How do I setup a cluster with secure enabled? (Version 8)

Elastic Stack Elasticsearch
1

Hello!
When I try to connect a new to the cluster, I am only getting this message:

[WARN ][o.e.x.c.s.t.n.SecurityNetty4Transport] [node-1] client did not trust this server's certificate, closing connection Netty4TcpChannel

What is needed, to add node-2 and node-3?

Best
Edwin

2

There is far too little information for us to help you here.

How did you setup these node? What documentation are you following?

You probably want to start here: Start the Elastic Stack with security enabled | Elasticsearch Guide [8.1] | Elastic