Your log shows that JanusGraph tries to connect to Cassandra under 127.0.0.1 which doesn’t make much sense if you are using Docker compose (and don’t use the host network).

If you are already using Docker Compose, then why don’t you try out the example Docker Compose files provided by JanusGraph first? You can start with one of that, see if you get it up and running and then you can start to change some of its config to what you need.

If you want to use Cassandra and Elasticsearch (/Opensearch), then you can simply use the docker-compose-cql-es.yml: https://github.com/JanusGraph/janusgraph-docker/blob/master/docker-compose-cql-es.yml

If you get that working, then you can for example try out to update Cassandra to version 4 and update Elasticsearch or use Opensearch instead.

In the  Janusgraph 1.0.0RC2 annoucement, it is said that "support Csssandra 4", So there should be a way to docker compose them. Is there something wrong/missing  in my code?


Thanks