look at the frankenstein automation gateway https://github.com/vogler75/automation-gateway that should suit your needs. i have been looking for some type of dashboard/scada for docker/kubernetes to have the posibillity to send mqtt to a plc and for opc-ua i will need a mqtt-opcua converter.. i have not had the time to dig in to it more due to some other projects taking time. As Jeremy said, it will be crucial with data-ensurance to be 100% sure that the data will arrive in the exact moment.