LogoLogo
2024.3
  • Immuta Documentation - 2024.3
  • What is Immuta?
  • Self-Managed Deployment
    • Requirements
    • Install
      • Managed Public Cloud
      • Red Hat OpenShift
    • Upgrade
      • Migrating to the New Helm Chart
      • Upgrading (IEHC)
      • Upgrading (IHC)
    • Guides
      • Ingress Configuration
      • TLS Configuration
      • Cosign Verification
      • Production Best Practices
      • Rotating Credentials
      • External Cache Configuration
      • Enabling Legacy Query Engine and Fingerprint
      • Private Container Registries
      • Air-Gapped Environments
    • Disaster Recovery
    • Troubleshooting
    • Conventions
  • Integrations
    • Immuta Integrations
    • Snowflake
      • Getting Started
      • How-to Guides
        • Configure a Snowflake Integration
        • Snowflake Table Grants Migration
        • Edit or Remove Your Snowflake Integration
        • Integration Settings
          • Enable Snowflake Table Grants
          • Use Snowflake Data Sharing with Immuta
          • Configure Snowflake Lineage Tag Propagation
          • Enable Snowflake Low Row Access Policy Mode
            • Upgrade Snowflake Low Row Access Policy Mode
      • Reference Guides
        • Snowflake Integration
        • Snowflake Data Sharing
        • Snowflake Lineage Tag Propagation
        • Snowflake Low Row Access Policy Mode
        • Snowflake Table Grants
        • Warehouse Sizing Recommendations
      • Phased Snowflake Onboarding Concept Guide
    • Databricks Unity Catalog
      • Getting Started
      • How-to Guides
        • Configure a Databricks Unity Catalog Integration
        • Migrate to Unity Catalog
      • Databricks Unity Catalog Integration Reference Guide
    • Databricks Spark
      • How-to Guides
        • Configuration
          • Simplified Databricks Spark Configuration
          • Manual Databricks Spark Configuration
          • Manually Update Your Databricks Cluster
          • Install a Trusted Library
        • DBFS Access
        • Limited Enforcement in Databricks Spark
        • Hide the Immuta Database in Databricks
        • Run spark-submit Jobs on Databricks
        • Configure Project UDFs Cache Settings
        • External Metastores
      • Reference Guides
        • Databricks Spark Integration
        • Databricks Spark Pre-Configuration Details
        • Configuration Settings
          • Databricks Spark Cluster Policies
            • Python & SQL
            • Python & SQL & R
            • Python & SQL & R with Library Support
            • Scala
            • Sparklyr
          • Environment Variables
          • Ephemeral Overrides
          • Py4j Security Error
          • Scala Cluster Security Details
          • Databricks Security Configuration for Performance
        • Databricks Change Data Feed
        • Databricks Libraries Introduction
        • Delta Lake API
        • Spark Direct File Reads
        • Databricks Metastore Magic
    • Starburst (Trino)
      • Getting Started
      • How-to Guides
        • Configure Starburst (Trino) Integration
        • Customize Read and Write Access Policies for Starburst (Trino)
      • Starburst (Trino) Integration Reference Guide
    • Redshift
      • Getting Started
      • How-to Guides
        • Configure Redshift Integration
        • Configure Redshift Spectrum
      • Reference Guides
        • Redshift Integration
        • Redshift Pre-Configuration Details
    • Azure Synapse Analytics
      • Getting Started
      • Configure Azure Synapse Analytics Integration
      • Reference Guides
        • Azure Synapse Analytics Integration
        • Azure Synapse Analytics Pre-Configuration Details
    • Amazon S3
    • Google BigQuery
    • Legacy Integrations
      • Securing Hive and Impala Without Sentry
      • Enabling ImmutaGroupsMapping
    • Catalogs
      • Getting Started with External Catalogs
      • Configure an External Catalog
      • Reference Guides
        • External Catalogs
        • Custom REST Catalogs
          • Custom REST Catalog Interface Endpoints
  • Data
    • Registering Metadata
      • Data Sources in Immuta
      • Register Data Sources
        • Create a Data Source
        • Create an Amazon S3 Data Source
        • Create a Google BigQuery Data Source
        • Bulk Create Snowflake Data Sources
      • Data Source Settings
        • How-to Guides
          • Manage Data Sources and Data Source Settings
          • Manage Data Source Members
          • Manage Access Requests and Tasks
          • Manage Data Dictionary Descriptions
          • Disable Immuta from Sampling Raw Data
        • Data Source Health Checks Reference Guide
      • Schema Monitoring
        • How-to Guides
          • Run Schema Monitoring and Column Detection Jobs
          • Manage Schema Monitoring
        • Reference Guides
          • Schema Monitoring
          • Schema Projects
        • Why Use Schema Monitoring?
    • Domains
      • Getting Started with Domains
      • Domains Reference Guide
    • Tags
      • How-to Guides
        • Create and Manage Tags
