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

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5.1 Administration
This section contains administration information such as managing your cluster, data, users, jobs and security information such as configuring your security environment and auditing.
Security Guide
Getting Started with MapR Security
Describes the two core scenarios that allow quick implementation of security features.
Enable Impersonation
Enable Impersonation for the MapR Superuser

MapR 5.1 Documentation

5.1 Administration
This section contains administration information such as managing your cluster, data, users, jobs and security information such as configuring your security environment and auditing.
- Administrator Guide
- Security Guide
  - Security Overview
    Describes the security features of the MapR Converged Data Platform.
  - Security Architecture
    Describes the default security architecture and additional authentication and encryption capabilities.
  - Logging into a Secure Cluster
    Describes how to use tickets to access a secure MapR cluster.
  - Tickets and Certificates
    Describes how tickets and certificates authenticate users and servers to a cluster.
  - Getting Started with MapR Security
    Describes the two core scenarios that allow quick implementation of security features.
  - Configuring MapR Security
    Describes how to enable security features and configure the components on a secure cluster.
  - Auditing of Cluster Administration and Operations on Directories, Files, Tables, and Streams
    Describes how to process and use audit records to improve data analysis.

Enable Impersonation for the MapR Superuser

About this task

Follow the steps below to enable impersonation in your MapR installation.

Procedure

Open the core-site.xml file in a text editor.
Add the following to the hadoop.proxyuser properties:
```
<property>
    <name>hadoop.proxyuser.mapr.hosts</name>
    <value>*</value>
</property>
<property>
    <name>hadoop.proxyuser.mapr.groups</name>
    <value>*</value>
</property>
```
The hosts setting (*) allows the mapr superuser to impersonate any user in any group.

The groups setting (*) allows the mapr superuser to connect from any host to impersonate a user.

WARNING: Do not use anything other than a single asterisk here. Other parts of MapR ignore the values here and treat them as if each is set to a single asterisk.
Close the file after saving the changes.