vCenter reports alarms "vSphere DRS functionality was impacted due to unhealthy state vSphere Cluster Services caused by the unavailability of vSphere Cluster Service VMs. vSphere Cluster Service VMs are required to maintain the health of vSphere DRS".

Products

• VMware vSAN

Issue/Introduction

• vCenter displays the below alarms:

vSphere DRS functionality was impacted due to unhealthy state vSphere Cluster Services caused by the unavailability of vSphere Cluster Service VMs. vSphere Cluster Service VMs are required to maintain the health of vSphere DRS.

 

 

Environment

VMware vCenter Server 8.x

Cause

Cluster services were marked as unhealthy due to the unavailability of the vCLS VM. 

 

One of the vCLS VM was still trying to get powered ON after toggling the DRS to OFF & ON which marks the cluster services as unhealthy and triggering the vCenter alarms.

 

 

 

 

Resolution

Please wait for the vCLS VM to complete its power ON operation. Once done, the respective DRS alarms should get cleared automatically by returning the  vSphere Cluster service status to "Healthy" state.