vSphere with Tanzu
The Workload Control Plane service monitors the vCenter Server rsyslog configuration by polling logs periodically. If the Workload Control Plane service detects that the remote vCenter Server rsyslog configuration is not empty, the service propagates this configuration to each control plane VM in all Supervisors. If the protocol of syslog configuration is TLS, the events from Supervisors are encrypted. The syslog server is unable to decode them.
To workload the issue:
https://<VC-IP-or-FQDN>:5480Syslog.Forwarding Configuration.ProtocolTCP or UDPSave