About Release 7.6.1
This site contains documentation for HPE Ezmeral Data Fabric release 7.6.1, including installation, configuration, administration, and reference content, as well as content for the associated ecosystem components and drivers.
7.6.1 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.
7.6.1 Data Fabric
HPE Ezmeral Data Fabric is the industry-leading data platform for AI and analytics that solves enterprise business needs.
7.6.1 Administration
This section describes how to manage the nodes and services that make up a cluster.
7.6.1 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.
- Products Covered in the HPE Ezmeral Data Fabric Documentation
  This section lists the products covered in the HPE Ezmeral Data Fabric documentation portal and provides links to the related product documentation.
- Installer
  You must download and run the Installer setup script before you can start the Installer web interface or issue Installer Stanza commands.
- Interoperability Matrices
  This section provides tables that show the operating system (OS), JDK, ecosystem, and data-fabric client support for the HPE Ezmeral Data Fabric. Check these tables for information about software compatibility.
- Ecosystem Component Release Notes
  The following release notes contain information for the components included in the HPE Ezmeral Data Fabric.
- Ecosystem Pack (EEP) Reference
  This section contains links to information that is specific to a given EEP.
- Control System Release Notes
  This section contains release notes for the HPE Ezmeral Data Fabric Control System.
- Kubernetes Interfaces for Data Fabric Release Notes
  This section contains release notes for the Kubernetes Interfaces for Data Fabric.
- Thin Client Release Notes
  This section contains release notes for the lightweight client applications that use the Data Access Gateway to send requests to the HPE Ezmeral Data Fabric.
- Security Vulnerabilities
  This section describes how to find information about potential security vulnerabilities in HPE Ezmeral Data Fabric software.
  - Container Image Vulnerabilities and CVE Reports
    Describes how HPE Ezmeral Engineering provides software updates to address container image vulnerabilities.
  - Web Browser Security Issues
    This section describes security issues with web browsers.
    - Unable to Establish a Secure Connection
      This section describes secure connection issues.
    - Weak Ephemeral Diffie-Hellman Key
      - Editing core-site.xml
    - Requirement to Enable Insecure Protocols
- Previous Versions
  This page contains links to the documentation for releases that are currently supported or have recently reached end-of-life.
- HPE Ezmeral Data Fabric Edge
  This section contains information about HPE Ezmeral Data Fabric Edge, which is a small footprint edition of the HPE Ezmeral Data Fabric. HPE Ezmeral Data Fabric Edge is designed to capture, process, and analyze IoT data close to the source.
- Support Articles in the HPE Support Center
  Data Fabric support articles moved to the HPE Support Center in 2022, changing the way you find and access the support articles.
- Doc Site Available as a PDF
  Provides a link to the downloadable PDF file containing all the information for the current release.
- Product Licensing
  Provides information related to product licensing.
- Other Resources
  This page provides links to additional resources such as on-demand training, videos, blogs, and the HPE Ezmeral Data Fabric community.
- Contact HPE
  Provides a link to contact HPE Sales or Support.
Glossary
Definitions for commonly used terms in MapR Converged Data Platform environments.

Editing core-site.xml

About this task

With this option, you update the core-site.xml on each node with a service that runs a web server such as WebServer (Control System), ResourceManager, and HistoryServer nodes. Then, restart the services associated with the web servers. For example, you would need to restart the webserver service on the node that runs the Control System.

Procedure

Add the following configuration to the core-site.xml on each node with a service that runs a web server:

<property>
  <name>hadoop.ssl.exclude.cipher.suites</name>
  <value>
SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA,SSL_RSA_EXPORT_WITH_DES40_CBC_SHA,SSL_RSA_EXPORT_WITH_RC4_40_MD5,TLS_DHE_RSA_WITH_AES_128_CBC_SHA,TLS_DHE_RSA_WITH_AES_256_CBC_SHA,TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,TLS_DHE_DSS_WITH_AES_256_CBC_SHA256,TLS_DHE_DSS_WITH_AES_256_CBC_SHA,TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,TLS_DHE_DSS_WITH_AES_128_CBC_SHA256,TLS_DHE_DSS_WITH_AES_128_CBC_SHA
 </value>
</property>

For MapR 3.x clusters, the core-site.xml file is in the following location: /opt/mapr/hadoop/hadoop-0.20.2/conf/
For MapR 4.x and 5.x clusters, the core-site.xml file is in the following location: /opt/mapr/hadoop/hadoop-2.x.x/etc/hadoop/

Restart services associated with web servers.
For example:
- To restart the Control System webserver: maprcli node services -webserver restart -nodes <webserver nodes>
- To restart the ResourceManager service(s): maprcli node services -name resourcemanager -action restart -nodes <space delimited list of resourcemanager nodes>