Setup MongoDB ReplicaSet in Windows Machine

We're using the same machine for setting up the MongoDB ReplicaSet quickly, but with different port numbers.

1) Create these directories as below

mkdir D:\MongoDB\ReplicaSet

2) Start the mongod process for each replica.

mongod --bind_ip 192.168.56.1 --port 27019 --replSet rs0 --dbpath D:\MongoDB\Replicaset\data1 --oplogSize 200 --logpath D:\MongoDB\Replicaset\log1\log1.txt

mongod --bind_ip 192.168.56.1 --port 27020 --replSet rs0 --dbpath D:\MongoDB\Replicaset\data2 --oplogSize 200 --logpath D:\MongoDB\Replicaset\log2\log2.txt

mongod --bind_ip 192.168.56.1 --port 27021 --replSet rs0 --dbpath D:\MongoDB\Replicaset\data3 --oplogSize 200 --logpath D:\MongoDB\Replicaset\log3\log3.txt

--Bind_ip - is used to accept connections on a particular node. By specifying the IP address with --bind-ip, you're telling MongoDB to listen for incoming connections on that specific network interface of the node.

--replSet - to indicate the node is part of the replicaSet, but yet to configure command using rs.initiate after the processes from all the nodes started.

--OplogSize - option is used in the mongod process to specify the size of the oplog (operations log) for a replica set member. The oplog is a special capped collection that keeps a rolling record of all operations that modify the data stored in your databases. 

3) Connect to Replica 1 and set variable:

>mongosh –port 27019

Store the current configuration of ReplicaSet in a variable and check it is set correctly:

4) Execute rs.initiate(rconfig) command to start the replica set configuration process. 

>rs.initiate(rconfig)

5) Check the status of ReplicaSet after initialization

>rs.status()

6) Run db.isMaster() command to see node status

Configured a MongoDB ReplicaSet successfully!