Moving from elasticsearch single node to cluster

[lcia-projects]

i'm pretty familiar with elasticsearch 8.. less familiar with docker. I need to build a es cluster with a t-pot hive install.
i'd like to have the tpot hive install on a fast ssd drive, but also have a couple of es nodes with larger slower spinning drives for long term storage of logs.

so.. in theory i'd like it to look something like this:

---- Main Tpot22-Hive Install on ssd drive(node 1, master data node) (hot node)
---- Elasticsearch 8 data node on ssd drive (master capable,data node 2) (hot node)
---- Elasticsearch 8 data node on large spinning disk (data node 3) (warm node)
---- Elasticsearch 8 data node on large spinning disk (data node 4) (warm node)

ILM policy to move data from hot nodes to warm nodes after 60 days.

my questions:

• is the /opt/tpot/docker/elk/docker-compose.yml and the /opt/tpot/docker/elk/elasticsearch/dist what i need to modify?
• with docker and how it does internal networking between contains and the outide world.. what do i need to open/or do to allow other virtual machines to communicate with ports 9200 and 9300 of the elasticsearch docker container? right now i think only 127.0.0.1 can do that.