vInfrastructure Blog

Reading Time: 3 minutes The vCenter Server Security Token Service (STS) is a Web service that issues, validates, and renews security tokens. As a token issuer, the Security Token Service (STS) uses a private key to sign the tokens and publishes the public certificates for services to verify the token signature. vCenter Server manages the STS signing certificates and stores them in the VMware Directory Service (vmdir). Tokens can have a significant lifetime, and historically might have been signed by any one of multiple keys.

Reading Time: 4 minutes VMware vSphere Clustering Service (vCLS) was introduced in the vSphere 7 Update 1 release with the idea of creating a decoupled and distributed control plane for clustering services in vSphere. In the first release, a subset of DRS capabilities was using the new vCLS feature and starting with vCenter 7.0.1, VMware vSphere Distributed Resource Scheduler (vSphere DRS) cannot function if vSphere Cluster Services VMs are not present in each vSphere cluster.