App Control agent managed Linux OS endpoint disconnected CommStatus HTTP Error 2

Products

• Carbon Black App Control (formerly Cb Protection)

Issue/Introduction

Agent managed endpoint run the b9cli status command of:

/opt/bit9/bin/b9cli --status

Which results in:

Version information section: 
"Server Not Connected" 

Client information section:
"Server Not Connected"
"CommStatus HTTP Error 2"

Environment

App Control Linux Agent: 8.7.4.19

Cause

Network issue or server FQDN mapping not resolving

Resolution

• Re-establish proper network connectivity
• Resolve server FQDN mapping (i.e. add entry into /etc/hosts file)
• Stop and Start the agent