An easiest way to create mongodb cluster in MacOs environment.

These steps can be executed one after the other in Mac Terminal.
Note: Make sure that the folders paths are correct before running these commands.

Create Initial directories required for mongo db cluter

cd /Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data

mkdir replica1 replica2 replica3 replica4 replica5 replica6 replica7 replica8 replica9 config1 config2 config3

Sudo chmod –R 777 repl*

Sudo chmod –R 777 conf*

shard1

./mongod –dbpath=/Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data/replica1 –port=27011 –bind_ip_all –replSet=replica1 –shardsvr

./mongod –dbpath=/Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data/replica2 –port=27012 –bind_ip_all –replSet=replica1 –shardsvr

./mongod –dbpath=/Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data/replica3 –port=27013 –bind_ip_all –replSet=replica1 –shardsvr

rs.initiate({_id:”replica1″,members:[{“_id”:1,”host”:”localhost:27011″}]})

rs.add(“localhost:27012”)

rs.add(“localhost:27013”)

shard2

./mongod –dbpath=/Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data/replica4 –port=27021 –bind_ip_all –replSet=replica2 –shardsvr

./mongod –dbpath=/Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data/replica5 –port=27022 –bind_ip_all –replSet=replica2 –shardsvr

./mongod –dbpath=/Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data/replica6 –port=27023 –bind_ip_all –replSet=replica2 –shardsvr

rs.initiate({_id:”replica2″,members:[{“_id”:1,”host”:”localhost:27021″}]})

rs.add(“localhost:27022”)

rs.add(“localhost:27023”)

Shard 3

./mongod –dbpath=/Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data/replica7 –port=27031 –bind_ip_all –replSet=replica3 –shardsvr

./mongod –dbpath=/Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data/replica8 –port=27032 –bind_ip_all –replSet=replica3 –shardsvr

./mongod –dbpath=/Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data/replica9 –port=27033 –bind_ip_all –replSet=replica3 –shardsvr

rs.initiate({_id:”replica3″,members:[{“_id”:1,”host”:”localhost:27031″}]})

rs.add(“localhost:27032”)

rs.add(“localhost:27033”)

config

./mongod –dbpath=/Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data/config1 –port=27018 –bind_ip_all –replSet=config1 –configsvr

./mongod –dbpath=/Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data/config2 –port=27019 –bind_ip_all –replSet=config1 –configsvr

./mongod –dbpath=/Users/prabhu/Documents/softwares/mongodb-osx-x86_64-4.0.6/bin/data/config3 –port=27020 –bind_ip_all –replSet=config1 –configsvr

rs.initiate({_id:”config1″,members:[{“_id”:1,”host”:”localhost:27018″}]})

rs.add(“localhost:27019”)

rs.add(“localhost:27020”)

Start Mongos with config cluster
./mongos –configdb=”config1/localhost:27018,localhost:27019,localhost:27020″ –port=27017 –bind_ip_all

Connect to Mongos Server
./mongod –port 27017

sh.addShard(“replica1/localhost27011”)

sh.addShard(“replica2/localhost27021”)

sh.addShard(“replica3/localhost27031”)

sharding Collection

sh.enableSharding(“shoppingdb”); // enable sharding for db

sh.shardCollection(“shoppingdb.Orders”,{_id:1},true); // shard the collection