Due to a recent interest in my workplace, I've been trying to connect 2 of my clusters for DR purposes, but no matter what I do, the 2 clusters will just not connect, at all.
At first, I tried connecting them by leaving the "transport.port" setting untouched, the clusters didn't connect, and the only piece of information I got was the little question mark next to the "Not connected" saying: "Ensure the seed nodes are configured with the remote cluster's transport port, not the http port"
So, I tried setting up the transport.port setting manually to 9300 at my second attempt for connecting, and a 9340 for my third attempt, both of these connection attempts prompted the same "not connected" and same message next to it as the first attempt.
For my last attempt, I tried setting the "transport.port" for a range of ports, and not a singular port, needless to say that didn't work as well.
At this point, I'm quite lost and have no clue where to go from here, and would really appreciate any kind of assistance.
For general information, I'm running both of these clusters on different datacenters located in different areas, on an on-premise network. Both clusters are running Elasticsearch 7.5.1, and from what it seems, our Firewalls aren't blocking the communication between them.
Thank you for reading , and I hope you have a great day.