        • Add Tags to Data Sources and Projects
      • Tags Reference Guide
  • People
    • Getting Started
    • Identity Managers (IAMs)
      • How-to Guides
        • Okta LDAP Interface
        • OpenID Connect
          • OpenID Connect Protocol
          • Okta and OpenID Connect
          • OneLogin with OpenID
        • SAML
          • SAML Protocol
          • Microsoft Entra ID
          • Okta SAML SCIM
      • Reference Guides
        • Identity Managers
        • SAML Single Logout
        • SAML Protocol Configuration Options
    • Immuta Users
      • How-to Guides
        • Managing Personas and Permissions
        • Manage Attributes and Groups
        • User Impersonation
        • External User ID Mapping
        • External User Info Endpoint
      • Reference Guides
        • Attributes and Groups in Immuta
        • Permissions and Personas
  • Discover Your Data
    • Getting Started with Discover
    • Introduction
    • Data Discovery
      • How-to Guides
        • Enable Sensitive Data Discovery (SDD)
        • Manage Identification Frameworks
        • Manage Identifiers
        • Run and Manage SDD on Data Sources
        • Manage Sensitive Data Discovery Settings
        • Migrate From Legacy to Native SDD
      • Reference Guides
        • How Competitive Criteria Analysis Works
        • Built-in Identifier Reference
        • Built-in Discovered Tags Reference
    • Data Classification
      • How-to Guides
        • Activate Classification Frameworks
        • Adjust Identification and Classification Framework Tags
        • How to Use a Built-In Classification Framework with Your Own Tags
      • Built-in Classification Frameworks Reference Guide
  • Detect Your Activity
    • Getting Started with Detect
      • Monitor and Secure Sensitive Data Platform Query Activity
        • User Identity Best Practices
        • Integration Architecture
        • Snowflake Roles Best Practices
        • Register Data Sources
        • Automate Entity and Sensitivity Discovery
        • Detect with Discover: Onboarding Guide
        • Using Immuta Detect
      • General Immuta Configuration
        • User Identity Best Practices
        • Integration Architecture
        • Databricks Roles Best Practices
        • Register Data Sources
    • Introduction
    • Audit
      • How-to Guides
        • Export Audit Logs to S3
        • Export Audit Logs to ADLS
        • Run Governance Reports
      • Reference Guides
        • Universal Audit Model (UAM)
          • UAM Schema
        • Query Audit Logs
          • Snowflake Query Audit Logs
          • Databricks Unity Catalog Query Audit Logs
          • Databricks Spark Query Audit Logs
          • Starburst (Trino) Query Audit Logs
        • Audit Export GraphQL Reference Guide
        • Governance Report Types
        • Unknown Users in Audit Logs
      • Deprecated Audit Guides
        • Legacy to UAM Migration
        • Download Audit Logs
        • System Audit Logs
    • Dashboards
      • Use the Detect Dashboards How-To Guide
      • Detect Dashboards Reference Guide
    • Monitors
      • Manage Monitors and Observations
      • Detect Monitors Reference Guide
  • Secure Your Data
    • Getting Started with Secure
      • Automate Data Access Control Decisions
        • The Two Paths: Orchestrated RBAC and ABAC
        • Managing User Metadata
        • Managing Data Metadata
        • Author Policy
        • Test and Deploy Policy
      • Compliantly Open More Sensitive Data for ML and Analytics
        • Managing User Metadata
        • Managing Data Metadata
        • Author Policy
      • Federated Governance for Data Mesh and Self-Serve Data Access
        • Defining Domains
        • Managing Data Products
        • Managing Data Metadata
        • Apply Federated Governance
        • Discover and Subscribe to Data Products
    • Introduction
      • Scalability and Evolvability
      • Understandability
      • Distributed Stewardship
      • Consistency
      • Availability of Data
    • Authoring Policies in Secure
      • Authoring Policies at Scale
      • Data Engineering with Limited Policy Downtime
      • Subscription Policies
        • How-to Guides
          • Author a Subscription Policy
          • Author an ABAC Subscription Policy
          • Subscription Policies Advanced DSL Guide
          • Author a Restricted Subscription Policy
          • Clone, Activate, or Stage a Global Policy
        • Reference Guides
          • Subscription Policies
          • Subscription Policy Access Types
          • Advanced Use of Special Functions
      • Data Policies
        • Overview
        • How-to Guides
          • Author a Masking Data Policy
          • Author a Minimization Policy
          • Author a Purpose-Based Restriction Policy
          • Author a Restricted Data Policy
          • Author a Row-Level Policy
          • Author a Time-Based Restriction Policy
          • Certifications Exemptions and Diffs
          • External Masking Interface
        • Reference Guides
          • Data Policy Types
