Anything in Elastic? Can you add logs of the startup of the apiserver?

This issue will most certainly will only be related to mongodb. Can you verify there are no errors in the logs and that the mounts are correct?

there is only one suspicious thing that elastic connects on second try

Here is mongo's compose

mongo:
    networks:
      - backend
    container_name: clearml-mongo
    image: mongo:4.4.29
    restart: unless-stopped
    command: --setParameter internalQueryMaxBlockingSortMemoryUsageBytes=196100200 --port 27018
    volumes:
    - /opt/clearml/data/mongo_4/db:/data/db
    - /opt/clearml/data/mongo_4/configdb:/data/configdb
    ports:
    - "27018:27018"

Mongo is working, at least i'm able to connect by my self.

Hi @<1693795218895147008:profile|FlatMole2> , is it possible that the apiserver.conf file isn't persistent and somehow changes?

Do you see anything strange in the apiserver logs when restarting the server?

I think it is not possible

Elastic seems to be ok too