6.0 Administration
This section describes how to manage the nodes and services that make up a cluster.
- Administering Users and Clusters
- Administering Nodes
- Administering Volumes
  This section provide information about how to organize and manage data using volumes, a unique feature of MapR clusters.
  - Managing Data with Volumes
    - Viewing the List of Volumes
    - Creating a Volume
    - Viewing Volume Information
    - Removing Volumes
    - Modifying Multiple Volumes
    - Modifying a Volume
    - Specifying Volume Inheritance Using the CLI
      Lists volume properties that can be inherited from other volumes
    - Defining ACEs
    - Changing or Setting Mount Information for a Volume
    - Changing Volume Type
    - Selecting a Replication Type for High Availability
    - Setting Quota for a Volume
    - Migrating a Volume off a Node Using the CLI
    - Setting Up Volume Topology
      - Setting Up Volume Topology
      - Setting the Topology for Local Volume Replicas
      - Creating Replicas of Local Volumes in Custom Topology Using the CLI
      - Setting Default Volume Topology Using the CLI
        Use the config save command to set the default topology for volumes.
    - Viewing Active Volume Alarms
    - Working with Mirror Volumes
    - Enabling and Restricting Access to Tenant Volume and Data
    - Using Volume Links for Read and Write Operations
  - Managing Snapshots
    This section provide information about managing snapshots.
  - Managing User Disk Usage
  - Managing Schedules
- Administering Files and Directories
- Administering Tables
  Administration of the MapR-DB is done primarily via the command line (maprcli) or with the MapR Control System (MCS). Regardless of whether the MapR-DB table is used for binary files or JSON documents, the same types of commands are used with slightly different parameter options. MapR-DB administration is associated with tables, columns and column families, and table regions.
- Administering Streams
- Administering MapR Gateways
  A MapR gateway mediates one-way communication between a source MapR cluster and a destination cluster. You can replicate MapR-DB tables (binary and JSON) and MapR-ES streams. MapR 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 MapR security and manage secure clusters.
- Managing Secure Clusters
  Provides procedures that will enable you to use MapR clusters securely.
- Administering the MapR Data Access Gateway
  The MapR Data Access Gateway is a service that acts as a proxy and gateway for translating requests between lightweight client applications and the MapR 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.
- Troubleshooting Cluster Administration
- Best Practices for Backing Up MapR Information

Setting Up Volume Topology

After you define node topology for the nodes in your cluster, you can use volume topology to place volumes on specific racks, nodes, or groups of nodes.

This sections describes the process of setting up:

Default volume topology
Local volume topology
Custom topology for local volume replicas

(Topic last modified: 2018-07-18)