Snippet for creating mongodb user

create_mongodb_user.js

// Backup
db.createUser({
  user: "bkp",
  pwd: "PASSWORD-123",
  roles: [
    { role: "readAnyDatabase", db: "admin" },
    { role: "backup", db: "admin" }
  ]
})

// Read write and admin of a database
db.createUser(
  {
    user: "robert",
    pwd: "1234566",
    roles:
      [{
        role: 'readWrite',
        db: 'database-name'
      },
      {
        role: "userAdmin",
        db: "database-name"
      }]
  })