Security and Governance Documentation Updates for HDP-2.5.0

[#1]

The Security Guide was extensively updated to reflect new Ranger and Knox features for HDP 2.5. This new content includes:

• Ranger-Atlas integration using tag-based services and policies.
• Tags and policy evaluation.
• Atlas Ranger Authorization plugin.
• Ranger-Hive row-filtering and column-masking.
• Migration script to convert from Audit-to-DB to Audit-to-Solr.
• Ranger Reports page improvements.
• Knox SSO.
• Ranger Usersync enhancements.
• Ranger High Availability (added to Apache Hadoop High Availability guide).
• Updates to reflect the new Ambari Infra Solr instance.

The Data Governance guide was completely rewritten for HDP 2.5 to reflect new Apache Atlas capabilities, along with a new Atlas UI. This new content includes:

• Atlas-Ranger integration and Tag synch.
• Installation and Configuration.
• Configuring Atlas Security.
• Configuring Atlas High Availability.
• Searching and viewing Atlas Assets.
• Working with Atlas tags.
• Enabling and Managing the Atlas Business Taxonomy (Technical Preview).
• Updated REST API resources.