sentry

Apache Sentry Puppet Module

Table of Contents

1. Overview
2. Module Description - What the module does and why it is useful
3. Setup - The basics of getting started with sentry
   • What sentry affects
   • Setup requirements
   • Beginning with sentry
4. Usage - Configuration options and additional functionality
   • Basic Usage
   • Sentry with MySQL
   • Sentry with PostgreSQL
5. Reference - An under-the-hood peek at what the module is doing and how
   • Module parameters (spark class)
6. Development - Guide for contributing to the module

Module Description

This puppet module installs and setup Apache Sentry - system for enforcing fine grained role based authorization to data and metadata stored on a Hadoop cluster.

Setup

What sentry affects

• Alternatives:
• sentry-conf
• Files:
• /etc/sentry/conf/sentry-site.xml
• JDBC jars in /usr/lib/sentry/lib (if needed)
• startup skript: workaround for packaging error (tested with Cloudera CDH 5.4.7)
• Packages: sentry, sentry-store
• Services: sentry-store

Setup Requirements

• repositories set
• Java JRE installed
• Hadoop cluster with enabled Kerberos security
• for Hive: security enabled (Hive Server 2: LDAP or Kerberos, Hive Metastore: Kerberos)
• for Impala: security enabled (Kerberos or LDAP)

Usage

Basic usage

include ::sentry
include ::sentry::client
include ::sentry::server

Sentry with MySQL

class{'::sentry':
  db          => 'mysql',
  db_password => 'sentrypassword',
}

node default {
  include ::sentry::client
  include ::sentry::server

  class { 'mysql::server':
    root_password  => 'strongpassword',
  }

  mysql::db { 'sentry':
    user     => 'sentry',
    password => 'sentrypassword',
    host     => 'localhost',
    grant    => ['ALTER', 'CREATE', 'SELECT', 'INSERT', 'UPDATE', 'DELETE'],
  }

  class { 'mysql::bindings':
    java_enable => true,
  }

  Mysql::Db['sentry'] -> Class['::sentry::server::config']
  Class['mysql::bindings'] -> Class['::sentry::server::config']
}

Sentry with PostgreSQL

class{'::sentry':
  db          => 'postgresql',
  db_password => 'sentrypassword',
}

node default {
  include ::sentry::client
  include ::sentry::server

  class { 'postgresql::server':
    postgres_password  => 'strongpassword',
  }

  postgresql::server::db { 'sentry':
    user     => 'sentry',
    password => postgresql_password('sentry', 'sentrypassword'),
  }

  include postgresql::lib::java

  Postgresql::Server::Db['sentry'] -> Class['::sentry::server::config']
  Class['postgresql::lib::java'] -> Class['::sentry::server::config']
}

Reference

• sentry: Apache Sentry setup
• sentry::client: Sentry client
• sentry::server: Sentry store

sentry class

Apache Sentry Setup.

####alternatives

Switches the alternatives used for the configuration. Default: 'cluster' (Debian) or undef.

Use it only when supported (for example with Cloudera distribution).

####admin_groups

List of groups allowed to make policy updates. Default: ['sentry'].

####db

Database for the sentry store service. Default: undef.

The default is embedded database (derby).

Values:

• derby: embedded database
• mysql: MySQL/MariaDB,
• postgresql: PostgreSQL
• oracle: Oracle

####db_host

Database hostname for mysql, postgresql, and oracle. Default: 'localhost'.

It can be overridden by sentry.store.jdbc.url property.

####db_name

Database name for mysql and postgresql. Default: 'sentry'.

For oracle 'xe' schema is used. Can be overridden by sentry.store.jdbc.url property.

####db_user

Database user for mysql, postgresql, and oracle. Default: 'sentry'.

It can be overridden by sentry.store.jdbc.user property.

####db_password

Database password for mysql, postgresql, and oracle. Default: undef.

It can be overriden by sentry.store.jdbc.password property.

####keytab

Keytab file for Sentry. Default: '/etc/security/keytab/sentry.service.keytab'.

This will set also property sentry.service.server.keytab, if not specified directly.

####properties

Additional properties for sentry. Default: undef.

"::undef" property value will remove given property set automatically by this module, empty string sets the empty value.

####realm

Enables security. Default: undef.

The value is the Kerberos realm to use.

With security there is required:

• /etc/security/keytab/sentry.service.keytab (according to the keytab parameter)

##Development

• Repository: https://github.com/MetaCenterCloudPuppet/cesnet-sentry
• Tests:
• basic: see .travis.yml
• Email: František Dvořák <valtri@civ.zcu.cz>

See https://github.com/MetaCenterCloudPuppet/cesnet-sentry/commits/master.