Use of Argo own NATS Jetstream as Argo event source and third-party event bus

[antoinetran]

Hi,

I deployed Argo-workflows and Argo-Events with NATS Jetstream as event bus. It works fine but now I would like to:

1. put a sensor that, when receiving some event from Argo NATS (configured following https://argoproj.github.io/argo-events/eventsources/setup/nats/) , will trigger a workflow
2. have my own applications that write and reads this internal NATS.

So far I had a issue with TLS self-signed certificate, because TLS is enabled by default in Argo NATS.

My question is: (a) are we supposed to use Argo own NATS or (b) is-it a best practice to deploy another NATS Jetstream instance?
In case of (a), can we get the NATS public certificate from Kubernetes secrets?

Thank you.