While trying to Connect my VMware Cloud Director to my Tanzu Kubernetes Grid environment (TKGS) in vSphere 7 update 2, I kept hitting a certificate error. The error presented itself during the step to configure the Kubernetes policy for my Provider VDC. After following the wizard at:

Resources ==> Cloud Resources ==> Provider VDCs ==> Kubernetes.

The Wizard goes properly till I get to the Machine Classes tab which is where VMware Cloud Director get to check on the certificate of the supervisor cluster. That when the below error present itself:

“VMware Cloud Director cannot verify the Kubernetes API endpoint certificate on this Supervisor Cluster. It might be a vSphere generated default self-signed certificate or another invalid certificates. For the steps to install your own certificate, see Change the Kubernetes API Endpoint Certificate. For trusting the certificate, see https://kb.vmware.com/s/article/80996”

The cause of the issue is the certificate structure of Tanzu Kubernetes in vCenter, The certificate of the Supervisor Cluster is not automatically trusted by VCD. Calls made to the Supervisor Cluster by VCD fail due to SSL errors. While I have this issue with VCD 10.2.2, it actually affected previous versions as well, especially when using self-signed certificates.

KB80996 article on how to fix this need to be updated with step marked in red below, but for those who needs to resolve the issue today, I wanted to document the steps in here.… Read More

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Read MoreVMware Cloud Director Cannot verify the Kubernetes API endpoint certificate on this Supervisor Cluster Error