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
Configuring MapR Security
Describes how to enable security features and configure the components on a secure cluster.
Access Control Expressions
Describes how to use ACEs to control user permissions for MapR-DB tables.
Access Control Expressions for MapR-FS
Describes how to define access to files, directories, and whole volume data using user, group, and role definitions.
File and Directory ACEs
Describes how to set permissions for files and directories.
Setting/Modifying File and Directory ACEs
Describes how to set ACEs for files and directories using maprcli commands.

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.
    - Enabling and Disabling Security Features on Your Cluster
      Describes how to enable and disable wire-level security on the nodes of your cluster.
    - Configuring Impersonation
      Describes how to use impersonation to centralize control over user actions.
    - Running Commands on Remote Secure Clusters
      Describes how to manage multiple secure clusters from one secure cluster.
    - Adding Cross-Cluster Tickets to Secure Clusters
      Describes how to add cross-cluster tickets to secure clusters that push and pull data.
    - PAM Configuration
      Describes how to use PAM to verify passwords.
    - Secured TaskTracker
      Describes how to control user access to TaskTracker.
    - Access Control Lists
      Describes how to create different types of ACLs.
    - Access Control Expressions
      Describes how to use ACEs to control user permissions for MapR-DB tables.
      - Syntax of Access Control Expressions
        Describes how to use boolean expressions to combine user, group, and role definitions.
      - Creating User Roles for Access Control Expressions
        Describes how to define user actions through roles.
      - Enabling Table Authorizations with Access Control Expressions
        Describes how to set permissions for tables.
      - Access Control Expressions for MapR-FS
        Describes how to define access to files, directories, and whole volume data using user, group, and role definitions.
        File and Directory ACEs
        Describes how to set permissions for files and directories.
        Setting/Modifying File and Directory ACEs
        Describes how to set ACEs for files and directories using maprcli commands.
        File ACE Example
        Provides instructions on how to set ACEs for files.
        Directory ACEs Example
        Provides instructions on how to set ACEs for directories.
        Deleting File and Directory ACEs
        Describes how to delete all ACEs, specific access types, and access for specific users.
        Java API
        Whole Volume ACEs
        Describes how to set permissions for volumes.
    - Permissions
      Describes requirements for API user permissions and file permissions.
    - Securing Open Source Components
      Describes how to use JAAS to configure security for open source components.
    - Configuring Kerberos User Authentication
      Describes how to configure Kerberos for the CLDB.
    - Mirror Volumes and Secure Clusters
      Describes how to configure security for the source and destination clusters of a mirror.
    - Configuring a MapR Cluster to Access a HDFS Cluster
      Describes how to create a connection between a MapR cluster and an HDFS 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.

Setting/Modifying File and Directory ACEs

Describes how to set ACEs for files and directories using maprcli commands.

For files and directories, run the hadoop mfs command to set ACEs. When ACEs are set, by default, the corresponding POSIX mode bits are also set. POSIX mode bits for owner and owning group are deduced by evaluating the corresponding ACEs. POSIX mode bits for others is set only if "p" is given as the value for an ACE.

The following table lists the POSIX mode bits that correspond to the access types.

	ACEs	POSIX Mode Bits
File	`readfile`	r
	`writefile`	w
	`executefile`	x
Directory	`readdir`	r
	`addchild`	w
	`deletechild`	w
	`lookupdir`	x

NOTE: The POSIX mode bit granting write (w) access to directory is set only if user, role, or group is granted permission for both (addchild and deletechild) access types.

The hadoop command will, by default, set the POSIX mode bits corresponding to the given ACEs, and:

Overwrite existing ACE values with new values, if specified, for access types that were previously set.
Set ACE values for access types that have not yet been set, if specified.
Not modify access types that were not specified with the command, whether they were previously set or are unset.

WARNING: Changing the POSIX mode bits using chmod will not change the corresponding ACE setting and may result in different, conflicting permissions to files and directories.