MONGO REPLICA SET WITH AUTHENTICATION USING DOCKER

Mongo Cluster Using 4 Nodes

Run The Cluster:

docker-compose up

Connect To The Primary Node

docker-compose exec Mongo-Primary mongo -u "example" -p "password123"

Initiate The Replica Set

rs.initiate({"_id" : "Set-Name","members" : [{"_id" : 0,"host" : "Mongo-Primary:27017"},{"_id" : 1,"host" : "Mongo-1:27018"},{"_id" : 2,"host" : "Mongo-2:27019"},{"_id" : 3,"host" : "Mongo-3:27020"}]});

Set The Priority Of The Master Node

conf = rs.config();
conf.members[0].priority = 2;
rs.reconfig(conf);

Create a Cluster Admin

use admin;
db.createUser({user: "cluster_admin",pwd: "password",roles: [ { role: "userAdminAnyDatabase", db: "admin" },  { "role" : "clusterAdmin", "db" : "admin" } ]});
db.auth("cluster_admin", "password");

Create a Collection On the Database

use my_data;
db.createUser({user: "my_user",pwd: "password",roles: [ { role: "readWrite", db: "my_data" } ]});
db.createCollection('my_collection');

Verify Credentials

docker-compose exec tut12-mongo-primary mongo -u "my_user" -p "password" --authenticationDatabase "my_data"

Stop The Cluster

docker-compose down