Sorry, I copypasted it and forgot to change it. On the VMs the configs are identical, except for the IPs and the proper node names.
I also tried it with plain elasticsearch, without any security stuf… still not two node cluster.
Generate TLS certificates using Generate Certificates - Open Distro for Elasticsearch Documentation. It should work fine. Moreover check your cluster info and follow this link for creating a multi node elasticsearch cluster - https://logz.io/blog/elasticsearch-cluster-tutorial/
@Arp did you manage to get the nodes to connect? Is this still an open issue?