GM to LM data synchronization warning alarm

Products

• VMware NSX

Issue/Introduction

Title: Alarm for GM to LM data synchronization warning
Event ID: gm_to_lm_synchronization_warning
Alarm Description:

• Purpose: Data is not getting replicated between Global Manager (GM) and Local Manager (LM).
• Impact: Any new intent created on GM will not be visible on LM.

 

Environment

VMware NSX-T Data Center

Resolution

Steps to resolve
For 3.2.0 and above

Recommended Action:

1. Check the network connectivity between remote site and local site via ping.
2. Ensure port TCP/1236 traffic is allowed between the local and remote sites.
3. Ensure the async-replicator service is running on both local and remote sites.
   • Invoke the GET /api/v1/node/services/async_replicator/status NSX API or the get service async_replicator NSX CLI command to determine if the service is running.
   • If not running, invoke the POST /api/v1/node/services/async_replicator?action=restart NSX API or the restart service async_replicator NSX CLI to restart the service.
4. Check /var/log/async-replicator/ar.log to see if there are errors reported.

Maintenance window required for remediation. No

Additional Information

If you contact support for this issue, please include the following data:

• NSX Manager Logs from all 3 Manager nodes in both the LM and GM NSX clusters.
• ESXi host logs where Manager nodes are deployed in each environment.
• vCenter server logs from the respective vSphere environments where the NSX managers are deployed.