Mongodb replication (secondary server) - database

Question

I set up a master-slave replication of MongoDB by using 2 servers. The problem is I always going to assign rs.slaveOk() in slave server after inserting data in master. I want to automatically synced(no need to rs.slaveOk()) in secondary! What configurations should I need to change? Thanks !
This is my rs.conf()for master-slave replication!
> rs2:PRIMARY> rs.conf() { "_id" : "rs2", "version" : 3,
> "protocolVersion" : NumberLong(1), "members" : [ { "_id" : 0,
> "host" : "192.168.56.104:27017", "arbiterOnly" : false,
> "buildIndexes" : true, "hidden" : false, "priority" : 1,
> "tags" : {
> }, "slaveDelay" : NumberLong(0), "votes" : 1 }, { "_id" : 1, "host" : "192.168.56.106:27017", "arbiterOnly" :
> false, "buildIndexes" : true, "hidden" : false, "priority" :
> 0, "tags" : {
> }, "slaveDelay" : NumberLong(0), "votes" : 1 } ], "settings" : { "chainingAllowed" : true,
> "heartbeatIntervalMillis" : 2000, "heartbeatTimeoutSecs" : 10,
> "electionTimeoutMillis" : 10000, "getLastErrorModes" : {
> }, "getLastErrorDefaults" : { "w" : 1, "wtimeout" : 0 }, "replicaSetId" : ObjectId("5a1e37704f3b7025eccaa874") } }

Answer 1

You can create a file /etc/mongorc.js and add rs.slaveOk() there. The file is being evaluated on each shell startup.
You can have a look here for more clarification.
Or, another way is to start mongo with the following command:
>mongo --port 27012 --eval "rs.slaveOk()" --shell
slaveOk() is only valid for that console session that it was executed in, so you would need to pass in a script or stay connected to the console with the --shell arguments.