[Question] Some configuration entries must be set as env variables ? about hsds

[jreadey]

Hey @loichuder - yes, that's expected. There are some environment variables like ROOT_DIR that are used by ./runall.sh to determine which docker_compose file to invoke. E.g. if ROOT_DIR is set, it assumes that you want to use the posix HSDS: https://github.com/HDFGroup/hsds/blob/master/admin/docker/docker-compose.posix.yml.

Others environment variables like AWS_ACCESS_KEY_ID are not set in config.yml because that would be a security risk to have in a text file.

And finally there are some variables that are by Docker in the compose file rather than accessed by the container. E.g. "DN_RAM" sets how much memory is allotted to each DN container.

Let me know if you still have questions about this.

[loichuder]

I see.

I indeed want to use the POSIX HSDS. In this case, there is no point setting root_dir in config.yml as it will be overwritten by ROOT_DIR anyway, right ?

[jreadey]

Right - the docker-compose.posix.yml needs ROOT_DIR to set the volume mount.

[jreadey]

Closing - please re-open if you have questions.