficulty bringing up the cluster seems daunting, but most cluster problems are easily resolved. For the latest support tips, visit the Ezmeral Data Fabric Community.

Can each node connect with the others? For a list of ports that must be open, see Ports Used by HPE Ezmeral Data Fabric Software.
Is the Warden service running on each node? On the node, run the following command as root:
```
service mapr-warden status
   WARDEN running as process 18732
```
If the Warden service is not running, check the Warden log file, /opt/mapr/logs/warden.log, for clues. To restart the Warden service:
```
service mapr-warden start
```
The ZooKeeper service is not running on one or more nodes:
- Check the Warden log file for errors related to resources, such as low memory
- Check the Warden log file for errors related to user permissions
- Check for DNS and other connectivity issues between ZooKeeper nodes
The maprcli program /opt/mapr/bin/maprcli won't run
- Did you configure this node?
Instance Mismatch Node Alarm is raised
- Restart Warden to ensure that the number of file system instances is as configured.

Permission errors appear in the log

Check that data-fabric changes to the following files have not been overwritten by automated configuration management tools:

`/etc/sudoers`	Allows the `mapr` user to invoke commands as root
`/etc/security/limits.conf`	Allows HPE Ezmeral Data Fabric services to increase limits on resources such as memory, file handles, threads and processes, and maximum priority level
`/etc/udev/rules.d/99-mapr-disk.rules`	Covers permissions and ownership of raw disk devices

Before contacting your HPE support representative, collect your cluster logs by using the mapr-support-collect script.

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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