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.
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.
- 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 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.
  - maprcli and REST API Syntax
    This section provides information about the HPE Ezmeral 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.
    - Overview
      Each command reference page includes the command syntax, a table that describes the parameters, and examples of command usage.
    - acerole validate
      Verifies given user roles for ACEs exists in the /opt/mapr/conf/m7_permissions_roles_refimpl.conf file.
    - acl
      Describes the acl commands used to access control lists (ACLs).
    - alarm
      Describes the alarm commands that perform functions related to system alarms.
    - audit
      Describes commands used to audit operations related to cluster management and data access.
    - blacklist
      Describes commands used to include users in the denylist and to list users who are in the denylist.
    - cluster
      Manages cluster features, gateways, and cluster-wide settings.
      - cluster feature enable
        Allows features to be enabled. Used after upgrading.
      - cluster feature list
        Lists the status of features. Used after upgrading.
      - cluster gateway delete
        Deletes the list of data-fabric gateways from a source data-fabric cluster.
      - cluster gateway get
        Lists the data-fabric gateways that a source data-fabric cluster is using.
      - cluster gateway list
        Lists all of the gateways that a source data-fabric cluster is using.
      - cluster gateway local
        Lists the gateways that are configured on the data-fabric cluster where this command is run.
      - cluster gateway resolve
        Lists the gateways configured on a data-fabric cluster that are up and running at the time that the command is issued.
      - cluster gateway set
        Specifies the locations of the data-fabric gateways that a source data-fabric cluster can use for table replication to a destination data-fabric cluster, or for indexing table data in an Elasticsearch cluster.
      - cluster info
        Returns minimum and maximum values for key cluster attributes.
      - cluster mapreduce get
        Displays the cluster-wide default for the MapReduce mode.
      - cluster mapreduce set
        Sets the cluster-wide MapReduce mode.
      - cluster queryservice
        Describes the commands to enable/disable and view the settings for the OJAI Distributed Query Service.
    - config
      Lists configuration values for the data-fabric cluster.
    - dashboard info
      Displays a summary of information about the cluster.
    - dialhome
    - disk
      Lists disk parameters.
    - dump
      Returns key information about volumes, containers, storage pools, and MapR cluster services for debugging and troubleshooting.
    - entity
      Manages entities (users and groups).
    - fid
      Displays information about HPE Ezmeral Data Fabric Database or file-system components that are identified by a FID.
    - file
      Lets you perform tiering operations at the file level.
    - filefilter
      Creates and modifies filters to restrict certain file types from being stored on specified volumes.
    - job
      Manages Hadoop jobs running on the cluster.
    - license
      Manages MapR licenses.
    - label
      Manages registration and modification of labels.
    - nfsmgmt
      Refreshes NFS exports and server cache.
    - nfs4mgmt
      Manages NFSv4 server.
    - node
      Manages nodes in the cluster
    - rlimit
      Manages resource usage limits for the cluster.
    - schedule
      Manages schedules.
    - security
    - service list
      Lists all services on the specified node, the memory allocated for each service, the state of each service, and log path for each service.
    - setloglevel
      Sets log level on individual services.
    - stream
      Manages stream functionality.
    - s3domain
      Commands for managing HPE Ezmeral Object Store domains.
    - s3keys
      Commands for managing HPE Ezmeral Object Store access and secret keys.
    - table
      Performs functions related to HPE Ezmeral Data Fabric Database tables.
    - tier
      Lets you create, modify, remove, and retrieve list of tiers and tiering rules.
    - trace
      Lets you view and modify the trace buffer, and the trace levels for the system modules.
    - urls
      Displays the status page URL for the specified service.
    - virtualip
      Manages virtual IP addresses for NFS nodes.
    - volume
      Manages volumes, snapshots and mirrors.
  - MinIO Client (mc) Commands
    Lists mc commands that you can use to perform operations, such as creating and editing buckets and accounts in HPE Ezmeral 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.
  - HPE Ezmeral 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 Ezmeral Data Fabric Information
  Lists the best practices and performance considerations to follow when backing up HPE Ezmeral Data Fabric information.
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.

cluster gateway get

Lists the data-fabric gateways that a source data-fabric cluster is using.

The source data-fabric cluster might be using the data-fabric gateways either for replication of table data to a destination data-fabric cluster or for the indexing of data in an Elasticsearch cluster.

This list of gateways is created by the cluster gateway set command.

Syntax

CLI

maprcli cluster gateway get
    [ -cluster <sourceCluster> ]
    -dstcluster <destinationCluster>

REST

Request Type	GET
Request URL	`http[s]://<host>:<port>/rest/cluster/gateway/get?<parameters>`

Parameters

Parameter Description

cluster (Optional) If you are not on the source cluster, provide the name of the source cluster on which this command should run.

dstcluster

(Required) The name of the cluster on which the gateways are located.

If you are replicating table data to another data-fabric cluster, specify the name of that destination cluster. This destination cluster could be the source cluster if you are performing intra-cluster replication.

If you are indexing table data in an Elasticsearch cluster, specify the name of the source data-fabric cluster because that is where the gateways are located.

Example

Gets the list of gateways that is stored on a source data-fabric cluster. The gateways are being used for table replication and are located in the destination data-fabric cluster sfcluster.

CLI

maprcli cluster gateway get -dstcluster sfcluster

REST

curl -X GET -u <username> https://abc.sj.us:8443/rest/cluster/gateway/get?dstcluster=sfcluster

Example Output

cluster gatewayConfig 
sfcluster gw1 gw2