          • Masking Policies
          • Row-Level Policies
          • Custom WHERE Clause Functions
          • Data Policy Conflicts and Fallback
          • Custom Data Policy Certifications
          • Orchestrated Masking Policies
    • Projects and Purpose-Based Access Control
      • Projects and Purpose Controls
        • Getting Started
        • How-to Guides
          • Create a Project
          • Create and Manage Purposes
          • Adjust a Policy
          • Project Management
            • Manage Projects and Project Settings
            • Manage Project Data Sources
            • Manage Project Members
        • Reference Guides
          • Projects and Purposes
          • Policy Adjustments
        • Why Use Purposes?
      • Equalized Access
        • Manage Project Equalization
        • Project Equalization Reference Guide
        • Why Use Project Equalization?
      • Masked Joins
        • Enable Masked Joins
        • Why Use Masked Joins?
      • Writing to Projects
        • How-to Guides
          • Create and Manage Snowflake Project Workspaces
          • Create and Manage Databricks Spark Project Workspaces
          • Write Data to the Workspace
        • Reference Guides
          • Project Workspaces
          • Project UDFs (Databricks)
    • Data Consumers
      • Subscribe to a Data Source
      • Query Data
        • Querying Snowflake Data
        • Querying Databricks Data
        • Querying Databricks SQL Data
        • Querying Starburst (Trino) Data
        • Querying Redshift Data
        • Querying Azure Synapse Analytics Data
      • Subscribe to Projects
  • Application Settings
    • How-to Guides
      • App Settings
      • BI Tools
        • BI Tool Configuration Recommendations
        • Power BI Configuration Example
        • Tableau Configuration Example
      • Add a License Key
      • Add ODBC Drivers
      • Manage Encryption Keys
      • System Status Bundle
    • Reference Guides
      • Data Processing, Encryption, and Masking Practices
      • Metadata Ingestion
  • Releases
    • Immuta v2024.3 Release Notes
    • Immuta Release Lifecycle
    • Immuta LTS Changelog
    • Immuta Support Matrix Overview
    • Immuta CLI Release Notes
    • Immuta Image Digests
    • Preview Features
      • Features in Preview
    • Deprecations
  • Developer Guides
    • The Immuta CLI
      • Install and Configure the Immuta CLI
      • Manage Your Immuta Tenant
      • Manage Data Sources
      • Manage Sensitive Data Discovery
        • Manage Sensitive Data Discovery Rules
        • Manage Identification Frameworks
        • Run Sensitive Data Discovery on Data Sources
      • Manage Policies
      • Manage Projects
      • Manage Purposes
      • Manage Audit
    • The Immuta API
      • Integrations API
        • Getting Started
        • How-to Guides
          • Configure an Amazon S3 Integration
          • Configure an Azure Synapse Analytics Integration
          • Configure a Databricks Unity Catalog Integration
          • Configure a Google BigQuery Integration
          • Configure a Redshift Integration
          • Configure a Snowflake Integration
          • Configure a Starburst (Trino) Integration
        • Reference Guides
          • Integrations API Endpoints
          • Integration Configuration Payload
          • Response Schema
          • HTTP Status Codes and Error Messages
      • Immuta V2 API
        • Data Source Payload Attribute Details
        • Data Source Request Payload Examples
        • Create Policies API Examples
        • Create Projects API Examples
        • Create Purposes API Examples
      • Immuta V1 API
        • Authenticate with the API
        • Configure Your Instance of Immuta
          • Get Fingerprint Status
          • Get Job Status
          • Manage Frameworks
          • Manage IAMs
          • Manage Licenses
          • Manage Notifications
          • Manage Sensitive Data Discovery (SDD)
          • Manage Tags
          • Manage Webhooks
          • Search Filters
        • Connect Your Data
          • Create and Manage an Amazon S3 Data Source
          • Create an Azure Synapse Analytics Data Source
          • Create an Azure Blob Storage Data Source
          • Create a Databricks Data Source
          • Create a Presto Data Source
          • Create a Redshift Data Source
          • Create a Snowflake Data Source
          • Create a Starburst (Trino) Data Source
          • Manage the Data Dictionary
        • Manage Data Access
          • Manage Access Requests
          • Manage Data and Subscription Policies
          • Manage Domains
          • Manage Write Policies
            • Write Policies Payloads and Response Schema Reference Guide
          • Policy Handler Objects
          • Search Audit Logs
          • Search Connection Strings
          • Search for Organizations
          • Search Schemas
        • Subscribe to and Manage Data Sources
        • Manage Projects and Purposes
          • Manage Projects
          • Manage Purposes
        • Generate Governance Reports
Powered by GitBook

