Replica Set Error Code 76

Question

In ref to mongo dba course trying to create replica set as asked shown by instructor in El Capitano (Single machine only), I get following error. I have three members:

Answer 1

Make sure you have the replSetName name configured in /etc/mongod.conf

replication:
  replSetName: "somename"

Then restart your mongod.

sudo service mongod stop
sudo service mongod start
sudo service mongod restart

Answer 2

You are not running replica set with the repl set name.The solution is to set a replication set name in the mongod config file using the paramater --replSet.

eg) --replSet=test_replica

Once changes are done in config file restart the server.