vSAN Health Service - Unsupported host version

Products

• VMware vSAN

Issue/Introduction

The Unsupported host version check in the VMware vSAN Health Service verifies the VMware vSphere ESXi version on each host in the stretched cluster.

If this health check is not green (OK), the vSAN stretched cluster has configuration errors that affect its operation.

Environment

VMware vSAN 6.0.x
VMware vSAN 6.2.x
VMware vSAN 6.1.x

Resolution

The vSAN stretched cluster is a new feature introduced in vSphere 6.0 Update 1. An ESXi host running an earlier version does not form a stretched cluster properly. This check verifies that all hosts in the data sites are running vSphere 6.0 Update 1 or newer version.

Additional Information

To view the list of ESXi hosts, run the esxcli vsan cluster get command. If you run the command on the witness host, the local node type appears as WITNESS.

For example:

[root@:~] esxcli vsan cluster get
Cluster Information
Enabled: true
Current Local Time: 2015-06-25T23:52:26Z
Local Node UUID: 558c3ca0-####-####-####-########d0e
Local Node Type: WITNESS
Local Node State: AGENT
Local Node Health State: HEALTHY
Sub-Cluster Master UUID: 558c3ca0-####-####-####-########7e7
Sub-Cluster Backup UUID: 558c3ca0-####-####-####-########e57
Sub-Cluster UUID: 526a9252-####-####-####-########1bb
Sub-Cluster Membership Entry Revision: 2
Sub-Cluster Member Count: 3
Sub-Cluster Member UUIDs: 558c3ca0-####-####-####-########7e7, 558c3ca0-####-####-####-########d0e, 558c3ca0-####-####-####-########e57
Sub-Cluster Membership UUID: 90418c55-####-####-####-########7e7

You can collect the list of node information and preferred fault domain by querying CMMDS from a host.

For example:

[root@:~] cmmds-tool find -t NODE

owner=00000000-0000-0000-0000-000000000000(Health: Healthy) uuid=558c3ca0-####-####-####-########e57 type=NODE rev=0 minHostVer=0 [content = (i2 i1 i0 i1 i0)], errorStr=(null)

owner=00000000-0000-0000-0000-000000000000(Health: Healthy) uuid=558c3ca0-####-####-####-########7e7 type=NODE rev=0 minHostVer=0 [content = (i2 i1 i0 i1 i0)], errorStr=(null)

owner=00000000-0000-0000-0000-000000000000(Health: Healthy) uuid=558c3ca0-####-####-####-########d0e type=NODE rev=0 minHostVer=0 [content = (i2 i1 i3 i1 i0)], errorStr=(null)