zzzsochi / docker-mongo-rs-controller

MongoDB Replica Set Controller

MongoDB Replica Set Controller

This is utility for controll MongoDB replica set.

Usage

Initiate

This command initiate a replica set on all hosts resolved by this three names:

$ mongo_rs_controller.py mongo1 mongo2 mongo3

Each hostname can resolve with many IPs with mongo.

Watching changes

$ mongo_rs_controller.py --watch mongo1 mongo2 mongo3

Docker Swarm

Create replica set on four replicas of mongo and start watcher:

$ docker network create --driver=overlay mongo
$ docker service create --network=mongo --name=mongo --replicas=4 mongo mongod --replSet=rs
$ docker service create --network=mongo --name=mongo-rs-controller --replicas=1 zzzsochi/mongo-rs-controller --watch tasks.mongo

You can add or remove replicas and controller reconfigure replica set automatically.