vSphere Supervisor

supports rolling upgrades through the

vSphere Automation

REST

APIs for

Supervisor

s and for the infrastructure supporting these clusters. This model ensures that there is minimal downtime for the cluster workloads during the upgrade process.

To retrieve a list of all available

vSphere Supervisor

upgrade versions for a specific

vCenter Server

system, use the Cluster Available Versions service. You can get information about the release version, name, description, release date, and release notes for each available upgrade.

You must use the Software Clusters service for upgrading a

Supervisor

. You can retrieve upgrade information about all

Supervisor

s enabled on a

vCenter Server

system by using the

GET https://

<vcenter_ip_address_or_fqdn>

/api/vcenter/namespace-management/software/clusters

HTTP request

. You receive a list of basic upgrade-related information for each cluster, such as the current software version, the date of the last successful upgrade, the upgrade status of the cluster, and so on. In case some of the clusters are in the process of upgrading, you can retrieve also information about their desired upgrade version. If you want to view a more detailed upgrade-related information about a cluster, you must use the

GET https://

<vcenter_ip_address_or_fqdn>

/api/vcenter/namespace-management/software/clusters/

<cluster_id>

HTTP request

.

After you view the details about the upgrade versions that you can apply on a single or multiple

Supervisor

s, you can create upgrade specifications that define the versions you want to upgrade to. When you upgrade a batch of

Supervisor

and for some reason one of the clusters fails to upgrade, you receive information about the pre-check exceptions that led to that cluster upgrade failure.