#!/bin/bash

export hosts="localhost"
export new_db="ratul"
export new_user="ratul"
export new_pass="ratul"
export backup_path="/var/backups/mongobackups"

export old_db="ooop"     # existing database name which'll be migrated
sudo mkdir $backup_path

sudo sed -i 's/\(authorization:\)\(.*\)/\1 disabled/' /etc/mongod.conf

sudo systemctl restart mongodb

### create backup of database
sudo mongodump -d $old_db --out $backup_path/

### restore the backed up database to new db
sudo mongorestore -d $new_db --drop $backup_path/$old_db

mongo $new_db --eval "db.createUser({ user: '$new_user', pwd: '$new_pass', roles: [ { role: 'root', db: '$new_db' } ] });"


sudo sed -i 's/\(authorization:\)\(.*\)/\1 enabled/' /etc/mongod.conf

sudo systemctl restart mongodb