create user in mongo db

create_user.commands

//login as admin using the db where the admin user is defined
mongo --port 27017 -u "admin" -p "admin" --authenticationDatabase "admin"

// or the default:
mongo --port 27017 -u "root" -p "password" --authenticationDatabase "root"

//list all system users:
db.system.users.find()


//to add a new user for a specific DB:
use cm-db
db.createUser({user: "cm-user",pwd: "cm-pass",roles: [{"role" : "dbOwner","db" : "cm-db"}]})
db.getUsers()   // should show user

use admin
db.system.users.find()   // new user should show here