Other versions

  • SaaS
  • 2024.3
  • 2024.2

Copyright © 2014-2024 Immuta Inc. All rights reserved.

On this page
  • Introduction
  • Group Naming
  • Configuration Prerequisites
  • Check the Existing Group Mapping Service
  • Configuration to Add
  • Configuration Snippet
  • Caching Considerations

Was this helpful?

Export as PDF
  1. Integrations
  2. Legacy Integrations

Enabling ImmutaGroupsMapping

Last updated 3 months ago

Was this helpful?

Introduction

Hadoop has the concept of a , which is a way to retrieve groups corresponding to a provided user/Kerberos principal. By default, Hadoop services (HDFS, Hive, Impala, etc.) will retrieve a user's groups from the local OS by way of the ShellBasedUnixGroupsMapping class.

With Immuta, this data can be enriched to include the user's current project. This can be helpful for systems where current project information could help provide access to data. For example, in Impala it is possible to GRANT access to a database or tables based on a user's membership in an Immuta project group. This way a user could read information from tables only when acting in the target project.

Group Naming

Immuta project group names are simply immuta_project_<project_id> where project_id is just the Immuta project's ID.

Configuration Prerequisites

  • In Impala it is important that the auth_to_local setting is enabled in order to map Kerberos principals to short usernames in order to properly retrieve groups from Immuta for the corresponding principal. For example, Impala should map bob/my.host.name@REALM to bob in order to properly map bob to the corresponding Immuta user account to determine the current project group (if any) for bob.

  • If Immuta HDFS Workspaces are being created on the target cluster, then the Immuta Partition Service principal needs to be a Sentry Admin user in order to CREATE databases and roles for use by Immuta.

