Start the Mogodbserver ==================== 1) mongod --replSet rs0 --port 27017 --bind_ip localhost --dbpath /srv/mongodb/rs0-0 --oplogSize 128 & 2) mongod --replSet rs0 --port 27018 --bind_ip localhost --dbpath /srv/mongodb/rs0-1 --oplogSize 128 & 3) mongod --replSet rs0 --port 27019 --bind_ip localhost --dbpath /srv/mongodb/rs0-2 --oplogSize 128 & 4) mongo --port 27017 5) rs.status() 6) conf = { _id: "rs0", members: [ {_id : 0, host : "localhost:27017"}, {_id : 1, host : "localhost:27018"}, {_i...