MapR 5.2 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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5.2 Cluster Administration
This section contains information on administering the cluster and MapR-DB, configuring Gateways, and configuring and managing particular aspects of the MapR security infrastructure.
Configuring Security
Describes tasks for configuring MapR security, managing secure clusters, and administering auditing.
Configuring Mapr Security
Provides usage information for frequently used security functionality including Access Control Lists (ACLs), Access Control Expressions (ACEs), file permissions, and subnet whitelisting.
Managing Impersonation
Provides instructions for enabling and using MapR impersonation features.
Configuring Impersonation without Cluster Security
Describes how to use impersonation on a non-secure cluster.

MapR 5.2 Documentation

5.2 Cluster Administration
This section contains information on administering the cluster and MapR-DB, configuring Gateways, and configuring and managing particular aspects of the MapR security infrastructure.
- Administering the Cluster
  This section describes how to manage the nodes and services that make up a cluster.
- Monitoring the Cluster
  This section describes how to monitor the health and performance of a MapR cluster.
- Configuring and Managing MapR Gateways
  A MapR gateway mediates one-way communication between a source MapR cluster and a destination cluster. MapR-DB tables and MapR Streams streams can be replicated.
- Administering MapR-DB
  Administration of the MapR-DB is done primarily via the commmand 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.
- Configuring Security
  Describes tasks for configuring MapR security, managing secure clusters, and administering auditing.
  - Configuring Mapr Security
    Provides usage information for frequently used security functionality including Access Control Lists (ACLs), Access Control Expressions (ACEs), file permissions, and subnet whitelisting.
    - Getting Started with MapR Security
      Describes two core scenarios that allow quick implementation of security features.
    - Managing Encryption for MapR Core
      Provides information that allows you to use encryption across the MapR platform.
    - Authenticating Users
      Provides information about MapR ticket, Kerberos, Pluggable Authentication Module (PAM) authentication.
    - Managing Access Controls
      Describes how to create, enable, and use ACLs and ACEs.
    - Managing Impersonation
      Provides instructions for enabling and using MapR impersonation features.
      - How Impersonation Works
        Introduces impersonation functionality, limitations, and core requirements.
      - Enabling Impersonation for the MapR Superuser
        Provides a procedure necessary to implement superuser impersonation.
      - Enabling Impersonation for any User
        Provides a procedure necessary to implement impersonation for any MapR user.
      - Configuring Impersonation without Cluster Security
        Describes how to use impersonation on a non-secure cluster.
      - Resolving Username with UID and GIDs During Impersonation
        Lists configuration parameters necessary to configure impersonation.
  - Managing Secure Clusters
    Provides procedures that will enable you to run use MapR clusters securely.
  - Managing Auditing
    Provides instructions for using MapR auditing features.
- Administrator's Reference
  This section contains in-depth reference information for the administrator.
- Glossary
  This section contains defintions for commonly used terms in MapR Converged Data Platform environments.

Configuring Impersonation without Cluster Security

Describes how to use impersonation on a non-secure cluster.

About this task

To configure impersonation without enabling cluster security, perform the following procedure on the client:

Procedure

Enable impersonation for each ecosystem component you will use that supports impersonation. See Component Requirements for Impersonation in How Impersonation Works.
Enable impersonation for the MapR core components. See Enabling Impersonation for the mapr Superuser and Enabling Impersonation for any User.
On each client system from which you wish to be able to use impersonation:
1. Set a MAPR_IMPERSONATION_ENABLED environment variable with the value, true. This value must be set in the environment of any process you start that does impersonation.
2. Create a file in /opt/mapr/conf/proxy/ that has name of the mapr superuser or any other user. For the mapr superuser, the default file name would be mapr. For all other users, you can use their username for the proxy file.
If the mapr superuser has a different name in your cluster, use that name for the proxy file. To verify the mapr superuser name, check the mapr.daemon.user= line in the /opt/mapr/conf/daemon.conf file on a MapR cluster server.