  • If administrators want to allow users to CREATE non-data-source tables in the workspace database, the immuta.workspace.allow.create.table configuration option must be set to true for the Partition Service in generator.xml. It is also recommended that Sentry Object Ownership is enabled and set to ALL in this scenario, which allows users to DROP their own tables. If Object Ownership is not enabled, users will not be able to DROP tables and a Sentry Admin would need to clean up old tables.

  • For Hive, it is required that the ImmutaGroupsMapping service jar is added to the classpath for YARN applications. This can be done by updating the yarn.application.classpath configuration value in yarn-site.xml. In Cloudera manager the value /opt/cloudera/parcels/IMMUTA/lib/immuta-group-mapping.jar should be added under YARN Application Classpath in Yarn's Cloudera Manager configuration page. Note that if you are using a non-standard parcel directory, you should replace /opt/cloudera/parcels/ with your custom directory.

Check the Existing Group Mapping Service

It's a good idea to start by checking the existing Group Mapping Service in the configuration item hadoop.security.group.mapping. If this is not found in your configuration, the default is org.apache.hadoop.security.JniBasedUnixGroupsMappingWithFallback.

To use ImmutaGroupsMapping alongside another Group Mapping Service, there is an implementation called org.apache.hadoop.security.CompositeGroupsMapping. This Group Mapping Service takes the results of multiple Group Mapping Services and combines them. If CompositeGroupsMapping is already being used before adding ImmutaGroupsMapping, simply add ImmutaGroupsMapping as another provider in configuration. This will be detailed below.

Configuration to Add

To enable the ImmutaGroupsMapping, the following configuration needs to be added to Hadoop XML configuration for any target systems where the groups mapping should be applied.

  • If this should be applied across the cluster it should be added to the system-wide core-site.xml file.

  • If it is only being applied to a single system (Impala for instance), then it should be added to an XML file specifically for Impala.

Best practice

The group mapping service should be applied only to target systems requiring Immuta project groups to be determined for context-aware permissions. This can typically be limited to Hive and/or Impala. In Cloudera Manager this configuration can be added to Impala Daemon Advanced Configuration Snippet (Safety Valve) for core-site.xml and/or Hive Service Advanced Configuration Snippet (Safety Valve) for core-site.xml.

Configuration Snippet

The following configuration shows the ImmutaGroupsMapping provider being used alongside the JniBasedUnixGroupsMappingWithFallback provider.

<property>
  <name>hadoop.security.group.mapping</name>
  <value>org.apache.hadoop.security.CompositeGroupsMapping</value>
  <final>true</final>
</property>

<property>
  <name>hadoop.security.group.mapping.providers</name>
  <value>jni,immuta</value>
  <final>true</final>
</property>

<property>
  <name>hadoop.security.group.mapping.providers.combined</name>
  <value>true</value>
  <description>Set to true if the results of all mapping services should be concatenated.</description>
  <final>true</final>
</property>

<property>
  <name>hadoop.security.group.mapping.provider.jni</name>
  <value>org.apache.hadoop.security.JniBasedUnixGroupsMappingWithFallback</value>
  <final>true</final>
</property>

<property>
  <name>hadoop.security.group.mapping.provider.immuta</name>
  <value>com.immuta.security.ImmutaGroupsMapping</value>
  <final>true</final>
</property>

Critical

If the group mapping service is being configured for a specific service (i.e., Hive or Impala), it is critical that immuta.system.api.key is also configured for that target service. The ImmutaGroupsMapping provider requires the system API key in order to retrieve user group details. Add something like the following to the properties defined above.

<property>
  <name>immuta.system.api.key</name>
  <value>mYIUy6REcWrnW1mtVjZpuZiyyRFVj3</value>
  <final>true</final>
</property>

Caching Considerations

By default, Hadoop's group services cache the retrieved groups for 5 minutes. This may not be desirable for Immuta deployments using group mapping because switching project contexts would then take up to 5 minutes to have an effect on the cluster. In order to lower this cache time, add the following configuration to the same file as above:

<property>
  <name>hadoop.security.groups.cache.secs</name>
  <value>10</value>
  <description>Set to whatever value is most tolerable for the delay in group change for a user.</description>
</property>
Group Mapping Service