mongo-replica-set

This image runs mongodb server in replica set mode.

Build:

docker build -t mongo-replica-set

Push:

docker push user/mongo-replica-set:tag

If you want to push the image to one of your repositories at https://hub.docker.com , replace user with your own username and set the correct tag

Usage:

docker run -d \
    --env AUTH=no \
    --env REPL_SET=rs0 \
    -v /host/path:/data/db
    mongo-replica-set

Replace /host/path with a local folder on your machine, this allows the image to use a host OS folder for the mongo files, thus making them persistent. Otherwise you may loose data when closing and opening the container

Replace rs0 to whatever you want your replica set to be named

Alternatively you can set it up via cloud.docker once you have pushed the image in one of your repositories

Once you have a few instances running, you need to connect them in the replica set. Get the IP or hostname for all the docker instances running mongo-replica-set and set them in variables for easier access

export MONGO1="meteor-mongo-1"
export MONGO2="meteor-mongo-2"
export MONGO3="meteor-mongo-3"

Note: you have to add -u admin -p $MONGODB_PATH if you are using authentication.

mongo $MONGO1 --eval "rs.initiate(); myconf = rs.conf(); myconf.members[0].host = '$MONGO1'; rs.reconfig(myconf,{force:true}); rs.add('$MONGO2'); rs.add('$MONGO3');"

Parameters

Minimum requirements

AUTH            `yes` or `no`, used to identify the need of setting up a password, for yes values, see MONGODB_PASS 
REPL_SET        a replica set name, to be later used when connecting to the mongodb

Optional parameters

MONGODB_PASS    password to be set for the mongo `admin` user, set AUTH to yes for this to work 
OPLOG_SIZE      oplog size to be set at mongodb server startup 
JOURNALING      `yes` or `no`, if set to no, mongodb will run with `--nojournal` flag
STORAGE_ENGINE  storage engine to be used by mongodb server, defaults to `wiredTiger`