MongoDB: sync dbs from master to replica set - mongodb

Question

Step1- I have following collections in my main db [running on port 27017]
$mongo
$show dbs
show dbs
DB 0.078GB
admin (empty)
auditing
local
university
test
Step2- Now I am creating replica using below command
$mongod --dbpath ~/mongodb_data_dir/mongo/data0 --replSet auditlogreplySet --port 27018
$mongod --dbpath ~/mongodb_data_dir/mongo/data1 --replSet auditlogreplySet --port 27019
$mongod --dbpath ~/mongodb_data_dir/mongo/data2 --replSet auditlogreplySet --port 27020
Step3- running mongo for port 27018
$ mongo --port 27018
$show dbs
admin (empty)
local 0.328GB
Query: is it possible to sync all dbs from port 27017(main DB) to replica 27018? Please help. so that I can see all the dbs existing in main db in replica set.

Answer 1

As per the above post, you have just created the replica set members.
you need to add these replica members to the PRIMARY NODE first.
In main db [running on port 27017] , run the below commands :
rs.initiate(); // this command will make this NODE as PRIMARY.
// To add the secondary replica members, use the below command, run these in the same main DB shell :
rs.add (machineName:port);
// once you are done, on each of the secondary replica shell, exceute the below command
rs.slaveOk();
// once you are done, it will sync all the dbs from the primary node.