Docker mongo image always save the data inside /data/db directory

Question

I am using docker image for mongo. I changed the directory where I want to save my data inside the mongo.conf file:

dbpath=/mnt/sda1/data/db/

Also I am using docker-compose to create my development environment:

mongo:
  image: mongo
  ports:
   - 27017:27017
  volumes:
   - $HOME/Desktop/development/mongo/data/:/mnt/sda1/data/db/
   - $HOME/Desktop/mongo/config/mongod.conf:/etc/mongod.conf.orig
  command: mongod --smallfiles

When I go inside my mongo container and I check the /mnt/sda1/data/db directoy, it is empty and then go to /data/db and the data is here.

I don't understand why the data isn't inside the directory /mnt/sda1/data/db is I defined it has the dbpath for mongo configuration file.

Alexis N-o · Accepted Answer · 2015-08-27 17:23:59Z

1

Seems that you are naming the config file /etc/mongod.conf.orig inside the container. You probably should name it /etc/mongod.conf.

Also, unlike docker run, you can use relative path for the volume option in your docker-compose.yml file and don't have to use $HOME.

edited Aug 27, 2015 at 17:23

answered Aug 27, 2015 at 14:41

Alexis N-o

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2 Comments

Robert Over a year ago

My problem is about why if I changed the dbpath in mongo.conf file and share it to my docker using a volume, but the data is always saved inside /data/db when I set /mnt/sda1/data/db. How do I change this behaviour ?

Alexis N-o Over a year ago

Sorry, my guess was that the config file was not found because of an error in the volume definition. I updated the answer.

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