Configure App Control for use with the Citrix App Layering Integration

Products

• Carbon Black App Control (formerly Cb Protection)

Issue/Introduction

How to configure the Agent for use with Citrix App Layering Integration

Environment

• App Control Server: All Supported Versions
• App Control Agent: All Supported Versions

Resolution

Step 1: App Control Settings

1. Log in to the Console and navigate to Rules > Policies.
2. Create or verify the dedicated Policy to be used for Citrix App Layering.
3. Navigate to: https://ServerAddress/agent_config.php
4. Click Add Agent Config
   • Enable the Citrix App Layering Integration

     Property Name: Approve Citrix App Layering Files
     Host ID: 0
     Value:
     approve_files_on_unidesk_ro_volume=1
     Create for: Specific Policies that contain the Citrix VMs
     Enable and Save it 

   • Disable USN journal check - this feature can cause performance issues with the Citrix App Layering environment. New files discovered by the agent on system startup could trigger automatic Cache Consistency checks.

     Property Name: Disable USN Journal Check
     Host ID: 0
     Value:
     usn_journal_flags=0
     Create for: Specific Policies that contain the Citrix VMs
     Enable and Save it

   • Disable Volume Remediation - the GUIDs of the attached volumes changes every time the system starts. The agent will trigger automatic CC check when it detect that a new volume is attached to the system leading to performance impact.

     Property Name: Disable Volume Remediation
     Host ID: 0
     Value:
     allow_volume_remediation=1
     Create for: Specific Policies that contain the Citrix VMs
     Enable and Save it

5. Follow the steps outlined in the User Guide > Managing Virtual Machines > Creating a Template Computer.
   • IMPORTANT: Citrix App Layering uses the Template Computer feature. Do not use the Template Image feature.

Step 2: Citrix App Layering Console:

1. In the Citrix Create Template Wizard
2. Click Layered Image Disk
3. Set the following 2 configurations:
   • Elastic Layering: Application Layering
   • User Layer: None