如何在 ArangoDB docker 映像中指定配置文件？

Question

I'm trying to spin up an ArangoDB server via docker compose.

It all works out fine with default configuration, but I'm struggling to make the server in the container pick up a custom configuration file with minimal setup

I've tried with overriding the startup sequence with the following:

command: >
    arangod --configuration /arango.conf

I've checked and the file is present in the container, but when I check the configuration file via query through arangoshell it still references the default settings and the arangod.conf file placed in the /tmp folder.

Any hints?

Answer 1

--config /tmp/arangod.conf is hardcoded in docker-entrypoint.sh at line 185

it is also overwritten upon every start of container with /etc/arangodb3/arangod.conf at line 42

so to run arangod with your custom.conf file you need map it as volume to /etc/arangodb3/arangod.conf

via docker compose

volumes:
  /custom.conf:/etc/arangodb3/arangod.conf

via docker cli

-v /custom.conf:/etc/arangodb3/arangod.conf

---

UPDATE: as per comments

custom.conf have to contain defaults from /etc/arangodb3/arangod.conf

easiest way is to save default config to custom.conf via docker cli and add/update options in that file

docker run --rm arangodb/arangodb:3.7.5 sh -c 'cat /etc/arangodb3/arangod.conf' > custom.conf

it gonna be also required to track updates of default options in /etc/arangodb3/arangod.conf in new versions of ArangoDB and reflect them in your custom.conf