Convert a MongoDB cloned server from replica set to a stand alone server

• Stop your mongodb server:

  use admin
  db.shutdownServer()

• Open /etc/mongod.conf and comment the replication.replSetName lines:

  #replication:
  #replSetName: rs0

• Start your mongo server
• Go to mongo shell and drop local database:

  use local
  db.dropDatabase()

• Restart MongoDB
• Your mongodb now is PRIMARY