MapR 5.1 is at End of Life (EOL) and no longer supported. Please see the latest documentation. This documentation is not being updated.

5.1 Reference
This section provides information about development content including MapR-FS and MapReduce development topics and reference content.
- Development Guide
- Reference Guide
  - MapR Control System
  - Hadoop Commands
  - HBase Shell for MapR-DB
    You can manage MapR-DB tables using HBase shell commands and additional HBase shell commands included in the MapR distribution of Hadoop.
  - YARN commands
  - maprcli and REST API Syntax
    - Overview
      Each command reference page includes the command syntax, a table that describes the parameters, and examples of command usage.
    - acl
      Describes the acl commands used to access control lists (ACLs).
      - acl edit
        Modifies a specific user's access to a cluster or volume.
      - acl set
        Modifies the ACL for a cluster or volume.
      - acl show
        Displays the ACL associated with an object (cluster or a volume).
    - 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 blacklist and to list blacklisted users.
    - cluster
      Manages cluster features, gateways, and cluster-wide settings.
    - config
      Manages configuration values for the MapR cluster.
    - dashboard info
      Displays a summary of information about the cluster.
    - dialhome
    - disk
      Describes command for working with disks.
    - 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 MapR-DB or file-system components that are identified by a FID.
    - job
      Manages Hadoop jobs running on the cluster.
    - license
      Manages MapR licenses.
    - nagios generate
      Generates a Nagios Object Definition file that describes the cluster nodes and the services running on each.
    - nfsmgmt
      Refreshes NFS exports and server cache.
    - node
      Manages nodes in the cluster
    - rlimit
      Manages resource usage limits for the cluster.
    - schedule
      Manages schedules.
    - 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.
    - table
      Performs functions related to MapR-DB tables.
    - task
      Manipulates information about the Hadoop jobs that are running on your cluster.
    - 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.
  - Alarms Reference
  - Utilities
  - Default MapR Configurations
  - Configuration Files
  - MapR Environment
  - MapR Parameters
  - Best Practices
  - Language Support for MapR-DB Tables
  - Glossary
    This section contains defintions for commonly used terms in MapR Converged Data Platform environments.
  - Source Code for MapR Software
- Glossary
  This section contains defintions for commonly used terms in MapR Converged Data Platform environments.

acl set

Modifies the ACL for a cluster or volume.

The acl set command specifies the entire ACL for a cluster or volume. Any previous permissions are overwritten by the new values, and any permissions omitted are removed. To use the acl set command, you must have administrative (a) permissions on the volume and cluster for which you are running the command. The permissions are specified as a comma-separated list of permission codes. See acl. You must specify either a user or a group. When the type is volume, a volume name must be specified using the name parameter.

NOTE: The acl set command removes any previous ACL values. If you wish to preserve some of the permissions, you should either use the


            acl edit

command instead of acl set, or use


            acl show

to list the values before overwriting them.

Syntax

CLI

maprcli acl set
    [ -cluster <cluster name> ]
    [ -group <group> ]
    [ -name <name> ]
    -type cluster|volume
    [ -user <user> ]

REST

http[s]://<host:port>/rest/acl/set?<parameters>

Parameters

Parameter	Description
cluster	The cluster on which to run the command.
group	Groups and allowed actions for each group. See acl. Format: `<group>:<action>[,<action>...][ <group>:<action>[,<action...]]`
name	The object name.
type	The object type (`cluster` or `volume`).
user	Users and allowed actions for each user. See acl. Format: `<user>:<action>[,<action>...][ <user>:<action>[,<action...]]`

Examples

Give the user root full control of the my.cluster.com cluster and remove all permissions for all other users:

CLI

maprcli acl set -type cluster -cluster my.cluster.com -user root:fc

REST

https://10.10.82.22:8443/rest/acl/set?type=cluster&cluster=my.cluster.com&user=root%3Afc

Usage Example

# maprcli acl show -type cluster
Principal      Allowed actions
User root      [login, ss, cv, a, fc]
User lfedotov  [login, ss, cv, a, fc]
User mapr      [login, ss, cv, a, fc]

# maprcli acl set -type cluster -cluster my.cluster.com -user root:fc
# maprcli acl show -type cluster
Principal  Allowed actions
User root  [login, ss, cv, a, fc]

WARNING: Notice that the specified permissions have overwritten the existing ACL.

Give multiple users specific permissions for the test-volume volume and remove all permissions for all other users:

CLI

maprcli acl set -type volume -name test-volume -user jsmith:dump,restore,m rjones:fc