H2O in docker-compose - which folders to mount to persist all data?

Question

Trying to use H20 with docker-compose. Their website has instructions on running with Docker which I'm using as a basis.

I can't work out how to persist the appropriate folders to keep the models accessible in H2O Flow. Which folders do I need to persist locally for this?

I've used the Dockerfile here and the docker-compose.yaml below. I'm able to store models locally by mounting the /tmp folder, but which other folders do I need to mount?

version: '3.1'
services :
  h2o-svc:
    build:
      context: .
      dockerfile: Dockerfile
    image: h2o:latest
    restart: always
    volumes:
    - ./app/h2o_models:/tmp
    ports:
      - 54321:54321

Answer 1

H2O-3 has an in-memory architecture.

It does not write anything to disk unless you ask it to, and the location it persists to (when saving a model, for example) is the location you manually give it.

I suggest you try this without docker first, to get the hang of what to expect when H2O-3 restarts.