EDR: Cannot Access Yum Repository to Download Update

Products

• Carbon Black EDR (formerly Cb Response)

Issue/Introduction

• Error found when trying to run "cbupgrade"

  • /centos/6/os/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 67 - "Access denied: 500" 
    Error: Cannot retrieve repository metadata (repomd.xml) for repository: base 
    

    
     

Environment

• EDR Server: All Versions

Cause

• This can occur if access to the Yum Repository is blocked by internal devices such as Firewalls or Scanners. 

Resolution

• Adjust local Firewall rules to allow access to yum.carbonblack.com:443 and yum.distro.carbonblack.io:443
• Create a repository server to establish and download updates to pull from locally.

Additional Information

The error "The requested URL returned error: 403" could also be seen