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
  - 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

Viewing Volume Information

About this task

You can retrieve and view volume information using MCS and the CLI.

Procedure

Log in to MCS and go to the Summary tab in the Data > Volumes page.
Click the volume name in the Volumes pane.
The volume information page displays. On this page, you can edit the volume by clicking Edit Volume. In addition, for:
Standard Volume
Click the Select Action dropdown menu to:
- Remove the volume
- Change the mount path and mount or unmount the volume
- Convert the volume to a mirror volume
Mirror Volume
Click the Select Action dropdown menu to:
- Start/stop mirroring
- Remove the volume
- Promote the volume to a standard (read/write) volume
- Change volume mount information
The page displays tabs for viewing:
- Summary of the volume including:
  - All recent and active volume alarms
  - Volume disk usage
  - Volume details such as the general and auditing settings for the volume, ACLs and ACEs on the volume, and volume quotas and schedules
- Snapshots associated with the volume