About Release 7.0
This site contains documentation for HPE Ezmeral Data Fabric release 7.0, including installation, configuration, administration, and reference content, as well as content for the associated ecosystem components and drivers.
7.0 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.
- 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.
  - Upgrade Workflows (Release 6.x to 7.0.0)
    This section describes three common methods for upgrading from one core release to another. The workflows in this section introduce you to the high-level steps for each method and provide links to pages showing more detail.
  - Upgrading Core
    Describes the process of upgrading core.
    - Upgrading and Your License
      You do not need a new license to upgrade an HPE Ezmeral Data Fabric cluster. However, it's a good idea to check your cluster license periodically and renew the license before it expires.
    - Core Upgrade Process
      When you upgrade core, you will also upgrade a number of cluster components.
    - Planning Your Core Upgrade
      Describes how to develop a successful plan for your upgrade process.
    - When Upgrading Core with the Installer Requires an OS Upgrade
      Helps you decide if an OS upgrade is needed when you are using the Installer to upgrade to core 7.0.0 or later.
    - Upgrading Your Linux Operating System
      Upgrading to a new release of the HPE Ezmeral Data Fabric sometimes requires you to upgrade your Linux operating system. This page has pointers to more information about OS upgrades.
    - Preparing to Upgrade Core
      Complete these pre-upgrade steps for core.
    - Upgrading Core With the Installer
      If the cluster that you want to upgrade was installed using the Installer, use the Installer to upgrade core.
    - Upgrading Core Without the Installer
      You can upgrade core without using the Installer.
    - Finishing the Core Upgrade
      This section provides post-upgrade steps for core.
  - Upgrading Ecosystem Packs
    Describes how to upgrade Ecosystem Packs (EEPs), either as part of a core upgrade or to take advantage of a new EEP for the current version of core.
  - Preparing the Cluster for a Maintenance Update
    This section identifies how to prepare for applying either a minor update or a patch.
  - Performing a Maintenance Update
    Perform a maintenance update when you want to upgrade to a new patch version of core or apply a patch.
- 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.
7.0 Data Fabric
HPE Ezmeral Data Fabric is the industry-leading data platform for AI and analytics that solves enterprise business needs.
7.0 Administration
This section describes how to manage the nodes and services that make up a cluster.
7.0 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.

When Upgrading Core with the Installer Requires an OS Upgrade

Helps you decide if an OS upgrade is needed when you are using the Installer to upgrade to core 7.0.0 or later.

IMPORTANT Installer 1.18.0.3 supports core upgrades only from release 7.3.0 to 7.4.0. All EEP upgrades are supported. The Installer cannot be used on some OS versions. For details, see Installer Support Matrix. To upgrade core or EEP manually, see these topics:

OS Versions Supported by Core 7.x

Some upgrades to core 7.x require upgrading the cluster operating system. For supported OS versions, see Operating System Support Matrix.

OS Upgrade Not Required

If the Linux OS for your cluster is supported for core 7.x, you do NOT need to upgrade the OS before you upgrade core. For example, if your cluster runs core 6.2.0 on Ubuntu 18.04 and you want to upgrade to core 7.x on 18.04, you can perform the upgrade entirely through the Installer by using the Version Upgrade feature. See Upgrading Core With the Installer.

OS Upgrade Required

If the Linux OS for your cluster is not supported for core 7.x (not included in the list earlier on this page), you must upgrade the Linux OS before upgrading to core 7.x. Use the following steps. After upgrading the OS, you can use the Installer to complete the upgrade to core 7.x:

Make sure you are using the latest version of the Installer, which is required for core 7.x. For more information, see Selecting an Installer Version to Use.
Apply the latest core patch on all nodes of the cluster to be upgraded. See Applying a Patch.
Shut down the cluster as described in one of these topics:
- Shutting Down a Cluster
- Shutting Down a Cluster Using the Installer Shutdown Button
On the Installer node, shut down the Installer (requires root authentication):
```
systemctl stop mapr-installer 
```
For more information about the Installer, see Installer.
On all cluster nodes, upgrade the OS to one of the supported versions mentioned earlier on this page. For upgrade information, see Upgrading Your Linux Operating System.
On the Installer node, check the Installer status to see if it is started:
```
systemctl status mapr-installer
```
If the Installer isn't started, start it (requires root authentication):
```
systemctl start mapr-installer
```
Continue with the upgrade workflow using the Installer. See Upgrading Core With the Installer.