Question) What hardware do we need to do a trial of  Spinnaker?

Answeer: With basic setup we can try out Spinnaker. You need a system with 24GB RAM and 10 GB hard-disk. We recommend a minimum of 4-core CPU and 50GB of disk space. Take a look at "easy Spinnaker":

https://blog.opsmx.com/spinnaker-oes-easy-install-on-single-node-kubernetes/