Error:The communication between the management function and the control function has failed on Manager node

Products

• VMware NSX

Issue/Introduction

This Alarm will be raised when messaging communication channel is down between messaging-manager and local appliance proxy hub in NSX Manager node.

Messaging-manager service is 'down': Navigate to System>Appliances and click View Details for one of the NSX Manager nodes.

 Cluster is reporting as degraded :

Check if the messaging-manager service is running via CLI:

• Access the CLI to the affected NSX Manager as admin.
• Check if the management services are running, with the command: get cluster status
• The Messaging-Manager service group would show DEGRADED for the cluster, and DOWN for the affected NSX Manager.

run the command: get service messaging-manager

• Check service status for applianceproxy service by command: get service applianceproxy

Environment

VMware NSX 4.x

Cause

This is most likely due to the messaging-manager and applianceproxy service being down on the specific node.

Resolution

Following steps can be executed for resolution:

From root access to impacted NSX manager:

1. Restart messaging manager /etc/init.d/messaging-manager restart.
2. Restart local appliance proxy hub daemon with running command /etc/init.d/nsx-applianceproxy restart.

From admin access to impacted NSX manager:

1. Restart messaging manager restart service messaging-manager
2. Restart local appliance proxy hub daemon with running command restart service applianceproxy

If you believe you have encountered this issue and need further assistance, open a support case with Broadcom Support and refer to this KB article.

For more information, see Creating and managing Broadcom support cases.