Review the architectural implications described for VCF 9.1.1 across AI sharing, diagnostics, VKS telemetry, identity, certificates, and EVPN. Translate release changes into validation and adoption decisions.
Quick answer: In vCenter, No Healthy Upstream means the vSphere Client front end cannot route the request to a healthy backend service. Broadcom describes it as an alternate HTTP 503 symptom, not a diagnosis. Common causes include stopped services, expired certificates, disk-space or memory pressure, session exhaustion, a changed /etc/hosts file, and Lookup Service problems. … Explore: vCenter “No Healthy Upstream”: Causes, Diagnosis, and Recovery
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