vSAN Host Maintenance Mode is in sync with vSAN Node Decommission State

Products

• VMware vSAN

Issue/Introduction

This article explains the health check- whether the host's maintenance mode is in sync with vSAN node decommission state.

Environment

VMware vSAN 6.x
VMware vSAN 8.x
VMware vSAN 7.x

Resolution

What does the check - Host Maintenance Mode is in sync with vSAN Node Decommission State do?

Once the vSAN host is in vSAN decommission state, it doesn't accept any new object creation, and all components on the host will be absent until it is back. When the host in the vSAN cluster is in maintenance mode, it is expected that this host is in vSAN decommission state. When the host exits maintenance mode, the host should not be in vSAN decommission state. This health check verifies the 2 states are in sync.

What does it mean when it is in an error state?

If a host is in maintenance mode using any of the vSAN options but is not in vSAN decommission state, or a host exits maintenance mode but is still in vSAN decommission state, the check triggers a warning message.

 

What action can be performed to resolve this?

If a host is decommissioned but the host is not in maintenance mode, do the following:

1. Identify the relevant host as per the Skyline Health alarm. Make sure to use the host where "vSAN Node in Decommission State" is "Yes".
2. Place the same host into maintenance mode with No Action by doing the following:
   Right-click the host > select Maintenance Mode > No Action
3. Then exit the maintenance mode right after.

This will reset the vSAN decommission status and make it consistent with the vSphere maintenance mode.